Browse the evidence

Ultra-processed foods act as significant vectors for 'risk ingredients' (added sugars, sodium, trans-fats, and cosmetic additives), contributing disproportionately to the intake of these harmful components compared to unprocessed foods.

Check labels for added sugars, sodium, and trans-fats. UPFs often contain high levels of these 'risk ingredients' even if they appear healthy (e.g., flavored yogurts, sauces). Reducing UPF intake naturally reduces the intake of these harmful components.

A Western diet high in animal protein, choline, and saturated fat promotes a specific gut microbiome profile (Enterotype 1) characterized by high Bacteroides and low Prevotella, which is associated with increased risk of metabolic diseases.

Adopting a plant-rich diet can shift your gut microbiome away from the 'Western' profile (high Bacteroides, low Prevotella) toward one associated with better metabolic health and higher microbial diversity.

Akkermansia muciniphila supplementation or enrichment improves insulin sensitivity, reduces body weight, and counteracts diet-induced metabolic syndrome in obese or insulin-resistant individuals.

Consider strategies to enrich Akkermansia muciniphila, such as consuming prebiotics like fructooligosaccharides (FOS) or exploring supplementation, to potentially improve insulin sensitivity and manage weight.

Consuming biofortified staple crops (iron beans, pearl millet, orange sweet potato, maize) significantly improves micronutrient status (hemoglobin, serum ferritin, vitamin A stores) in deficient populations compared to conventional crops.

To improve nutrition, incorporate biofortified staple crops like iron beans, pearl millet, or orange sweet potato into your regular diet. These crops are bred to contain higher levels of essential nutrients like iron and vitamin A, helping to prevent deficiencies common in areas with limited dietary diversity. Look for these crops in local markets or grow them if you are a farmer.

Daily supplementation of 400 IU of vitamin D prevents nutritional rickets in children, whereas 800 IU of vitamin D combined with appropriate calcium intake reduces osteoporotic fracture risk in vitamin D-deficient or institutionalized elderly subjects.

If you are an older adult living in care or have low vitamin D levels, take 800 IU of Vitamin D3 daily along with adequate calcium to help protect your bones from fractures. For children, 400 IU daily is the standard to prevent rickets. Do not assume mega-doses work better; very high single doses may actually increase fracture risk.

Exercise-induced skeletal muscle secretion of IL-6 mediates metabolic crosstalk, specifically enhancing glucose uptake and fatty acid oxidation within muscle and stimulating hepatic glucose production during exercise.

Regular exercise triggers your muscles to release IL-6, which helps your muscles use more glucose and fat for energy and signals your liver to release glucose when needed. This hormonal communication is a key reason why exercise improves metabolic health beyond just burning calories.

Exercise-induced secretion of myokines like IL-6, BDNF, Cathepsin B, and Irisin mediates muscle-brain crosstalk, promoting hippocampal neurogenesis, cognitive function, and potentially protecting against neurodegenerative diseases.

Exercise helps your brain by releasing factors like BDNF and Cathepsin B that support new neuron growth and cognitive function. This is particularly important for maintaining mental sharpness and potentially reducing the risk of dementia as you age.

Exercise-induced myokines, particularly IL-6, mediate muscle-adipose crosstalk by promoting lipolysis, fat oxidation, and potentially the browning of white adipose tissue, thereby reducing visceral adiposity.

Exercise helps you lose fat by triggering your muscles to release IL-6, which directly stimulates fat breakdown and oxidation. This hormonal signal is crucial for reducing visceral fat, especially when combined with a healthy diet.

Intestinal barrier disruption (leaky gut) allows translocation of bacterial endotoxins like LPS into circulation, driving systemic low-grade inflammation and contributing to metabolic and autoimmune diseases.

Maintaining gut barrier integrity through a diverse, fiber-rich diet supports the production of short-chain fatty acids (SCFAs) and healthy microbiota, which are critical for preventing the translocation of inflammatory bacterial components like LPS. This is a foundational aspect of metabolic and immune health, not just digestive comfort.

Genetic variants near the NKX6.3 gene (specifically rs6981587) are associated with the degree of weight loss in response to low-caloric diet interventions, with the major C allele linked to decreased weight loss efficacy.

If you are struggling with weight loss despite strict adherence to a low-calorie diet, genetic factors near the NKX6.3 gene may be influencing your response. This is not a failure of willpower but a biological variance. Consider genetic counseling or personalized nutrition approaches that account for this variability, rather than assuming standard protocols will work identically for everyone.

Consumers infer product 'cleanliness' and health benefits primarily through peripheral cues on front-of-pack labels (e.g., organic logos, 'free-from' claims, short ingredient lists) rather than central processing of back-of-pack nutritional data.

When evaluating 'clean label' products, do not rely solely on front-of-pack claims like 'organic' or 'free-from'. These are often marketing heuristics. To truly assess healthfulness, you must inspect the back-of-pack ingredient list and nutrition facts, as consumers often overestimate the health benefits of products with these labels due to 'halo effects'.

Sleep quality and duration directly regulate glymphatic system efficiency, which clears neurotoxic protein waste (amyloid-beta, tau, alpha-synuclein) from the brain; age-related decline in deep NREM sleep reduces this clearance, contributing to protein aggregation and dementia risk.

Prioritize sleep quality and duration as a non-negotiable component of brain health. Focus on achieving deep NREM sleep, which is critical for glymphatic clearance. If you are aging, be aware that sleep fragmentation increases, so strategies to improve sleep hygiene and cardiovascular health (which drives the fluid flow) are essential to maintain cognitive function and reduce dementia risk.

Individuals with metabolically healthy obesity (MHO) have a higher risk of cardiovascular disease and all-cause mortality compared to metabolically healthy lean individuals, despite having a lower risk than those with metabolically unhealthy obesity.

If you have obesity but normal blood work, you are not 'safe' like a lean person. Your risk for heart disease and early death is still higher than someone with a healthy weight. You should not ignore your weight, but you may prioritize preserving your current metabolic health over aggressive weight loss if it causes stress or muscle loss, while still addressing lifestyle factors like fitness and diet quality.

Higher consumption of ultra-processed foods is associated with a significantly increased risk of overall cancer and breast cancer.

This large-scale study indicates that increasing your intake of ultra-processed foods (like sugary drinks, packaged snacks, and processed meats) by 10% of your total diet is linked to a 12% higher risk of developing cancer and an 11% higher risk of breast cancer. To mitigate this risk, consider reducing the proportion of ultra-processed items in your diet and replacing them with less processed alternatives, as the specific processing artifacts and additives in these foods appear to contribute to cancer risk independent of basic nutritional content.

Higher body mass index (BMI) causally increases the risk of type-2 diabetes (T2D), with a 1 SD increase in BMI resulting in a 3.29-fold increase in T2D risk.

Maintaining a healthy BMI is one of the most effective ways to prevent type-2 diabetes. This study confirms that higher BMI directly causes a significantly higher risk of developing T2D. Focus on sustainable weight management through diet and physical activity to lower this risk.

Dietary polyphenols reduce the risk of cardiovascular diseases (CVDs) by inhibiting LDL oxidation, preventing platelet aggregation, and improving endothelial function through nitric oxide signaling.

Include polyphenol-rich foods like tea, coffee, berries, and dark chocolate in your diet to support heart health. These foods help protect LDL from oxidation and improve blood vessel function, reducing cardiovascular risk.

Chronic low-grade inflammation (inflammaging) is a key driver of sarcopenia, contributing to muscle protein breakdown and functional decline.

Managing chronic inflammation through lifestyle (diet, stress reduction) may help preserve muscle mass in older adults, in addition to resistance training.

Marine n-3 supplementation may offer greater cardiovascular benefits for Black participants and those with low fish consumption.

If you are Black or eat very little fish, you might get more cardiovascular benefit from fish oil supplements than the average person. However, this is a hypothesis-generating finding and not definitive.

Adherence to a Mediterranean diet (MedDiet) in older adults (65-79 years) modulates the gut microbiome to increase beneficial taxa (e.g., Faecalibacterium prausnitzii, Roseburia) and decrease harmful taxa, which is associated with reduced frailty, lower inflammation, and improved cognitive function.

For adults over 65, adopting a Mediterranean-style diet rich in vegetables, legumes, fruits, nuts, olive oil, and fish, while limiting red meat and saturated fats, can positively alter gut bacteria. This shift is linked to reduced inflammation, better cognitive function, and lower risk of frailty. Consistency over a year is key, and including a Vitamin D supplement (as per the study's guidelines) may support this process.

Autophagy is a double-edged sword in muscle health: it is essential for removing damaged components and preventing degeneration, but its hyperactivation contributes to muscle loss in pathological conditions.

Autophagy is your muscle's recycling system. It is essential for removing damaged parts and maintaining health. However, in states of severe stress or disease, this system can become overactive and break down muscle faster than it can be replaced. Balancing this system is key to maintaining muscle mass.

Adequate dietary selenium intake is essential for optimal immune function, particularly enhancing T-cell proliferation, NK cell activity, and antibody responses, with the strongest benefits observed when correcting selenium deficiency rather than supplementing already sufficient levels.

If you live in a region with low soil selenium (parts of China, Europe, NZ) or have dietary restrictions, getting enough selenium (55-75 mcg/day) is crucial for a robust immune system, especially as you age. However, if you already eat a varied diet with Brazil nuts, seafood, or meat, extra selenium supplements likely offer no additional immune benefit and may carry risks. Focus on food sources first.

Non-fasting (postprandial) triglyceride levels are a significant and often neglected risk factor for premature ASCVD, as the postprandial state is the norm for most of the day and involves the accumulation of atherogenic remnant particles.

Your heart disease risk is not just determined by how you feel after an overnight fast. The hours after you eat, when fat particles are circulating, contribute significantly to plaque buildup. If you have high triglycerides, your non-fasting levels are likely even higher and more dangerous.

GLP-1 receptor agonists promote long-term weight loss by reducing appetite and food intake, primarily through effects on the hypothalamus.

GLP-1 receptor agonists help with weight loss by reducing hunger and the amount of food consumed. This effect is mediated by the brain's hypothalamus. Patients may experience reduced appetite as a primary mechanism for weight management.

Adherence to a healthy dietary pattern, specifically the Mediterranean diet or a low Dietary Inflammatory Index (DII), is associated with a reduced risk of incident depression in longitudinal observational studies.

To lower your risk of depression, focus on adopting a Mediterranean-style diet or minimizing pro-inflammatory foods. This involves eating plenty of fruits, vegetables, whole grains, legumes, nuts, and olive oil, while limiting red meat, processed foods, and sugar. The evidence suggests that maintaining this pattern over time is associated with a significantly lower risk of developing depression.