Browse the evidence

The cardiovascular benefits of soy isoflavones, particularly regarding blood pressure and inflammation, are conditional on the individual's ability to metabolize daidzein into equol via gut microbiota.

If you eat soy and see no heart health benefits, you might be a 'non-producer' of equol. This is determined by your gut bacteria. While soy is still healthy, its specific blood-pressure-lowering power is mostly reserved for those who can convert it to equol.

Interpretive front-of-package labels (Nutri-Score, Multiple Traffic Lights, Health Star Rating, Warning symbol) significantly improve consumers' objective ability to rank food products by nutritional quality compared to no label, with summary graded labels (Nutri-Score) outperforming nutrient-specific numeric labels (Reference Intakes).

Choose products with interpretive front-of-package labels (like Nutri-Score or Traffic Lights) over those with only numeric Reference Intakes. These labels make it significantly easier to correctly identify healthier options, especially for complex items like cakes and cereals. The summary graded design (e.g., A-E scale) is more effective than raw nutrient data.

The AMPKα1 isoform plays a critical role in stimulating anabolism and regulating satellite cell dynamics during muscle regeneration, distinct from the catabolic role of AMPKα2.

Muscle repair after injury relies on specific molecular signals (AMPKα1) that are different from those that limit growth during stress. While general AMPK activation can hinder growth, the specific activation of the α1 isoform is necessary for stem cells to repair damage. This suggests that recovery protocols should support, not suppress, this specific signaling pathway.

Higher gut microbiome diversity is associated with lower levels of very-low-density lipoprotein (VLDL) particles, serum triglycerides, and total fatty acids, and higher levels of large/high-density lipoprotein (HDL) particles.

Focus on dietary patterns that support gut microbial diversity, such as high fiber intake and fermented foods, as this state is strongly linked to healthier lipid profiles (lower triglycerides, higher protective HDL).

Specific gut microbial taxa, particularly Christensenellaceae and Ruminococcaceae, are associated with favorable lipid profiles, including lower VLDL and triglycerides and higher large HDL particles.

Dietary diversity is key. Consuming a wide variety of plant fibers supports the growth of beneficial taxa like Christensenellaceae, which are linked to better lipid management.

Direct supplementation with Urolithin A (Uro-A) bypasses gut microbiota variability to achieve significantly higher plasma concentrations than consuming ellagitannin-rich foods like pomegranate juice.

If you consume pomegranates or walnuts, your body must convert them into Urolithin A using gut bacteria. Not everyone does this efficiently. If you want guaranteed high levels of Urolithin A (e.g., for anti-inflammatory or metabolic benefits), direct Uro-A supplementation is significantly more effective than relying on food sources alone.

Specific probiotic strains reduce the frequency, severity, and duration of upper respiratory tract infections (URTI) in athletes, particularly under conditions of high training load or environmental stress.

If you are an athlete prone to colds, look for a probiotic with a specific strain that has been studied for immune health (e.g., Lactobacillus rhamnosus GG). Do not buy generic 'probiotic' blends without strain identification. Ensure the product lists the specific genus, species, and strain on the label.

Athletes have distinct gut microbiota compositions compared to sedentary individuals, characterized by higher diversity and abundance of health-promoting bacteria, influenced by exercise and protein intake.

Regular exercise and a diet high in protein and fiber can positively shape your gut microbiota, increasing diversity and beneficial bacteria. This is a natural way to support gut health.

Actigraphy provides a valid, cost-effective, and less invasive alternative to polysomnography (PSG) for estimating sleep parameters in population-based epidemiological studies, with agreement rates of 91-93% in adults.

For tracking sleep in real-world settings, use an actigraphy device (wrist-worn accelerometer). It is a validated, non-invasive, and cost-effective method to estimate sleep duration and efficiency, especially when studying large groups or long-term patterns where lab-based PSG is impossible.

Sleep scoring algorithms (e.g., Cole-Kripke, UCSD, Sadeh) convert wrist movement data into sleep/wake scores using weighted activity counts, but these algorithms can misclassify quiet wakefulness as sleep, leading to inaccurate sleep onset latency estimates.

When using actigraphy, be aware that standard algorithms may mistake quiet wakefulness for sleep, potentially underestimating how long it takes to fall asleep (Sleep Onset Latency). For more accurate SOL, consider using sleep diaries or event markers to supplement the device data.

Using sleep diaries or event markers to define Time in Bed (TIB) and Sleep Period (SLP) significantly improves the accuracy of actigraphy-derived sleep parameters compared to using algorithm-defined boundaries alone.

To get the most accurate sleep data from your actigraphy device, use the event marker button or a sleep diary to log when you get in bed, turn off the lights, and get up. This helps the device distinguish between 'time in bed' and 'actual sleep time,' correcting for errors in sleep latency and efficiency calculations.

Gut microbiota composition and microbial metabolites, specifically Trimethylamine N-oxide (TMAO), directly contribute to the pathogenesis of metabolic syndrome by promoting insulin resistance and atherosclerosis.

Your gut bacteria turn certain nutrients (like those in red meat and eggs) into a compound called TMAO, which harms your heart and insulin sensitivity. You can mitigate this by improving your gut health through fiber-rich foods (prebiotics), fermented foods (probiotics), or discussing microbiome-targeted therapies with your doctor, rather than simply cutting out healthy foods.

PPARγ agonist pioglitazone significantly reduces the risk of major cardiovascular events (stroke and myocardial infarction) in patients with type 2 diabetes and high cardiovascular risk, including those with prediabetes.

If you have type 2 diabetes and are at high risk for heart issues, ask your doctor about pioglitazone. It has been shown in multiple studies to significantly lower the risk of stroke and heart attack, even in people with prediabetes. While it can cause side effects like weight gain or swelling, the cardiovascular protection it offers is substantial for high-risk individuals.

PPARα agonists (fibrates) significantly reduce cardiovascular events and myocardial infarction in subjects without existing cardiovascular disease, making them effective for primary prevention.

If you have high triglycerides or dyslipidemia but no heart disease, ask your doctor if a fibrate like fenofibrate or bezafibrate is right for you. Studies show these drugs can significantly reduce your risk of heart attacks and other cardiovascular events, offering protection beyond just lowering cholesterol.

Polyunsaturated fatty acids (PUFAs) from olive oil, nuts, and seeds improve glycemic control and insulin sensitivity by stimulating GLP-1 secretion and reducing adipose inflammation.

Replace saturated and trans fats with unsaturated fats from olive oil, nuts, and seeds. This substitution can significantly reduce the risk of Type 2 Diabetes and improve insulin sensitivity, provided total fat intake remains moderate (below 37% of energy).

Loss of the zinc transporter ZIP13 promotes the biogenesis of beige adipocytes and increases energy expenditure, conferring resistance to high-fat diet-induced obesity and improving glucose tolerance.

While you cannot directly 'take' a ZIP13 inhibitor, this research highlights that increasing beige fat activity (through cold exposure or exercise) may improve metabolic health. The paper suggests that targeting the molecular identity of fat cells is a promising future treatment for obesity.

High sugar intake is associated with increased risk of dental caries, overweight, and cardio-metabolic risk factors, although the direct causal link to body adiposity may be mediated by total energy intake rather than sugar itself.

Reducing sugar intake is a valid strategy for improving health, particularly for dental health and metabolic markers like blood pressure and lipids. However, for weight management, the key factor is total energy intake. Replacing sugar with other carbohydrates without reducing overall calories will not lead to weight loss. Prioritize reducing high-calorie sweet products and beverages to lower total energy intake.

Emotional eating mediates the relationship between depression and subsequent weight gain in adults, acting as a behavioral mechanism linking negative affect to obesity.

If you tend to eat more when stressed or depressed, recognize that this is a learned coping mechanism, not a character flaw. Focus on building alternative emotion regulation skills, such as mindfulness or cognitive behavioral techniques, to manage distress without turning to food.

Short sleep duration (≤7 hours) interacts with high emotional eating to significantly increase the risk of weight gain and BMI increase in adults.

If you are prone to emotional eating, prioritize getting at least 7-9 hours of sleep. Short sleep combined with emotional eating significantly increases your risk of weight gain. Improving sleep hygiene may help mitigate this risk.

For older men, total volume of physical activity (including light intensity) is the primary determinant of all-cause mortality reduction, whereas the pattern of accumulation (specifically meeting the 150-minute weekly guideline in bouts of ≥10 minutes) provides no additional mortality benefit.

If you are an older adult, you do not need to worry about finding uninterrupted 10-minute blocks of exercise to protect your heart and lifespan. The total amount of time you spend moving—whether it's light gardening, walking to the store, or short bursts of activity throughout the day—is what matters most. Focus on increasing your total daily movement volume rather than stressing over whether your activity is 'continuous' or 'bouted'.

Intensive insulin therapy in Type 1 Diabetes causes significant weight gain, which subsequently increases the risk of cardiovascular disease and metabolic complications.

If you have Type 1 Diabetes, intensive insulin therapy is necessary for survival and complication prevention, but it will likely cause weight gain. Do not restrict insulin to control weight, as this leads to dangerous hyperglycemia and increased mortality. Instead, work with your care team to manage weight through lifestyle adjustments and potentially adjunctive therapies that do not compromise glycemic control.

Heart-rate variability (HRV) serves as a valid biomarker for assessing the physiological and psychological health impacts of dietary interventions, with higher HRV indicating better autonomic regulation and resilience.

Use HRV as a key indicator of how your diet affects your overall health and stress resilience. Higher HRV is generally associated with better health outcomes, including lower risk of cardiovascular disease, diabetes, and psychiatric disorders. While more research is needed on specific foods, maintaining a diet that supports high HRV (e.g., Mediterranean diet, omega-3s) is a valid strategy for improving long-term physiological and psychological well-being.

Genetically predicted accelerometer-assessed physical activity causally decreases the risk of COVID-19 hospitalization.

Prioritize physical activity measured by devices (accelerometers) over self-reported estimates, as it is causally linked to reduced COVID-19 hospitalization risk. While the effect size is modest, combining this with reduced leisure sedentary time (like TV watching) may offer better protection.

The Triglyceride-Glucose (TyG) index provides accurate discrimination of prediabetes and diabetes, performing comparably to the gold-standard HOMA-IR marker, particularly in women and individuals under 65 years of age.

If you are concerned about prediabetes, ask your doctor to calculate your Triglyceride-Glucose (TyG) index using your standard fasting glucose and triglyceride levels. This index is a reliable, low-cost screening tool for insulin resistance and diabetes risk, especially for women and those under 65, potentially saving you the cost and discomfort of an oral glucose tolerance test.