Two Peas In A Podcast
Your weekly dose of nutrition news from OnCore Nutrition.
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What makes something worth reading?
- Types of studies – epidemiological, vs clinical trial etc..
To really understand a study you need to read more than just the abstract. The abstract is a great introduction however doesn’t give us enough context or information.
Each of the different studies have their own strengths and weaknesses.
- Evidence Summaries (Systematic Reviews and Meta-analysis)
- Experimental studies (RCT’s and non-RCT’s)
- Observational studies (case control, case report, cohort study)
CASP (and other critical appraisal) tools
- Type of study – RCT vs cohort/observational vs systematic review vs case control. In vitro (test tube) vs in vivo, Animal vs human
- Randomized, double-blind, placebo-controlled trials = gold standard
- Aims and study qn
- How were subject recruited?
- Randomisation and blinding
- Population size + power of the findings – the bigger the sample size, the more reliable the study is.
- Demographics – age, sex, health status – this will help you indetify if the paper is relevant to you or your client group. No point in drawing inferences from a paper which looks at muscle mass in an elderly population group if the group you work with are <30 years old.
- Confounder – a factor that may influence the results. E.g. if you’re looking at Vitamin C levels and immune function, you would want to ensure the group you’re looking at aren’t already on supplements while the others aren’t on anything. These people should be excluded from the study as they may influence the results.
- If not RCT, measures to minimise bias? Observer and subject bias. Social conformity.
- What methods were used? The methods section should have a clear endpoint – we want to clearly know what the researchers are trying to find – e.g. effect of the keto diet on weight loss or resistance training on muscle gain.
- Similarity of the groups at baseline – heterogeneous sample size
- Did anything else differ between groups other than the intervention?
- Size of the effect – clinical vs statistical significance. This can be confusing for the general population. E.g. we may see improvements in clinical outcomes when looking at nutrition interventions prior to cancer surgery, however the results were not ‘statistically significant’.
- P-value (probability of obtaining the observed results of a test)
- How long was the intervention or follow up? E.g. 6/12 for weight loss – perhaps not long enough! What happens in 5 years?
- Consistency with other high quality evidence
- Application of results to local population or groups
- Harms and costs
- COI – often mentioned at the end of the pape
What to do when you’re not sure if something is being honest or true: Fight back against the click bait.
- Warning signs
- Selling something – food or supplement companies often cherry pick information – be aware of this!
- Lack of credentials
- Lack of references – skeptical even if accurate
- Promise to cure / prevent
Is loaded with ‘testimonials’ (did you know that registered health professionals is Australia aren’t allowed to include
testimonials? This is because we base our advice on best-practice evidence rather than individual cases. What works for Sam won’t necessarily be right for Sally!)
- Makes no mention of seeking individual advice
- If it sounds too good to be true, it probably is!
- How to cross check when you’re not sure.
- The best advice? Check anything you’re interested in trying, taking, applying with your training, governed health care professionals. And if you don’t get an answer from one, as, another!
- If you’re game, read a number of studies on the same topic
Three applied examples
- Vitamin E (almonds, peanuts, hazelnuts, sunflower seeds, avocado) and Beta Carotene (sweet potato, dark leafy greens, cantelope, capsicum) are often studied as it is hypothesized that these antioxidants can prevent the accumulation of atherosclerotic plaques.
- Results of larger trials haven’t shown as profound as we had hoped for, however we have rational for this!
- Women’s Health Study – 39,876 healthy women took 600 IU of natural source vitamin E or a placebo every other day for 10 years.
- The study did not see a reduction in CVD events, however it did find a 24% reduction in total cardiovascular mortality.
- Women’s Antioxidant Cardiovascular Study – 8,171 women randomised.
- looked at beta-carotene, vitamin E, vitamin C.
- Modest benefit for vitamin E among women with existing cardiovascular disease.
- Women in the active vitamin C and E experienced fewer strokes
- Patients taking vitamin E had significantly more heart failure. Vitamin E was linked to a 13% higher risk of heart failure and a 21% increased risk of hospitalization for heart failure
- Lott, E. The Journal of the American Medical Association, March 16, 2005; vol 293: pp 1338-1347. Brown, B.G. The Journal of the American Medical Association, March 16, 2005; vol 293: pp 1387-1390.
- a recently published analysis of clinical trials involving nearly 136,000 people who took vitamin E for one reason or another found that the overall risk of dying was greater in those who took higher doses, compared to those who took lower doses.
- Not a huge benefit when it comes to supplementation – this was also supported in a very highly regarded medical journal called The Lancet. We know that antioxidants in fruits and vegetables, which also contain valuable fibre can have a profound impact on heart health and prevention of heart disease.
Cognitive conditions (dementia, alzheimers)
- Oxidative stress caused by free radical damage can contribute to brain aging, cognitive deterioration and conditions such as alzheimers or dementia. .
- The literature has some mixed results, however again we know there is more to this complex puzzle.
- Prevention of Alzheimer’s Disease by Vitamin E and Selenium Trial (PREADViSE).
- This study aimed to determine if vitamin E or selenium supplements used alone or in combination can prevent dementia older men.
- 3,700 men aged 60 or older for 6 years
- Unfortunately the antioxidant supplements did not prevent the onset of Alzehimers disease.
- Physicians’ Health Study II (PHSII), – 5,956 men age greater than 65 years.
- The average treatment duration was 18 years – very long!
- Subjects were given 50 mg beta-carotene supplements or a placebo.
- Long term supplementation showed positive cognitive outcomes.
Statement by the Alzheimers Society regarding use of antioxidants:
“Though lab-based experiments on different types of antioxidants seem promising, there is only limited support for the claims that antioxidants may protect against Alzheimer’s disease from studies involving people.
However, increasing fresh fruit and vegetables in the diet has numerous benefits aside from increasing antioxidant intake and is highly recommended, especially as part of a Mediterranean diet”
We know there is data to suggest that eating a Med type diet (which is rich in antioxidants) is beneficial in reducing the risk of dementia.
- Carotenoids and breast cancer risk
- Dietary patterns and bladder cancer– looks at fruit and veg rather than supplements
- Dietary Soy Isoflavones (flavanoid family) and colon cancer
We know that eating a diet rich in antioxidant rich fruit and vegetables and protective against a range of different cancers. Whilst there are some gaps in the literature there are some really exciting trials currently underway.
Longevity & anti-ageing
If we can prevent the onset of chronic diseases through increasing our intake of antioxidants, we can lead a healthier life for longer!
“Free Radical Theory of Aging” (FRTA), also known as “oxidative damage theory of ageing” is a concept that free radicals and other reactive oxygen species are a byproduct of metabolism and occurs as a result of a number of exogenous factors; and it is the accumulation of damaged cells are the reason we experience age-related diseases and aging. Why antioxidants are of interest in terms of aging and longevity, is because they can block or downregulate these damaging pathways.
There are a number of different antioxidants that are of interest when we focus on anti-aging. These include – Ascorbic acid (Vit C), alpha-tocopherol (Vit E), Ubiquinol (Coenzyme Q10), Melatonin, Curcumin, resveratrol, etc..
- It is a unique lipid-soluble antioxidant and is essential for mitochondrial electron transport chain (ETC), which is a fancy way of referring to energy production within our cells.
- Benefits from heart disease risk, kidney disease, inflammation, fertility, aging, metabolic syndrome.
- In regard to CVD a cochrane review in 2014 found that supplementing with Co-Q10 showed a significant reduction in systolic blood pressure without improvements in other CVD risk factors, such as diastolic blood pressure, total cholesterol, LDL- and high-density lipoprotein (HDL)-cholesterol, and triglycerides.
- Endothelial function
- Inflammation – Meta-analysis explored the effect of CoQ10 on C-reactive protein (inflammatory measure), interleukin 6 (IL-6) and tumor necrosis factor alpha (TNF-α) in patients with inflammatory conditions such as multiple sclerosis, obesity, rheumatoid arthritis, diabetes, etc… It found that Co-Q10 doses between 60 to 500 mg/day for a 1-week -4-months significantly reduced production of inflammatory cytokines.
- Organ meats: Heart, liver and kidney
- Some muscle meats: Pork, beef and chicken
- Fatty fish: Trout, herring, mackerel and sardine
- Vegetables: Spinach, cauliflower and broccoli
- Fruit: Oranges and strawberries
- Legumes: Soybeans, lentils and peanuts
- Nuts and seeds: Sesame seeds and pistachios
- Oils: Soybean and canola oil
Resveratrol (RSV) – A polyphenolic compound that stimulates cell defense pathways.
- Protects these plants against UV rays and some fungal infections.
- It has been hypothesised that it is RSV that is responsible for the ‘French paradox’ – low rates of heart disease in France, despite a diet rich in cheese and red wine.
- There is evidence that resveratrol may be beneficial in the context of diabetes, CVD and cancer.
- Meta Analysis which looked at the evidence regarding RSV across a number of different species. It found that there are a few species that found life extension in response to RSV.
- Metabolic function
- Be careful of high doses of resveratrol if history of breast cancer
- Food sources: Red wine, grapes, peanuts, pistachios, dark choc, cacao, strawberries
Why go plant based?
- Environmental – A vegetarian, pescetarian or flexitarian diet with an increased intake of plants and reduced reliance on animal-based products (so not just a vegan diet) has been associated with significant reductions in premature mortality and environmental impact. https://www.thelancet.com/action/showPdf?pii=S2542-5196%2818%2930206-7
- Health – https://academic.oup.com/jn/article/148/4/624/4965931 Dietary changes to balanced flexitarian, pescatarian, vegetarian, and vegan diets led to reductions in premature mortality of 19% (95% CI 18–20) for the flexitarian scenario to 22% (18–24) for the vegan scenario https://www.thelancet.com/action/showPdf?pii=S2542-5196%2818%2930206-7
Nutrients to be aware of
If you’re planning on going fully plant-based, vegan, then there are some important nutritional considerations
Vit B12 – most will need a supplement. Check your levels.
Mushrooms, tempeh, miso and sea vegetables are often claimed to be a source of B12. However, this is not accurate. They contain a compound with a similar structure to B12, but it doesn’t work like B12 in the body.
Bon Soy (25mg calcium per 100mL) vs VitaSoy CalciPlus (160mg per 100ml = 50% RDI)
Impressed Plant Milk (almond, cashew, pea, fava bean) (117mg per 100ml) or oat milk
Listen to our milk ep and find a fortified alternative
Low oxalate dark green leafy veg – kale over spinach (the oxalates bind to the calcium), almonds, soy, white beans, edamame, broccoli, bok choy, okra
Selenium – include just one brazil nut per day
Iron – listen to ep 5
Iodine – iodised salt or miso/seaweed products
Omega-3s – you’ll get some from flaxseed meal, ground chia, walnuts → grinding enhanced the bioavailability which is still poor!). Consider a yeast or algae derived omega-3 supplement 0 chat to an APD or doctor.
Protein – it’s not hard to get enough protein. 0.8g/kg/d = 60kg person = 48g per day = 1 tin beans (15g) + glass plant milk (8.5g) + 2 cups broc or veg (15g) + ½ cup quinoa (4g) + handful nuts (5.2g)
Plant foods are lower in certain amino acids than animal products and it is important to get a complete AA profile across the day. This is fairly easy to do so long as we include a variety of plant foods daily – eg rice + beans or tofu + peanut satay sauce or soy milk + chia seeds.
Complete amino acid profile = soybeans, quinoa, chia, hemp, seitan
Important to know that it’s not inherently healthier to be vegan/vegetarian vs omnivorous. What’s unanimously healthy is a diet rich in plant foods, but it doesn’t have to be a diet devoid of animal foods. You can be a vegan and also not have a healthy or balanced diet
Processed meat alternatives
Report: – World Health Organization Collaborating Centre on Population Salt Reduction, The George Institute for Global Health
Other Key References:
Causes and triggers
- Brain-gut axis – https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4367209/pdf/AnnGastroenterol-28-203.pdf
- Gut microbiome – https://onlinelibrary.wiley.com/doi/full/10.1111/apt.12728
- Environmental factors
- Beatty JK, Bhargava A, Buret AG. Post-infectious irritable bowel syndrome: mechanistic insights into chronic disturbances following enteric infection. World J Gastroenterol. 2014;20(14):3976-3985.
- Enck P, Aziz Q, Barbara G, et al. Irritable bowel syndrome. Nat Rev Dis Primers. 2016;2:16014.
- Thabane M, Marshall JK. Post-infectious irritable bowel syndrome. World J Gastroenterol. 2009;15(29):3591-3596.
- Thompson JR. Is irritable bowel syndrome an infectious disease? World J Gastroenterol. 2016;22(4):1331-1334.
Investigations and Diagnosis:
- Blood tests, stool samples, family history, colonoscopy, gastroscopy
- Hydrogen Breath Tests
- Rome Criteria
- Low FODMAP diet (Fermentable, Oligosaccharides, Disaccharides,Monosaccharides and Polyols)
- Management: 6-8 week elimination diet and slow reintroduction (under close guidance from a DT)
- Soluble vs Insoluble – depends on your symptoms.
- Soluble fibre (e.g., psyllium husk) may assist in the management of IBS and can improve symptoms of patients.
- Supps may cause bloating – important to introduce this gradually.
- Some evidence for use of probiotics in the context of GIT infections and diarrhoea. About 7–30% of patients with infectious diarrhoea can develop IBS. Probiotics may help to improve the barrier that lines our gut.
- There is no specific probiotic that is recommended. If you choose a probiotic, take the same strain and dose for 4-weeks. If you feel better, continue with the same probiotic. If you do not feel better after 4-weeks, try a different dose or strain. We can guide you where to start depending on your Sx.
Summary: Diets for the treatment of IBS symptoms are complex and multifactorial. Due to huge amounts of patient variation in severity of symptoms and intolerances, it can challenge to point point an exact method.
Many different diets have been studies in the treatment of IBS, however there have been huge limitations in many of those published. At present the diet with the best level of evidence is the elimination diet (low fodmap and reintroduction) under the guidance of an APD.
Medical management references:
- American Gastroenterological Association Institute Technical Review on the Pharmacological Management of Irritable Bowel Syndrome- https://www.gastrojournal.org/article/S0016-5085(14)01090-7/fulltext
Dr Carly Ymer – BIO:
Dr Carly Ymer is a clinical psychologist who practices holistic psychotherapy, using her passion for mental and emotional wellbeing to help clients be their best. She believes and practices within an integrative and holistic framework of the synergy between thinking, emotions, and behaviour. Carly is passionate about working with children, teenagers and young adults, with a range of emotional, social and behavioural difficulties.
What is it?
- Very low-carb, moderate-protein and high-fat diet. It typically contains 75% fat, 20% protein and only 5% carbs.
- 20g CHO per day – Eg 1 apple + ½ cup peas + 4tbsp milk OR sk latte + ¼ cup chickpeas OR 1 small banana OR 1 small slice sourdough bread
Does it work?
- Weight loss – very low CHO intake leads to increased fat metabolism for ketones.
- The rise in fat burning does not necessarily mean loss of fat stores given the intake of fat in the diet has significantly increased.
- Studies suggest that the overall body fat balance is equal if not in favour of fat storage!
- CHO insulin model – reduced insulin so less fat stored. Good in theory but a very intensive $40 million study of 17 men were admitted to metabolic wards for intensive monitoring for 2 months – one month high carb, one month ketogenic. Matched calories on both. Subjects spent 2 consecutive days each week residing in metabolic chambers to measure changes in exergy expenditure and underwent DEXA to measure body composition. The study found that the subjects lost more body weight on the ketogenic diet, but rate of fat loss was 50% slower on the keto diet and instead the on the ketogenic diet that subjects lost more water weight and suffered more LBM (muscle protein) catabolism. Interestingly, this was a study funded to explore their hypothesis which was the opposite!
- Epilepsy that is refractory to medication – often as third or fourth line therapy.
- Cancer – theory based on Warburg effect that cancer’s preferred fuel source is sugar and that by reducing CHO intake we can deplete tumour tissue of the glucose required for tumour cell metabolism. Unfortunately, that’s the case of most of the healthy cells in our body. Sugar fuels everything and cancer can feed off everything, including ketones.
- As it stands, there are no clinical trials demonstrating a benefit of a ketogenic diet in cancer patients. Studies underway exploring the ability to slow the growth of certain brain tumours.
- What our best practice guidelines do specify though is that while it may be difficult to induce tumour responses with a ketogenic diet, this does not argue against preferring fat to supply energy to patients with advanced cancer and inflammation-induced insulin resistance – so more avo, nuts, seeds and extra virgin olive oil and less refined sugars.
- Our carbohydrate sources in our food supply don’t just provide energy. Think about a chickpea. Yeah it’s got carbs, but it’s also loaded with fibre, protein, folate and iron.
- One important factor that we miss when we significantly restrict CHO intake is fibre, prebiotics and the impact on our gut.
- Bowel cancer risk + digestive health
- Some proponents suggest ketogenic diet to manage diabetes
- Managing the symptoms – high blood glucose levels – rather than the cause – insulin resistance (may be as a result of being overweight, lack of PA + poor dietary patterns).
- Ketogenic diet has been associated with development of NAFLD and associated hepatic insulin resistance in mice. This can induce or worsen insulin resistance
- Some human studies show an initial improvement in insulin response on a ketogenic diet but this seems to only be temporary – which makes sense given the KD is reducing the symptoms (high blood glucose levels), but may actually be worsening the cause (fatty deposits in the liver and cells)
- KD are often high in saturated fats
- Breakfast of egg, bacon, bullet coffee; lunch and dinner of M/C, small amount of veg and some cream for dessert…it’s no surprise that this will take its toll.
- The majority of animal studies suggest that when KD are rich in saturated fats they negatively impact blood lipid profiles and cardiovascular disease risk
- In human studies, there are really varied results, often depending on the length of time subjects are followed and the profile of their fat intake.
- Some studies highlight that even in cases where KD show a reduction in total and LDL cholesterol, these were significantly more reduced with a high-protein medium-carbohydrate diet than with a KD
- Even in retractable epilepsy compliance may drop to 50% after a few months. For epilepsy this is disappointing for ability to gain disease control, but for the general population this could be a protective mechanism…children have died from scurvy and selenium deficiency and the long term implication for cardiovascular and gut health just might not be what your human control centre wants.
- 20g CHO per day
- Eg 1 apple + ½ cup peas + 4tbsp milk OR 1 small banana OR 1 small slice sourdough bread
- Introducing ketones from external source can mean you will test positive for the presence of ketones – suggesting you’re in “ketosis”. Simply because the ketones exist doesn’t mean you’ve gone through the pathways to get there.
- The presence of ketones signals to the body that you’ve been making them, and therefore may slow or even stop it’s own production of ketones from fat stores. This is a particularly important safety mechanism because ketone blood levels become too high, your blood can become dangerously acidic.
- Therefore, taking exogenous ketones may prevent body fat from being used as fuel, at least in the short term
- One benefit of exogenous ketone esters or slats – often taken as a drink – is that they may reduce circulating levels of our hunger hormone ghrelin. One study of 17 people found reportedly lower levels of hunger after taking the ketone drink. But only effective after a fast, not after a meal
- You’ve also got to bare in mind that ketones contain calories. A single serving of exogenous ketone salts typically contains less than 100kcal or 420kJ, but to maintain a state of ketosis, you’ll need several servings each day = could add up to the energy in a main meal!
- Bulletproof coffee/ MCT oil – contains medium-chain triglycerides, can help keto dieters add more fat to their diets and stay in ketosis. It’s digested more rapidly than traditional fats but can have digestive side effects and again a caloric load.
- If you’re going keto, prioritise unsaturated fats – avo, nuts, seeds, EVOO
- Make your carbs count
- Don’t rely solely on the white ones (white bread, white rice, white potatoes, white pasta)
- Choose CHO sources that offer something else: fibre, protein, vit, min
- Fibre: wholegrains such as barley, bulghur, freekeh, spelt, quinoa, oats, legumes, peas, corn, pulse pasta
- Protein: legumes, ricotta or cottage cheese
- Vitamins: sweet pot, peas, corn
- Minerals: greek yoghurt, milk, ricotta, cottage cheese
OnCore Nutrition 15 min free phone consults
Turmeric, active ingredients are turmerone oil and water-soluble curcuminoids, among which curcumin has been the focus of research
- Native to south Asia
- Orange colour used in cosmetics and as a food colouring agent
- Absorption is poor and it’s metabolised rapidly. Absorption can be improved if taken with pepper (piperine) or fat, but this depends on if you have a therapeutic goal.
- A meta-analysis of randomized clinical trials revealed that curcumin is effective in decreasing the concentration of tumor necrosis factor-alpha, a key mediator in many inflammatory diseases.
- Turmeric may help alleviate symptoms of irritable bowel syndrome or ulcerative colitis,
- Turmeric extract was found to be safe and equally effective as a non-steroidal anti-inflammatory drug for the treatment of osteoarthritis of the knee. Need to absorb it so take with piperine/fat.
- Curcumin has been studied to have anticancer properties through really the 3 main pathways of cancer development:
- It’s antioxidant properties and protection against DNA mutations and cell damage
- It’s antiproliferative properties that reduce tumour growth and spread including inducing apoptosis (programmed cell death) and
3.Curcumin has shown ability to kill cancer cells directly by activating “execution enzymes” that destroy cancer cells from within.
- As an added benefit, curcumin seems to focus on the cancer cells and leave our healthy cells alone, unlike chemotherapy and RT that can’t distinguish between malignant and healthy cells.
- Several animal studies suggest that turmeric helps to prevent colon, stomach, and skin cancers in rats exposed to carcinogens.
- Human studies are underway to validate these findings in humans
- What’s interesting is that while curcumin shows benefit in breast cancer, pancreatic cancer, colon cancer, multiple myeloma, myelogenous leukaemia and skin, kidney and colorectal cancer, turmeric as a whole food has in some cases been shown to be even more effective!
- In fact, a study was undertaken with turmeric where they removed the active component curcumin, and it was found to be just as effective!!
- Topical turmeric-based cream has shown some ability to reduce radiotherapy-induced dermatitis in patients with head and neck cancer; and oral mucositis
- Can interfere with some chemotherapy agents
- May improve concentrations of liver enzymes
- Some but insufficient evidence for treatment of kidney stones and reduction in stomach and intestinal gas
When it’s not a good idea
- Can interfere with many drugs, blood thinners and chemo agents when taken as a supplement.
- One study – These findings support the hypothesis that dietary curcumin can inhibit chemotherapy-induced apoptosis through inhibition of ROS generation and blockade of JNK function, and suggest that additional studies are needed to determine whether breast cancer patients undergoing chemotherapy should avoid curcumin supplementation, and possibly even limit their exposure to curcumin-containing foods. https://www.ncbi.nlm.nih.gov/pubmed/12097302
Other spices with similar impact
It’s not the only option…Other anti-inflammatory and health promoting spices
- May improve digestion by increasing activity of digestive enzymes and increase release of bile from liver.
- May assist IBS – a low level study explored cumin essential oil and found it reduced abdominal pain, bloating, fecal urgency and presence of mucus discharge during and after treatment with Cumin extract.
- May improve BG control in Diabetes – still unclear the exact mechanisms or exactly how much is required to obtain the desired therapeutic outcomes.
- Some studies suggest that supplementation may improve chol profile
- The salicylic acid and other phenolic acids may have a anti-inflammatory and free-radical reducing properties to reduce cancer risk
- Cinnamon – coined gift fit for kings
- Anti-inflammatory properties similar to that of turmeric – high concentration of antioxidants (polyphenols).
- Reduce insulin resistance – Cinnamon has shown to be able to improve insulin sensitivity, which means better able to reduce our BGLS.
- Cinnamon contains contains enzymes which work in our GIT which slowing down the breakdown of CHO’s. This reduces the amount of glucose in our blood after a meal.
- 120mg per day can reduce total chol, LDL, TGs
- May help protect neurons, normalize neurotransmitter levels and improve motor function – researchers interested for Alzheimer’. Human studies are lacking, however watch this space..
- Ginger root contains compounds that may help relieve or prevent nausea and vomiting. These substances can increase the flow of saliva and digestive juices and may also help calm the stomach and intestines. Some studies have found ginger may help nausea caused by chemotherapy, but larger studies are needed to confirm these effects.
- Eating fresh ginger in high doses can have blood-thinning effects by preventing platelets from sticking together.
- Laboratory studies suggest that ginger can protect brain cells from the plaques that cause Alzheimer’s disease, but this effect has not been studied in humans.
- Some data in OA and RA
- May reduce BGL
- May reduce drug dependence!
- May improve digestive health – reduce diarrhoea, gas and bloating
- Supplemental doses can interfere with warfarin or blood thinners, NSAIDs, insulin, during pregnancy or pre-surgery. Stick to the real food!
- Ashwaghandha (Indian or asian Ginseng)
- May assist with angina, T2DM management, immune function and…
- Sexual dysfunction benefits for erectile dysfunction
- Some reports of manic and psychotic episodes with supplements – stick to the food! Make into a tea or add to asian soups
Supplemental doses of many of these spices can interfere with warfarin or blood thinners, NSAIDs, insulin, during pregnancy or pre-surgery or cause nasty side effects so stick to the real food!
- What is it: Capsaicin is the active ingredient in chilli, cayenne pepper, capsicum
- What for: Neuropathic pain and neuropathy, OA pain, weight loss, psoriasis, cluster headaches
- Caution: GIT lining, reflux
Health benefits of capsaicin
- Weight loss: There is evidence to suggest intake of chilis (containing capsaicin) can enhance fat burning potential and reduce appetite, which of course can assist with weight loss. As always the literature suggested that regular ingestion of capsaicin compounds in conjunction with a healthy diet & lifestyle showed the most promising outcomes.
- Pain management: There is some low level evidence to support that Capsaicin has the ability to bind to pain receptors to reduce the pain sensation. However these were small studies and effects were not lasting.
Be cautious of:
- GIT upset (abdominal pain/cramping or diarrhoea) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4102147/
- Cancer: There is some suggestion of chemoprotective effects however the evidence of safety vs risk is mixed regarding chili consumption. As mentioned, adding too much chili may have the ability to burn the lining of our GIT and this has been seen in some observational studies.
- Long term topical use may increase risk of skin cancer – eat don’t rub it Look out for capsaicin as active ingredient in some topical creams and nasal sprays. It is also available in a prescription-strength patch.
In summary: See what agrees with your body! If you love chilli, enjoy it! If you don’t moderate the amounts you eat.
Eat your spices
- Add cinnamon and turmeric to oats – try our carrot cake bircher or make this into balls with some dates. Add yoghurt if you need to absorb it.
- Ginger tea or water, stir fry, bliss balls,
- Chilli, cumin, paprika, turmeric to your evening meals – veg chilli con carne, dhal or curry
- Ginseng tea or add to your soup
- TO DO: buy minced chilli, garlic, ginger, dried cumin, paprika, chilli, turmeric
- In order to lose weight we do need to be at a caloric deficit
- This is calories in vs calories out, but the in and out are far more complicated than you think
- Energy in: fat, alcohol, carbs, protein. Fibre not absorbed
- Energy out: BMR, non-exercise energy, activity factor, thermic effect of food (protein 30%, carbs 8-10%, fat 2-3%, fibre 30%)
- For fat loss, we need to access fat stores = lipolysis (very complex), gluconeogenesis or ketogenesis
- For weight loss we need a negative energy balance
- Reduce energy in – (water, fibre)
- Increase BMR – enhance lean body mass, heat, cold, glycaemic index, green tea, oolong tea, capsaicin, sleep (insulin, ghrelin, leptin balance), coffee, MCT vs LCT
- Increase thermic effect of food – increase protein, reduce fat = increased energy output
- Increase non-active energy expenditure and activity factor – increase energy output. HIIT has the added benefit of burning energy and enhancing LBM.
- Aim for
- Increase your BMR – lean body mass, sleep. Tea, chilli and some other compounds can help but the impact is minute.
- Increase activity factors – both incidental and planned
Adrenal fatigue… does it exist?
- Mayo clinic: ‘Perched atop each of your kidneys, your adrenal glands produce hormones that help regulate your metabolism, immune system, blood pressure and other essential functions.’They produce a variety of hormones including adrenaline and the steroids aldosterone and cortisol
- To keep it simple, the concept around adrenal fatigue is that under ongoing stress our body places pressure on our adrenal glands and over produces our stress hormone known as cortisol which essentially causes our adrenal glands to burn out and not work properly.
- As our adrenal glands don’t work properly, this means they are unable to produce the necessary hormones to help our bodies function properly and therefore result in symptoms such as fatigue, trouble sleeping, weakness, brittle nails, weight gain/loss and alopecia.
- Sadly this is a diagnosis given to patients from many alternative practitioners which gives them hope and a diagnosis for their problems/health issues..
- Many supplements on the market targeted at ‘adrenal support’ with an expensive price tag
The evidence: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4997656/
- Large systematic review published in 2016.
- From 3,470 articles found, only 58 studies met criteria for proposed adrenal fatigue.
- 33 were carried in healthy individuals, and 25 in symptomatic patients.
- The researchers found it difficult to draw conclusions, this is because there were many different methods used amongst the studies (when it comes to research consistent methodology & the use of validated tools are important) and this made it difficult to draw conclusions, the measures of fatigue were poorly documented and standardised tools were not used, the way cortisol was assessed was not endorsed by endocrinologists and I could keep going.
- As a result of these findings (or lack of findings) this systematic review concluded that adrenal fatigue is not a true medical diagnosis.
- So if you are someone who has had this diagnosis, don’t feel lost, rather focus on managing your stress levels rather than putting a label on the way you feel.
- Eg. Try to get into bed earlier and get more sleep, try meditation or yoga, make an effort to eat a more balanced diet.
- Be careful when it comes to supplements, many of the drugs are not regulated or tested for safety.
- If you’re unsure, contact your healthcare provider, GP, Endo, dietitian, etc..
FRESH VS FROZEN VEGETABLES
- The study mimics typical consumer purchasing and storage patterns of produce.
- The study compares key nutrients in fresh, fresh-stored, and frozen produce.
- Fresh produce loses vitamins over time during refrigerated storage.
- Consumers’ assumption that fresh produce has much more nutritional value than frozen is incorrect.
- In some situations, frozen produce is more nutritious than its 5-day fresh-stored counterpart.
- Reduced food waste
Benefits of frozen
- Nutritional profile – same if not better
- Reduced food waste
- Lower cost
- Cost – e.g. broccoli – true cost by weight of fresh vs frozen = $7.38/kg fresh ($4.70 if use every single bit!) vs $5 frozen
Downsides of frozen:
- Carbon footprint – look for local produce. Reduced waste may counterbalance this.
- Starchy veg
- Less inspiring
- Frozen winter veg, kale, spinach, stir fry mixes
- Big packs vs little steam fresh – need about 4 of these for one serve!
- Good way to eat more which is really the moral of the story – A recent meta-analysis into fruit and vegetable intake and the risk of cardiovascular disease, cancer and total mortality, by scientists, published in the International Journal of Epidemiology suggests that while disease risk can be reduced by consuming 5 portions of fruit and vegetables a day – the ‘5-a-day’ campaign – the largest benefit can be gained by eating around 800g, approx. 10 portions, per day. https://academic.oup.com/ije/article/46/3/1029/3039477
Australian Bushfire Donations:
OnCore Intermittent Fasting Guides – https://store.oncorenutrition.com/collections/all
Practicalities / sustainability / contraindications
IF and calorie deficit similar weight loss outcomes
Some find IF mentally challenging than consistent cal deficit, others find the opposite
- Science currently unclear if IF vs CR is responsible for the body composition changes and good health.
- Why the evidence is unclear is that many studies have been conducted in animal based models which we know has limitations
- Human studies have been relatively poor (e.g. short duration) and mainly focused around weight loss (in the short term) rather than aging and disease risk.
- 100 obese participants – 6 women and 14 men, aged between 18–64 (the mean age was 44). Note they did not have metabolic conditions (e.g. T2DM).
- Looked at different dieting patterns
- Alternate-day fasting – consumed 25% of their daily energy requirements on fast days and 125% of their daily requirements on alternate days.
- Calorie restriction diet plan where the subjects consumed slightly less than their energy need (~75%) each day.
- Another group with no dietary intervention.
- Results: With regard to the two dieting groups, they both lost a similar amount of weight and showed no significant difference regarding, blood pressure, heart rate, triglycerides, fasting glucose, fasting insulin, insulin resistance & inflammatory markers at month 6 or 12.
- Of note there was a higher drop out rate within the alternate fasting day group, which may indicate adherence and consistency may be a challenge with this method,
- Our recommendation: No real difference between the fasting vs calorie restriction group. There is no magic pill when it comes to weight loss. Do what works best for you and work with a professional who understands your needs.
- Intermittent CR and daily CR diets appear to be equally as effective in decreasing body weight, fat mass, and potentially, visceral fat mass. However, intermittent calorie restriction protocols may be superior in that they help conserve lean mass at the expense of fat mass. More research + longer term studies are required.
According to your circadian rhythm, nighttime is for resting, not eating.
On average – we eat every 3hrs and 6 minutes and for a duration of approx 15hrs per day
Mice that eat in opposition to their circadian rhythm gain significantly more weight than mice that only eat during waking hours, even if they eat the same amount of food. Not all studies in humans support this notion.
At night, you may be more likely to choose unhealthy, calorie-dense foods.
- High risk time for high fat, calorie dense foods
- Emotional / non-hungry eating
- Appetite changes when tired – https://www.ncbi.nlm.nih.gov/pubmed/20357041 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3763921/
- Restriction/insufficient intake during the day → compensation
The first RCT in humans was published half way through 2019 to determine how meal timing affects 24-hour energy metabolism when food intake and meal frequency are matched
- Small n= 11 men + women aged 25-45
- two groups of people who ate the same three meals per day for 4 days but with different timings: the early time-restricted feeding (eTRF) schedule and the control schedule.
- 8am – 2pm (18hr fast) vs 8am – 8pm (12hr fast)
- On the fourth day, 24‐hour energy expenditure and substrate oxidation were measured by whole‐room indirect calorimetry, in conjunction with appetite and metabolic hormones
- No effect on 24hr energy expenditure
- May enhance fatty acid oxidation – i.e. using fat for fuel rather than carbohydrates
- TRF Decreased ghrelin levels, enhanced fullness, decreased desire to eat
- Meal‐timing interventions facilitate weight loss primarily by decreasing appetite rather than by increasing energy expenditure. eTRF may also increase fat loss by increasing fat oxidation.
Another study 6am-7pm
- Nothing unless than the hrs to adhere to – no type, amt of food, no record keeping
- Ate fewer calories and lost weight
- Same kJ at BF vs dinner – when given at BF = less weight gain
- 3 meals vs 1 meal – same calories
- Normal-weight subjects are able to comply with a 1 meal/d diet. When meal frequency is decreased without a reduction in overall calorie intake, modest changes occur in body composition, some cardiovascular disease risk factors, and hematologic variables. Diurnal variations may affect outcomes.
- Both late eating
- Improvement in weight loss, but blood pressure and chol levels suffered!
- eTRF (6-hr feeding period, with dinner before 3 p.m.) or a control schedule (12-hr feeding period) for 5 weeks and later crossed over to the other schedule.
- eTRF improved insulin sensitivity, β cell responsiveness, blood pressure, oxidative stress, and appetite.
- We demonstrate for the first time in humans that eTRF improves some aspects of cardiometabolic health and that IF’s effects are not solely due to weight loss.
- Even 10-11hrs TRF beneficial – weight loss, improved energy levels, improved sleep
IF and breast cancer risk
These findings suggest that eating more frequently, reducing evening energy intake, and fasting for longer nightly intervals may lower systemic inflammation and subsequently reduce breast cancer risk. Randomized trials are needed to validate these associations.
Breast cancer prognosis
– 2413 women (mean [SD] age, 52.4 [8.9] years)
– mean (SD) fasting duration of 12.5 (1.7) hours per night.
– fasting less than 13 hours per night was associated with an increase in the risk of breast cancer recurrence compared with fasting 13 or more hours per night but wasn’t associated with mortality rates
NO RCTs YET!
- Very small study n = 3 men who had had type 2 diabetes for 10-25 years.
- Medical supervision
- Fasted every other day or 3 days a week.
- Within a month, all of the men were able to stop taking insulin. And in less than a year, they were able to cut down on or stop other diabetes medications.
- Another small study, 10 obese men with type 2 diabetes followed a time-restricted eating plan. They improved their fasting glucose and lost weight over 6 weeks.
- Bigger studies are needed to confirm those findings and to see how long the results last
- The American Diabetes Association notes that if you’re overweight or obese, weight loss can help lower your HbA1c level (a gauge of your blood sugar control over the last 2-3 months) and lower your risk for heart disease.
- Talk to Dr/endocrinologist first
- Adjust your insulin
- Monitor for lower BGL
- Beware of large carbohydrate load on first meal
Cell Metabolism: “Early Time-Restricted Feeding Improves Insulin Sensitivity, Blood Pressure, and Oxidative Stress Even without Weight Loss in Men with Prediabetes.”
BMJ Case Reports: “Therapeutic use of intermittent fasting for people with type 2 diabetes as an alternative to insulin.”
Joslin Diabetes Center: “Yom Kippur and Diabetes.”
BMJ Open Diabetes Research & Care: “Recommendations for management of diabetes during Ramadan: update 2015.”
- Labels must also have a list of ingredients. Ingredients must be listed by weight in descending order (i.e. the first ingredient contributes the largest amount to the product and the last ingredient contributes the least).
- Regarding additives, products must show the number or the name of any additives they contain (e.g. monosodium glutamate may appear as MSG or 621). If you know you have sensitivities to any additives, it’s important you know their corresponding numbers so you can keep an eye out for them,
- If the product contains any major allergens such as nuts (peanuts, cashews, almonds, walnuts, etc.), shellfish, fish, eggs, sesame seeds, soybeans, wheat, gluten, they must be declared on the label.
- Sugar No added sugar: No added sucrose, glucose, honey, malt, fruit juice, etc.
- Un-sweetened: No added intense (artificial) sweeteners, sucrose, glucose, honey, malt, fruit juice etc. Diet: At least 40% less kJ than regular product
- Comparative claims eg ‘reduced’, ‘increased’, ‘light’ or ‘lite’ must refer to the reference food
Look out for:
- Sugar aliases – dietitian colleague of ours has put together a list of 48 sugar aliases! Some derived from cane sugar, some from fruit, corn, beets, alternative sweeteners like agave and rice malt syrup,
- Don’t be fooled by fancy marketing, sugars can have many different names, and we will put this list in the show notes for you all to have a look at. Just because a food contains rice malt syrup or coconut sugar, this is still sugar.
- Foods containing more than 10mg sulphite preservatives/kg must be labelled as containing sulphite as this is the level that may trigger
- These are claims about something in a food and how it can affect your health. E.g. ‘Fibre helps keep you regular ’;. ‘This food is low in sodium (salt). A diet low in sodium may help reduce blood pressure’. Only pre-approved ‘food-health relationships’ for high level health claims are allowed to be made. All health claims must be supported by scientific evidence. Can’t refer to the prevention, diagnosis, cure or alleviation of a disease, disorder or condition
Health Star Rating
- The Health Star Rating is a front-of-pack labelling system that rates the overall nutritional profile of packaged food and assigns it a rating from ½ a star to 5 stars.
- Aims to provide a quick, easy, standard way to compare similar packaged foods.
- Developed by Aus Gov with collaboration from industry and public
- Opt in, voluntary, all, some or none of their products
- Compares products of the same category eg cereals with cereals
- Food manufacturers and retailers are responsible for the correct and accurate use of the Health Star Rating system
- Nutrients in isolation do not represent the value of a food
- Doesn’t differentiate between whole foods and processed / packaged foods
- Putting a health star rating on a processed food undermines message of good nutrition
- Added sugars are not differentiated from natural sugars – eg a muesli bar with oats and dried fruit vs bar with tonnes of sugar
- Products containing additional dietary fibre can get bonus points which can be used to offset negative points they get for saturated fat or sugar,
- This is how Nutrigrain – 4 stars despite the fact it’s still literally 27 per cent sugar. Add inulin = bonus points. Very easy to manipulate.
- Milo (4.5 stars, only IF consumed with a specific amt of skim milk, otherwise 1.5 stars if eaten alone!) literally receives a higher health star rating if eaten with ice-cream
- Certain brands of clean, unsweetened Greek yoghurts sit at 1.5 stars. Some lolly bags sit at 2.5.
- Salmon sits at 3 stars, beer battered chips sit at 4.
Shelf, fridge and freezer life
- Serve size vs Per 100g
We look for (depending on the food of course)
- Total kJ
- Total protein per 100g
- Sugar per 100g – check ingredients list to explore if natural vs added
- Saturated / trans fats
- Fibre / Vit / Min
Food Switch App
Source of product and ingredients
Remember, some of the healthiest foods may not have labels or health claims (e.g. fresh fruit and vegetables, nuts, lentils, beans, fresh meat and fish).
Trends in the New Year
Google trends data
- According to well known Clinical Psychologist Dr. Howard Rankin, expert on behavioural change, a large part of the problem is that we think we have control over our behaviour, when really we don’t.
- Lauren and I see this regularly in practice. It’s wonderful to have goals and aspirations, but the psychology and motivation behind behaviour change in complex.
- We know that habits (which often take 21 days to break) and stress, reduce our conscious control over the choices we make
- What drives our behaviour is not always logical, as humans we are emotional! You guys would know, sometimes we do things we know aren’t good for us, but we don’t know what drives us to pursue them!
- Quote by Dr Rankin: The more primitive, emotional brain generally has precedence over the newer, more rational brain.
- This is really important to note when it comes to setting achievable goals for the new year.
- Knowing this, we want to make sure you set yourself up for setting positive and realistic goals in the new year!
Why New Year’s resolutions don’t work
- Abrupt change too quickly
- Expectations too large therefore setting self up for failure
- To successfully achieve these resolutions, small, short-term goals are the most effective and taking resolutions one step at a time is the best way to succeed
- Fear is such a powerful emotion it can override our priorities and goals we set. Fight/flight. We run away from fear before we run towards pleasure. We can have a fear of failure, success, or just fear of change—stepping outside our comfort zones—that stops may of us in our tracks before resolution become habits.
How to make them stick
- Make resolutions tangible and achievable. For example, instead of stating you will ‘lose 20kg in 2020,’ plan that you will ‘walk everyday for 2 weeks’ or ‘avoid choc after 8pm for 2 weeks’.
- Say it out loud. Write it down. Tell someone. Anyone. Be accountable.
- Enlist a support crew. Cheerleaders
- Make your goals EXTREMELY SMALL. Like stupid small. For example, she suggests instead of aiming to workout three times a week, you start with two squats a day. The change is so small, you won’t stop with just two. Walk only to the letter box. No chocolate on Tuesdays. Walk only to the letterbox. And that’s how these small habits grow from ridiculously small to big. It’s hard to resist not doing more, because it’s just so easy.
- Anchor it to something. Your squats for eg, tether it to something you already do every day, like brushing your teeth. It’s only 2 mins. And all of a sudden it’s achievable.
- Opt in vs opt out. What are the things you always do? Eat lunch, brush your teeth, attend your specialist appts, go to work. Put your goals in that category. A MUST DO unless something major trumps it. Physically put them on your to do list, your calendar, your reminder list on repeat.
- More positive less negative. – Set your phone calendar to give you positive messages or reminders about your goals a few times per day. Remind yourself to walk. Set an alarm that call your 8pm cut off time.
- Time – it takes 17 to 21 days to form a habit; therefore, keeping a goal for those 21 days will support success
Top Tips for navigating Festive Feasts
1. Don’t overthink it. So you ate too much cheese. Acknowledge it then move on.
2. Move when you can. A brisk walk with the fam is a wonderful way to pull yourself out of a pudding nap.
3. Food envy? Have a little bit of everything. But just a little bit. Recruit a friend and remember sharing is caring
4. Eat mindfully. Listen to your body. Stop when you’re satisfied.
5. Savour every mouthful. The festive season is delicious. Enjoy it with your loved ones!
6. Refer to point 1.
Overeating is completely normal. It is our thoughts, feelings, and reactions to overeating that can be damaging beyond the overeating moment
Overcompensating by restricting is not the solution…
Our bodies need a regular supply of food to stay alive and perform all of the various chemical reactions and daily bodily functions (like keeping our heart beating, allowing our diaphragm to expand and relax with each breath, our kidneys as they remove our waste, our growing nails, cell turnover in our gut…etc).
Restriction → deprivation → protection through overcompensating
When our bodies feel the threat of scarcity (i.e. starvation from a evolutionary perspective)- even if that is in the form of intentional restriction- our bodies will look to protect us through eating more to compensate. This is a natural biological reaction..
Our suggestion is to in fact NOT skip breakfast! Many people skip breakfast in anticipation of the big festive meal, but in many cases that just makes it more likely that you’ll be ravenous at lunch or dinner time meaning you’re less likely to actually enjoy the food (i.e. scoff it!)and more likely to eat to the point of discomfort.
Give yourself permission to eat how you would want a loved one to eat. Should they skip the xmas pudding? Should they feel bad about enjoying the xmas ham? And therefore should you?
Revisit your values and goals. Give yourself the time and space to allow your actions to align your behaviours with these values
Feel and respect your fullness – but I would add a big caveat to this one: it’s okay if you eat past the point of fullness.There’s a lot of delicious food and a lot of food that we don’t get a chance to eat very often and we want to enjoy it all with the people who put the thought and care into making it. Notice and check in with how your body is feeling but know that it’s okay if you eat past the point of comfortable fullness. Notice it. Be curious but do not be judgemental! You’re allowed to eat for more reasons than just pure hunger.
Honour your fullness. Give yourself permission to not eat also! Social pressure, “eating for others”
- “Thank you, this looks great but I’m actually feeling satisfied already.”
- Postpone, save for later
Why we might not weigh you
If it fits your macros (IIFYM)
What is this diet?
- Tracking energy (kJ/calories) and macronutrients (protein, carbohydrates and fats).
- Calculating basal metabolic rate based on predicted equations (BMR is how much energy your body uses at rest). Add activity +/- stress factor to estimate your total daily energy expenditure (TDEE).
- Depending on goals, establish a calorie deficit, maintenance or surplus.
- Apply macro percentages to your end calorie number, e.g. 30% energy from protein, etc…
- Once you have your macro calories and split you then build this into a meal plan and track it all
- Nutrition knowledge
- Eye opening
- Label reading
- Goal oriented
- No forbidden foods
- Effective for weight loss …but there is far more to health than number on scales.
- It may promote an obsessive way of eating, body dysmorphia, disordered eating patterns
- Psychosocial limitations
- Does not encourage intuitive eating
- Practically arduous – weighing
- Low food variety
- Not necessarily an enjoyable or sustainable way to live life.
- When starting an eating plan, think about sustainability and true flexibility!
- Think about your sanity, relationships with loved ones and allow yourself to enjoy food in the moment!
- Listen to your body, eat when you’re hungry and stop when you’re full.
- There is so much more to life and enjoyment of food than calorie or macro counting.
Food variety score
Aim for >30 per week
Frankenfield D, Roth-Yousey L, Compher C. Comparison of predictive equations for resting metabolic rate in healthy nonobese and obese adults: a systematic review. J Am Diet Assoc. 2005;105(5):775–89.
Diet soft drinks
Diet soft drinks often replace sugar with artificial sweetener, often aspartame. Aspartame is around 200 times sweeter than sugar, so a very small amount is all that is needed to sweeten a product.
Studies performed in 1980 by Joint Expert Committee of Food and Agricultural Organization + World Health Organization (JECFS) established the Acceptable Daily Intake (ADI) of Aspartame as 40mg per kg of body weight, meaning that the average person can safely consume around 3400mg of aspartame daily without any adverse side effects. Can of Diet Cola is around 180mg = 18 cans per day.
Health impact of artificial sweeteners
- Some observational studies have found high intake of artificial sweeteners and diet soft drink is associated with an increased risk of obesity and metabolic syndrome
- Diet soft drink may increase appetite by stimulating hunger hormones (Grehlin), altering sweet taste receptors and triggering dopamine responses in the brain
- Predispose us to want sweet, calorie dense foods and fluids
- Observational (diet soft drink leads to weight gain) vs experimental studies (swap to diet soft drink leads to weight loss, but beware of funding source and bias)
- Link to weight gain possibly from above, possibly from pre-existing poor dietary habits. One study of over 300 overweight participants – drink 710ml diet soft drink or water per day for a year. At the end of the study, the diet soda group had experienced an average weight loss of 6.21 kg compared to 2.5 kg https://www.ncbi.nlm.nih.gov/pubmed/26708700
- Bias in the scientific literature – some studies (including this one) funded by the artificial sweetener industry have been found to have more favorable outcomes than non-industry studies, so we need to be careful when interpreting results.
- Observational studies have found a link between high intake diet soft drink and the development of kidney disease ? related to acid load on the kidneys from high phosphorus content.
- Gut microbiome: Artificial sweeteners alter the gut flora, leading to reduced blood sugar control. This may be one way diet soft drink increases the risk ofT2DM, but more research needed. https://www.ncbi.nlm.nih.gov/pubmed/27090230 https://www.ncbi.nlm.nih.gov/pubmed/25831243
- Be careful if you have low bone density – particularly with phosphorus containing drinks, so cola, and those with caffeine. PO4 interferes with Ca absorption.
At the end of the day, diet soft drinks offer no nutritional benefit. The ingredients list is empty and doesn’t offer anything positive to our health.
If you’re a regular drinker, set yourself a challenge. 21 days to change a habit. Set a target, recruit some friends, get a calendar going to mark off days and set yourself a challenge. Try our sparkling iced teas. Challenge to break the habit so you can enjoy sugar-free soft drink on occasion, but it’s not a must have each day.
Carbonated water and teeth
Cows milk full vs skim = change in ratios, no sugar added. Permeates ensure consistency in nutritional composition of milk.
Soy – similar nutritional profile – has to be by food standards law, plant-based, sometimes sweetened
Almond – low protein, low kJ, low fat, low CHO, low Calcium. Some are sweetened, some calcium fortified.
Rice milk – low is kJ, protein, high in natural sugars. Hypoallergenic.
Coconut milk – low in carbs and kilojoules, but is significantly higher in saturated fat than other non-dairy alternatives, lacks protein and calcium (unless fortified).
Oat milk – same kJ as cows milk, half protein, low fat, higher CHO, equiv Ca, beta-glucans (soluble fibre reduce chol reabsorption)
Milk comparison table:
Heart Foundation guidelines
- We love plants – lots of benefits to a diet rich in plants
- Generating conversation!
- Controversy is sadly often necessary to create a ‘movement’ we see why they did this! (We can’t because we’re trained and regulated health professionals – and therefore the most trustworthy source of nutrition advice)
- Removing stigma around veganism and vegetarianism (although the terminology they use was interesting eg never said vegan but implied it)
- They help clear up the stigma around soy – check episode 4 where we present the science in a less inflammatory way!
- Farming and environmental concerns
Unfortunately good TV often equals bad science
Supporting science – controversial sources, grand extrapolations from small studies, and statements that are misleading.
Anecdotal experience, conflicts of interest
- Whole premise of doc built on concept that gladiators didn’t eat meat…Their exact words were “gladiators were likely predominantly vegetarian”. True-ish. 80% ish plant based. Not vegetarian. Not vegan. Just like us.
- We were misled from the start
- They also implied that the gladiators were vegan for performance reasons, which again is misleading. Gladiators ate more of a plant based diet because of many reasons including access to animal products, availability, seasons and money! And because carbohydrates fuel the human body. Meat is expensive and many ancient civilisations only ate what they had access to.
- Gladiators weren’t overly lean – gladiators benefited from additional fat stores as food supplies were often scarce and this extra weight was protective when they went into battle/helped them stay alive. More fat = lasts longer in the arena. Different to many sports in today’s day and age.
- You don’t have to eat animals to build muscle
- So many other variables to consider when exploring athletic performance
- Nutritional advice should be tailored to the sport of choice, performance goals and outputs and individual variation
- In one instance, they do cite actual peer-reviewed research, he narrates: “And when it comes to gaining strength and muscle mass, research comparing plant and animal protein has shown that as long as the proper amount of aminos acids are consumed the source is irrelevant.” https://www.ncbi.nlm.nih.gov/pubmed/15212753. What they fail to include is that the same study states that “as a group, vegetarians have lower mean muscle creatine concentrations than do omnivores, and this may affect supramaximal exercise performance.” (achieving higher than what is considered maxima) = prime example of cherry picking.
- Theory: Beetroot juice consumption increases bench press by 19%. Beetroot study – review of 9 studies with total of 120 subjects numbers – The beetroot juice intervention led to significantly improved performance in four of the studies, while in another four no such effects were observed. In the show they quote a 19% increase in total strength for bench press, but this is referenced in the study cited not tested by it. Obviously we went and found the actual study. It was a cross over trial, 12 young men, lifting 60% of their 1RM (single rep max, the most they can lift). 3 sets until failure were performed and those reps were totalled. Those in the nitrate supplement group performed more reps. The weight equated to an 18.9% increase. “This study demonstrates that nitrate supplementation has the potential to improve resistance training performance and work output compared to a placebo.” The study was looking at a Nitric Oxide Enhancing Supplement, not just beetroot! Nitric oxide (NO) is generated from the nitrates in the beetroot. It’s a vasodilator so opens up blood vessels and improves flow in the short term. If you understand nutrition you’ll know that other foods contain nitrates, including beef, pork, chicken, liver, salmon, trout and tuna!
- Beware of supplements and performance enhancing drugs
Experiments – endothelial function (cloudy blood) and erectile function
- Neither are scientifically validated test. Looks good on screen. Convincing. But not scientifically meaningful.
- The ‘cloudy’ portion of blood in the test tube does not necessarily indicate there is an issue, more it shows there are triglycerides and fat transporters present called chylomicrons. This is a completely natural and necessary process, however the documentary portrays it to be negative to support their argument.
- If there was sufficient EVOO or avocado in the vegan burrito, the blood sample would have looked the same. 2hrs post meal. They didn’t specify how much avocado they put in. And they didn’t have to because this wasn’t a study!
- We know the fat was seen in their blood, but we don’t know if their endothelial function was impaired and/or their blood flow disturbed in any way due to their meal.
- The study that suppoerted their findings (n=11): “The high-fat meal consisted of 53.4 g fat (= 7.4 chicken breasts), 30.7 g protein, and 50 g carbohydrate, composed of 110 g rice, 100 g Korean barbecue, 20 g egg, 200 ml milk, 8 g oil, 25 g mayonnaise, 50 g vegetable.” The response shown, as stated in the paper’s title, was due to ‘oxidant stress’. Not the triglycerides
- Another study n=10. The standardized high-fat meal consisted of whipping cream, liquid chocolate and non-fat dry milk and contained 65 g of fat, 25 g of carbohydrates.
- Supporting study funded by the Hass Avocado Board
- We know that lean protein sources (e.g. poultry and fish) can improve endothelial function
- Neither of these “experiments” considered variables like sleep, muscle fatigue, stress, training, hydration, blood electrolyte levels, history of tobacco use, alcohol consumption, prior medical history, mental clarity, emotional state, genetic predispositions. n= 3 people. Not enough.
Clinically concerning hypertriglyceridaemia looks like this…
- The show claims, animals eat plants, so we should bypass animals and eat plants too. To put it in context for you a cow has 4 stomachs (we have 1), can extract amino acids from plant based materials as a result of enzymes and bacteria that we as humans do not have. As humans our digestive tract is very different. We can not get the same nutrients from grass as cows do.
- Compared to animal sources, plant based sources are a poorer source of leucine – important for muscle growth
- Vegans can get a complete profile of AA’s however they need to be eating a wide range of plant based protein sources.
- Estimated bioavaiability of protein in beef – 92%. Estimated bioavailbility of protein in kidney bean – 54%. Grams of protein does not equate to how much we as humans can absorb and access.
- There’s a funny bit here where they reference a peanut butter sandwich as containing an equivalent amount of protein to 3 ounces of beef. To achieve the ~20g of protein that is in 3 ounces of beef, you would need to consume 2 slices bread plus 4 tablespoons peanut butter bringing the total to 510 calories (2100kJ), 20g protein, 34g fat, and 39g carbs. Beef – 213cal (894kJ), 20g pro, 13g fat, 0 CHO. So the peanut butter sandwich has yes the same protein, but more than double the calories, almost triple the fat, 40g vs 0g carbs
- “Even iceberg lettuce has more antioxidants than salmon or eggs.” – worse than comparing apples & pears…Just because they’re not ‘antioxidants’ doesn’t mean they’re not valuable nutrients! Eg omega-3 fatty acids in salmon and protein in eggs are so valuable! How much protein or omega 3s are in iceberg lettuce?! Shall we compare it the other way?
- Go to episode 2 for tips on upgrading your salad
- Wilks claims that cow’s milk can increase oestrogen and lower testosterone in men. The 2010 study he references, published in the journal Pediatrics International, was conducted using the milk of pregnant cows. The scientists pulled from a pool of 18 people (seven men, six children, and five women), and found that milk reduced testosterone secretions—not overall testosterone —temporarily. Seven men. Temporarily. https://www.ncbi.nlm.nih.gov/pubmed/19496976
- Focus on ADDING plants rather than REMOVING animal products.
OnCore Practical Plant-based tips
Our upgrade your health tips (not 0-100!)
- It doesn’t have to be all or nothing.
- Focus on adding plants rather than necessarily removing all animals.
- Add veggies, fruit, spices or acidic marinades (such as yogurt or vinegar-based marinades) to your meats – this may decrease hetereocyclic amines (linked to cancer development) formation by up to 99%
- Start with meat free monday
- Upgrade to one meal per day – plant-based lunches
- Still eat REAL food – avoid fake cheese, fake-on, tofurkey. This takes planning and knowledge and perhaps tailored expert advice and guidance.
- It’s relatively easy to meet your protein needs. It’s hard not to overdo the carbohydrate load. Tailored advice from a dietitian will help ensure you’re eating to match your goals.
- Watch a David Attenborough documentary instead – we think this gives a far more powerful, realistic perspective on how we could be better looking after our planet and health simultaneously
- Think about where you’re getting your health information – underlying biases, conflicts of interest, governing bodies or registrations? We are required to stay up to date and be safe and fair to public.
- Think about how you can ethically source your animal products (see below).
The Game Changers References:
The Gladiator Diet
These are the studies cited with regards to vegetarian diets for athletes:
Plant Based Guide for Physicians
Types of Intermittent Fasting
ADF – 25% energy reqs one day, nil restrictions on the next
- Complete alternate-day fasting (or total intermittent energy restriction) – no energy consumed on fast days
- modified alternate-day fasting (or partial intermittent energy restriction) – up to 25% of daily energy needs on fasting days instead of complete fasting.
- Most studies are in this method – mice and human
- 5:2 (Michael Mosely) – not a whole lot of evidence yet, but more emerging
- The 2 Day Diet (Michelle Harvie) – 2 days 500-600Cal then eat & drink normal for rest of week
- 24hr fast
- Valter Longo– 5 day consecutive fast (800Cal/day) then normal for rest of month > evidence for protection against cancer.
- more extreme versions with several days or weeks of fasting.
- During the fasting days, it may be allowed approximately 500 to 600 calories or about 25% of regular daily caloric intake instead of complete fasting.
Time-restricted feeding / TRE – eating only during a certain number of hours each day. Eg 16:8. This schedule is thought to leverage the circadian rhythm.
- Timing – earlier may be better. BF not most important meal of day but BF and lunch better for circadian rhythm and glucose tolerance the next day than lunch + dinner.
Practicalities / sustainability / contraindications
Skin, hair, nails supplements
- Many products on the market that claim to thicken our hair, improve the quality of out skin and strengthen nails.
- Many of these products come with fancy marketing and an expensive price tag!
- Are these supps all they;re cracked up to be? Here’s what the research shows:
What do these supplements usually contain (individual products do very)?
- Hair, skin, and nail supplements commonly contain antioxidants (e.g. vitamins A, C, and E, and/or Coenzyme Q10).
- biotin & B- vitamins can be in there too!
- They can often contain the minerals manganese (helps your body utilize a number of vitamins and selenium (plays an important role in the health of the immune system by reducing oxidative stress), along with fatty acids (fish oil and/or flaxseed oil).
- Deficiencies of these nutrients is uncommon
- Over time, inadequate intake of vitamins A and E and biotin can affect our hair and skin, however this is rare!
- Sadly I’ve seen some really poor quality products (with very fancy marketing) that don’t even contain all of these ingredients.
What does the science say?
- For those with no deficiencies, there’s no good evidence that supplements can make a difference to our hair skin and nails.
- I’m not aware of any robust data suggesting that any supplements can improve the inevitable age-related hair loss, skin elasticity or nail weakening.
What if you are one of those people who have nutritional deficiencies?
- Most people get enough of the nutrients mentioned above through the diet, but in rare cases, a chronic disease and/or medical problem may cause a nutritional deficiencies, which as a result affect your hair, nails, or skin.
- If you’re experiencing hair, skin or nail issues for no clear reason, talk with your doctor and request a blood test .
- Supplements can often contain heavy metals and other ingredients that aren’t necessarily health promoting. We always recommend food first!
In summary: While nutrition plays a key role in many skin issues, consuming pills specifically to target these without making any other changes to your diet or lifestyle is likely counterintuitive – eat a healthy, balanced diet and save your pennies!
Vitamin A and skin
MUST be fat soluble! Lipophilic. All water sol vitamins won’t be well absorbed.
MUST be small
Vit D – sublingal vit D spray, not yet transdermal
Magnesium – poorly absorbed. Requires sweat glands/hair follicles
Dead cells of the upper skin layer do not contain functional magnesium transporters, which have not yet been identified in detail, magnesium absorption may be possible only at the small area of sweat glands and hair follicles.
Suitable alternative to oral or intramuscular injections at restoring serum B12 levels
The bioavailability of sublingual vitamin B12 appears to be equivalent to oral vitamin B12
Omega 3 fats
How does this impact our skin?
- DHA = structural component of skin and keeps our cell membranes healthy. When the cell membrane is healthy, this means healthy skin – yay!
- EPA has many benefits
- Reduces signs of premature aging.
- May reduce the risk of acne formation.
- Skin hydration.
- Can prevent Hyperkeratosis – thickening of skin
- Omega-3s can protect skin from the UV rays emitted from the sun.
- EPA in particular can help your body retain skin collagen after sun exposure
Eggs and cholesterol
Let’s take it back, what is cholesterol?
- Cholesterol is a fat-like substance that is produced by our bodies and also found in food.
- Our bodies need cholesterol to function properly. e.g, cholesterol is used to build cell walls and hormone production.
- About three quarters of cholesterol in the body is produced by your liver and the rest comes from the foods we consume.
- Cholesterol is carried in the blood by lipoprotein as Lauren discussed last week. The main types of lipoproteins are high-density lipoprotein (HDL) and low-density lipoprotein (LDL). Obviously we want more of the good stuff (HDL) and less of the bad stuff (LDL)
Where’s the research at?
- Research has shown that dietary cholesterol does not significantly impact cholesterol levels in your body.
- Data from population studies showed a limited association between dietary cholesterol and heart disease in the general population.
- Healthy foods that contain cholesterol (e.g. eggs, fish, shellfish, yoghurt) can be protective against heart disease and high cholesterol.
- The cholesterol found in eggs has little effect on your blood cholesterol levels.
- Cholesterol levels influenced by saturated and trans fats.
- Choose healthy sides to accompany you eggs, e.g. a slice of wholegrain rather than white bread and limit your intake of bacon.
- If bacon is your side of choice to accompany your eggs, the bacon will likely have more of an impact on you blood cholesterol than the eggs! We encourage you to try some vegetable based sides, e.g. spinach, tomato, avocado, mushrooms or beans!
What is important to note is a small number of people are sensitive to eating dietary cholesterol that is naturally found in food. Therefore when they eat cholesterol rich foods, their LDL (not so good) cholesterol levels may increase.
Recommendation: 7 eggs per week.
Which foods will increase blood cholesterol?
The research suggests that processed foods which are high in saturated or trans fats will increase our blood cholesterol levels.
I was reading a large study in The American Journal of Clinical Nutrition, which followed over 300,000 people for 4–10 years. The subjects modified the type of fats consumed. Those who reduced their saturated fat intake by ~5% and selected polyunsaturated fats had lower rates of coronary illness or coronary related deaths.
Moral of the story: with a baseline healthy diet eggs are an excellent source of healthy fats and protein!
Pick your drink
G+T = up to 3 slices bread (short glass ~715kJ, 250ml tonic = 840kJ) = 14% daily energy needs.(7 = 100%)
Gin and soda = 1 slice bread (415kJ)
Cider = up to 4 slice bread
Cocktail – up to 5 slice bread
Dry wine, champagne, spirit = 1 slice bread
Beer = 2.5 slice bread
- Spirit + soda
- Dry wine
You know the drill
- Stay hydrated – 1 for 1
- Get a long glass if it’s soda, short glass if it’s soft drink
- Line your stomach → About 20 percent of the alcohol consumed is absorbed in the stomach, and about 80 percent is absorbed in the small intestine
Bone broth? Do we need it?
- These days, bone broths are being hailed as a new cure-all regarding gut health, skin, immune system and joint relief.
- There are many testimonials to support this soups benefits— e.g. as wrinkle removers, gut bacteria boosters, bone builders and immune enhancers
- Unfortunately, the science doesn’t quite back it up!
- What is interesting is bone broth is something we have always had in my culture, my Omi makes the most delicious chicken soup and all these years we thought nothing of it (other than how delicious it was)!
What is bone broth?
- Usually made with chicken stock or beef stock, but can be made with pork and fish. The soup bases made by simmering the bones with added spices and vegetables, often for as long as two days.
- Bone broth is a fairly good source of protein and often contains ~ 6-12 grams a cup.
Where’s the evidence at?
Claims with some support:
Small studies which have found benefits on consuming chicken broth:
- Chicken soup & mucous secretion. There is research to suggest that consuming hot chicken soup can help to loosen and clear secretions – study from 1978 and we have spoken about this in previous podcast.
- Chicken soup & inflammation. Laboratory studies that found chicken soup inhibits the activity of neutrophils (white blood cells). However, this evidence is not overly strong
Both small studies but some evidence nonetheless
Claims with no support:
- Bone broths & joint pain. Arthritis can occur as a result of collagen loss. Whilst bone broth contains collagen, dietary collagen isn’t necessarily absorbed and directed straight into your joints.
- Bone broths & skin firming/elasticity. Claim also based on collagen, which forms a layer of tissue to support our skin. Just as dietary collagen isn’t transported directly to the joints, it isn’t taken necessarily directed to our skin either.
- Bone broths & digestion. Bone broths contain gelatin, which has claims to support and improve digestion. Again another claim with little evidence
- Bone broths & bones. Whilst the soup is made from bone, this doesn’t mean it will build bone or strengthen the bones in our bodies. The animals bones in the soup release very little calcium into the broth, despite being simmered for many hours/days
- All bone broths are made differently – no consistency with products, therefore very difficult to test.
The bottom line: If you enjoy it, drink it or use it as a base for your soups, there is absolutely no harm. However it is not the cure-all it’s claimed to be! Save you $$ from the health food stores.
Coffee and pregnancy
Exercise caution. Over 200-300mg caffiene per day increasing risk of miscarriage and low birth weight
- Decaf safe -3mg caffeine per tsp – hard to overdo!
- 1 Tsp of instant – 60mg per tsp
- Espresso shot (30-35ml) – 90mg but anywhere up to 200mg
- Percolated – 100mg per cup
- Energy drinks – up to 110mg per serve
- Cola – 40mg per serve
- Black Tea – 50mg
- Green tea – 30mg
- Chocolate – 60g of milk or dark Choc has about 30-40mg
Pregnant women can safely have two instant coffees a day and two to three cups of tea OR one cap/latte
Apple Cider Vinegar
Chocolate and acne
- Researchers has found that high glycemic index foods (think white bread, lollies, cakes, biscuits and soft drink) may make acne worse.
- On the contrary, a diet rich in low GI carbs, which includes wholegrain breads and cereals, legumes, fruits, vegetables has been found to improve acne.
- Much more research needs to be done though, as the info we have is still early days
- Good news for all you chocolate lovers: There is no evidence to support the claim that chocolate causes acne.
- There is data to show that dark chocolate (which is rich in antioxidants) can be good for our skin. However, everything in moderation!
- For some individuals, dairy products can trigger acne.
- There have been studies which have shown a link between acne severity and consumption of dairy products.
- It’s still farfetched to say that dairy causes acne, and avoiding dairy probably won’t cause acne to disappear. However, if you consume large volumes of dairy and experience acne, you may want to cut back on the dairy for a while and see if it has any effect on your skin.
- Acne development is very complex and it’s highly unlikely that just changing one aspect of your diet is going to completely irradicate ones acne.
Animal-based iron sources
|Food||Serving size||Iron content|
Plant-based iron sources
|Food||Serving size||Iron content|
|All Bran TM||30g||3.2mg|
|Kidney beans||1 cup||3.1mg|
|Green lentils||1 cup||3.0mg|
|Cooked wholemeal pasta||140g (1 cup)||2.3mg|
|Cashew nuts||30g (20 nuts)||1.5mg|
|Raw spinach||1 cup||1.2mg|
|Dried apricot||30g (5 dried apricots)||0.93mg|
|Cooked brown rice||140g (1 cup)||0.7mg|
|Wholegrain bread||1 slice||0.4mg|
How much iron do I need?
|Age||Recommended Daily Intake1|
|All 1-3 years||9mg per day|
|All 4-8||10mg per day|
|Girls 9-13||8mg per day|
|Girls 14–18||15mg per day|
|Boys 9-13||8mg per day|
|Boys 14–18||11mg per day|
|Females 19–50||18mg per day|
|Female 51+||8mg per day|
|Males 19+||8mg per day|
|Pregnant & lactating women||Recommended Daily Intake1|
|All pregnant women||27mg per day|
|Lactating women, 14–18 years||10mg per day|
|Lactating women, 19–30||9mg per day|
Functional signs of Fe def:
– Redced physical work capacity,
– Delayed psychomotor development in infants,
– Impaired cognitive function
– Dizziness, headaches,
– Tmpaired immunity
– Challenges in pregnancy
– Tongue and mouth sores
– Pica (the compulsion to eat nonfood items, such as paper or ice chips)
– Get your serum Fe levels checked – measure the stores, the transporters and the saturation of the Fe on the transporters. A haemoglobin level might also be taken if there is suspicion of blood loss.
Tips to enhance absorption
– Eat foods high in vitamin C or citric acid with foods that contain iron.
– If possible or plausible, separate the intake of Fe rich foods with phytate rich foods such as whole grains, cereals, soy, nuts and legumes
– Cook your plant foods to improve the amount of available iron
– Avoid having tea, coffee or calcium during or directly after having a source of iron – if you’re taking supplements, split them up!
– Ensure that you only take iron supplements under the advice of a medical prof, as too much iron can also be harmful.
Butter vs Marg
Dairy and mucous
- Mucus is produced by cells in the nose and lungs. It consists of salt, water and various proteins which help to trap germs. SO there is very good reason that we produce mucous, even though it’s not overly pleasant.
- Antibacterial enzymes and proteins within mucous (called antibodies), recognise the germs so they can be removed by our immune system and protect us from further infection.
- Mucous actually helps us to remove the infection from our body.
- As it stands there is currently no evidence to suggest that dairy increases mucus production and delays recovery.
- Some people report that dairy can make their phlegm seem thicker, however it doesn’t cause the body to increase phlegm production.
- Do what makes your feel best! Listen to your body.
- Dairy is a rich source of protein and contains a number of vitamins and minerals that may be immune boosting. Therefore, if you enjoy dairy, there is absolutely no reason to cut it out when you’re sick.
Soy and hormones
Probiotics vs Prebiotics
- Prunes = dried plums
- 1 cup prunes = 12g fibre = almost half daily fibre req (25-30g per day)
- 3 prunes = 4g fibre
- 100g prunes = 7.8g fibre vs 3.8g in broc vs 2.4g in apple
- Almost equal parts soluble and insoluble fibre which means it not only adds bulk to the stool to help you create something to pass in the first place, but the soluble fibre helps absorb fluid to create a formed stool and also feeds our good gut bacteria.
- Prunes are also a good source of sorbitol – a sugar alcohol that occurs naturally in dried fruit but also is commercially manufactured and added to things like diabetic jelly and sugar free gum. It gets fermented by our gut bacteria and draws fluid into the gut to help it, errrr slip out!
- The research suggests that increasing your intake of resistant starch can be beneficial for the bacteria in our intestines as well as for your cells.
- Research has shown that the way you prepare common foods like grains, potatoes, rice and pasta may change their resistant starch content.
- One type of resistant starch is formed when foods are cooled after cooking. A great way to increase the amount of RS in your diet is simply cooking and cooling your carbs.
- Green bananas are also high in RS, however as they ripen and become sweeter, they amount of RS lessens.
- Victorian Era- late 1800s
- Tablet containing parasite egg – hatches and “eats extra calories” in the digestive system
- Possibles side effects: nausea, vomiting, fever, diarrhoea, infection blocked bile ducts, pancreatic ducts, neurological issues (blurred vision, dementia), altered lung + liver failure
Upgrade your health – salad leaves
Best vegan protein for muscle gains
- Need 8g leucine per day spread over meals and snacks (2.5g per serve) – amino acid – building block plus anabolic trigger
- Most leucine rich vegan protein powder = corn protein.
- Leucine rich foods include meat, chicken, fish, nuts & seeds, eggs
- For those who prefer vegan protein, a corn protein isolate has a decent BCAA profile and is an excellent source is leucine. Soy is also another option that is high in leucine.
Celery juice – savvy marketing, early mornings, juicing vs blending and a heightened electricity bill!
The old wives tale ‘starve a fever, feed a cold’ and what to eat when you’ve got a cold versus a flu.
- Dates back to 1954
- People thought that eating would divert energy and resources away from fighting the fever, to the process of digesting your food…and that this would lead to more fever
- When we eat, digestion creates something called the thermic effect of food, or the energy that it takes our bodies to break down our food. This process released a byproduct of heat, which is where this concern might have come from.
- What science has been able to demonstrate is that in fact the opposite is true. Medical research suggests the saying should instead be “feed a cold, feed a fever.”
- When we are unwell with fever or a cold, it requires additional energy to fight the infection. This means our body requires an increase in energy and nutrients to produce the immune cells required to fight the infection.
- These immune cells, immunoglobulins for e.g. are made up of protein
- Other micronutrients, including Zn, selenium, Fe, copper, vits A, C, E, B6 and folate, glutathione (cruciferous veg), bioflavanoids (citrus fruits) are all involved in immune processes and its important to have enough of these through eating a variety of whole foods.
- Colds and flus are caused by viruses
- Intermittent fasting may enhance immune function, but not so useful once you’re already sick
- Starving a fever is of no benefit and may even delay your recovery
- Drink plenty of fluids, rest if you need to, hearty soups such as minestrone, chicken and veg, can help provide nutrients and liquids – killing 2 birds with 1 stone. And the heat can help loosen mucous.
- Listen to your body – eat when you’re hungry but also rest when you need to.
- Some benefit in zinc , olive leaf extract at the first sign of a cold to reduce the severity and duration
Upgrade your health – swap your rice
- Rice itself doesn’t offer much more than carbohydrates and calories so if you have an opportunity to swap it out for something that adds more value we’d encourage you to do so.
- You could swap rice for a grain such as quinoa, barley or freekeh for significantly more protein and fibre; a legume like chickpeas or lentils, or get right amongst it and try some cauliflower rice. If it’s the curry you’re really after then you’re unlikely to miss it.
- And if you just want rice, absolutely use it, keep your serves to the size of your fist. And select basmati rice, wild rice or a rice and quinoa blend to get the glycaemic response down.
Organic versus non organic produce
- Studies on the foods themselves in terms of nutritional content, levels of chemicals and resistant bacteria
- Studies on the health of humans long term
- When we look at organic vs non-organic there may be slightly higher concentrations of antioxidants in organic produce. This is only in general, as organic milk has been found to have lower mineral content, and varies depending on the source.
- When we look at chemicals and pesticide residues, organic produce may reduce exposure to these but important to note that the levels of toxins in non-organic produce is generally well below safe limits
- When we look at health overall, in particular long term health of individuals that eat organic vs non organic produce, the benefits are far less clear.
- No difference in cancer risk (studies of >600,000 women)
- Huge systematic reviews show no difference
- Some studies that report a difference need to be careful of other confounding factors. If we think about the profile of someone who may eat organic – they have chosen to and have the means to do so. In general,this often means they are more likely to be of a higher SES/income, better living environments, higher education level, health conscious therefore choose more fresh produce overall, get regular health check ups and screen for chronic diseases. It’s really difficult to attribute health benefits to the organic produce when there’s a whole bunch of other health-promoting behaviours, environmental and lifestyle factors contributing.
- Bottom line: if you’ve got the means and it’s a priority for you – by all means! If you don’t – just keep aiming for your 5 serves of veggies and wash them well.