Browse the evidence

Butyrate supplementation or increased endogenous production via resistant starch and fiber intake promotes weight management by increasing energy expenditure through AMPK activation and PGC-1α induction, and by reducing energy intake via GLP-1 and PYY secretion.

To leverage butyrate for weight management, focus on increasing your intake of resistant starch and dietary fibers rather than relying solely on supplements. Incorporate foods like cooked-and-cooled potatoes, legumes, and raw bananas into your diet. These substrates feed gut bacteria to produce butyrate, which may help regulate energy expenditure and satiety hormones like GLP-1 and PYY. A clinical trial used 4g of sodium butyrate daily, but dietary modification is the primary natural strategy discussed.

Specific probiotic strains improve gut barrier integrity, reducing gut permeability and systemic endotoxemia caused by intense, prolonged exercise.

If you suffer from GI distress during long or intense workouts, consider a probiotic strain known to support gut barrier function. This may help prevent 'leaky gut' and systemic inflammation associated with heavy training.

Probiotic supplementation does not consistently improve athletic performance metrics (e.g., VO2 max, peak power) across all strains and populations.

Do not take probiotics expecting a direct boost in speed or strength. The evidence for performance enhancement is mixed and strain-specific. Focus on strains with validated health benefits (e.g., immune support) instead.

Crop diversification and livestock ownership in Indian agriculture are positively associated with improved dietary diversity and animal-sourced food consumption, independent of household income.

For rural agricultural households, simply increasing income is not enough to ensure good nutrition. Interventions should encourage growing a wider variety of crops and owning livestock, as these directly increase the availability of diverse foods and milk, improving dietary quality regardless of cash earnings.

COVID-19 lockdowns and associated lifestyle restrictions in the UAE caused significant negative shifts in dietary patterns, physical activity, and psychological well-being, leading to weight gain and increased stress.

During periods of restricted movement or lockdown, prioritize maintaining basic habits over perfection. Focus on home-cooked meals if possible, as the study showed a shift towards homemade meals was common. Incorporate light physical activity even if formal exercise is unavailable, and monitor stress levels, as psychological strain was significantly higher during lockdown.

Increased screen time and sedentary behavior during lockdown are associated with higher rates of weight gain and poor sleep quality.

If you must sit for work or study, try to break up long periods of sitting with short movement breaks. The study found high rates of sedentary behavior and screen time during lockdown, which were linked to weight gain and poor sleep.

Lockdown led to a shift towards 'Western-type' and 'Free Sugars' dietary patterns, characterized by increased consumption of sweets, salty snacks, and energy drinks, and decreased consumption of fruits and vegetables.

Be mindful of your food choices during stressful times. The study found that lockdown often leads to increased consumption of sweets, salty snacks, and sugary drinks, while decreasing fruit and vegetable intake. Try to maintain a balance and prioritize whole foods.

Individuals who exhibit a pattern of frequent transitions between active and inactive states (intermittent activity) have equivalent self-reported cardiovascular disease prevalence to those with higher overall continuous activity, challenging the assumption that total volume is the sole determinant of cardiovascular risk.

You do not need to find long blocks of time to exercise for cardiovascular health. Breaking up your day with frequent short bursts of movement (getting up, walking, moving) may be just as beneficial for your heart as doing one long continuous workout. Focus on changing your state from sitting to moving frequently throughout the day.

Dairy consumption is associated with a reduced risk of hypertension and type 2 diabetes, independent of body weight changes.

Including low-fat dairy in your diet may help lower blood pressure and reduce the risk of type 2 diabetes. This benefit appears to come from nutrients like calcium and bioactive peptides, not just fat content.

Resveratrol supplementation (1500 mg/day) significantly decreases testosterone and dehydroepiandrosterone sulfate levels in women with Polycystic Ovary Syndrome (PCOS).

Women with PCOS may benefit from 1500 mg/day of resveratrol supplementation, which has been shown to significantly reduce excess testosterone and DHEAS levels over 3 months. Consult a doctor before starting.

Among middle-aged female workers, high consumption of confectionary and noodles, and low intake of vegetables and fish are significantly associated with poor sleep quality.

If you are a working woman struggling with sleep, look at your food sources. High intake of sweets (confectionary) and refined carbs (noodles) is linked to worse sleep, while vegetables and fish are linked to better sleep. Also, avoid energy drinks and sugar-sweetened beverages, and try not to skip breakfast or eat irregularly. These changes are easier to implement than trying to force more exercise or sleep directly.

Unhealthy eating habits, specifically consuming energy drinks, sugar-sweetened beverages, skipping breakfast, and eating irregularly, are significantly associated with poor sleep quality.

Your eating schedule matters as much as what you eat. Skipping breakfast, eating irregularly, and drinking energy drinks or sugary sodas are all linked to worse sleep. Try to eat regular meals, including breakfast, and avoid caffeinated energy drinks, especially in the afternoon or evening.

High carbohydrate intake is associated with poor sleep quality, but this effect is likely driven by the source of carbohydrates (confectionary/noodles) rather than total carbohydrate amount.

Don't just count total carbs; look at where they come from. High intake of sweets and noodles is linked to poor sleep, even if total carbs are high. Focus on replacing refined carbs with vegetables and fish.

Ketogenic diets reduce perceived hunger and food intake primarily through hormonal mechanisms, specifically by suppressing the orexigenic hormone ghrelin and maintaining anorexigenic cholecystokinin (CCK) secretion, rather than solely through caloric restriction.

To reduce hunger, try a ketogenic diet with less than 20g of carbs daily. This works by lowering ghrelin (the hunger hormone) and keeping CCK (the fullness hormone) active. Don't confuse this safe state with diabetic ketoacidosis; your blood pH remains normal.

Higher consumption of chocolate is associated with a significant reduction in the risk of developing cardiovascular disease and stroke.

Incorporate moderate amounts of chocolate, preferably dark chocolate with high flavonoid content, into your diet. While chocolate is calorie-dense, observational data suggests it may reduce the risk of heart disease and stroke. To maximize benefits and minimize risks, choose products with lower sugar and fat content and be mindful of portion sizes to avoid weight gain.

Extended home confinement during pandemics causes significant body weight and fat mass gain in adults, primarily driven by energy surplus from increased consumption of energy-dense foods and reduced physical activity.

Home confinement creates a 'perfect storm' for weight gain by increasing access to comfort foods and decreasing activity. To counter this, you must actively recreate structure: schedule your meals and exercise, limit access to energy-dense comfort foods, and find non-food ways to manage stress and boredom. Daily self-weighing is recommended as a tool to monitor and prevent gain.

Late bedtimes and late wake-up times are associated with unfavorable weight status and activity patterns in adolescents, independent of sleep duration.

For adolescents, shifting bedtime and wake time later is linked to higher obesity risk, largely due to increased screen time and reduced physical activity, regardless of total sleep hours. Encouraging earlier bedtimes may help reduce sedentary behavior and improve weight status.

Genetic susceptibility to obesity, measured by polygenic risk scores, is partly mediated by emotional and uncontrolled eating behaviors.

Your genetics may make you more susceptible to emotional eating, but this doesn't mean you are powerless. Focus on managing your environment and behaviors, such as reducing access to energy-dense foods and learning emotion regulation skills, to mitigate genetic risk.

Fermentation of plant-based matrices using exopolysaccharide (EPS)-producing lactic acid bacteria improves the textural properties (viscosity, water-holding capacity) and stability of plant-based yogurt-like products, serving as a clean-label alternative to added hydrocolloids.

To get a creamy, stable plant-based yogurt without added gums, look for products fermented with specific EPS-producing bacteria (like certain strains of Weissella or Lactobacillus). This natural process creates a thicker texture and better mouthfeel than unfermented plant milks.

Fermentation of plant-based matrices reduces anti-nutritional factors (ANF) such as phytic acid and trypsin inhibitors, thereby improving the nutritional value and digestibility of plant proteins.

Choose fermented plant-based foods (like yogurt made from soy, oats, or legumes) over unfermented alternatives. The fermentation process breaks down compounds that block nutrient absorption, making the protein and minerals in plants more usable by your body.

Optimal dietary ratios of omega-6 to omega-3 polyunsaturated fatty acids (specifically 1:1 or 5:1) are more beneficial for lipid metabolism and inflammation than higher ratios (10:1).

To maximize anti-inflammatory benefits, aim for a lower omega-6 to omega-3 ratio in your diet. Research suggests ratios of 1:1 or 5:1 are superior to the typical Western ratio of 10:1 or higher. Achieve this by increasing intake of omega-3 sources (fatty fish, flaxseeds) and reducing high-omega-6 vegetable oils (corn, soybean, sunflower oils).

Metformin administration (up to 2500 mg/day) produces significant weight loss (average 5.8 kg) in non-diabetic obese individuals, with the magnitude of weight loss positively correlated with the degree of baseline insulin resistance.

If you are obese but do not have diabetes, metformin can help you lose weight, especially if you have high insulin resistance. The typical dose is 1500-2500 mg daily, but you must start low (500 mg) and increase it slowly over weeks to avoid stomach upset. This works best if you do not simultaneously try to diet or change your exercise habits, as the drug's metabolic effects are the primary driver.

Micronutrient supplementation alleviates fatigue and improves physical performance in individuals with marginal deficiencies, but does not enhance performance in those with adequate dietary intake.

If you are chronically tired and eat a restricted or poor-quality diet, a multivitamin may help restore your energy levels, but it will not work instantly. You must take it consistently for at least 6 weeks to see benefits. If you already eat a balanced, nutrient-rich diet, adding supplements is unlikely to improve your energy or performance.

Consumption of edible fruits rich in bioactive compounds (polyphenols, vitamins, minerals) delays aging and reduces the risk of age-related chronic diseases by neutralizing reactive oxygen species (ROS) and reducing oxidative stress.

Eat a variety of colorful fruits daily. They contain natural antioxidants like polyphenols and vitamins that fight the cellular damage (oxidative stress) associated with aging and chronic disease. Focus on whole fruits rather than juices to maximize fiber and nutrient benefits.