Browse the evidence

Dietary interventions during pregnancy significantly reduce maternal gestational weight gain and lower the risk of pre-eclampsia, gestational diabetes, and preterm delivery compared to control groups.

Adopt a balanced diet focusing on whole grains, fruits, vegetables, and lean proteins while limiting fat to 30% of calories. This approach, managed by dietetic professionals, effectively reduces excessive weight gain and lowers risks of serious pregnancy complications like pre-eclampsia and gestational diabetes without harming the baby's growth.

Adequate protein intake (≥0.8 g/kg body weight) is essential for optimal antibody production and immune cell function, whereas very low protein status increases infection risk and mortality.

Ensure you are eating at least 0.8 grams of protein per kilogram of body weight daily. This amount is necessary to produce antibodies and support immune cells. If you are elderly or recovering from illness, you may benefit from slightly higher intake, but do not neglect protein as a basic immune defense.

Maintaining or increasing physical activity and limiting screen time increases during abrupt societal changes (such as pandemic restrictions) mitigates negative mental health consequences, including depression, anxiety, and loneliness.

If you are facing restrictions that make your normal routine impossible, prioritize keeping up your physical activity levels and limit non-essential screen time. The study shows that dropping your activity level or increasing screen time is strongly linked to worse mental health, including higher depression and anxiety. You can maintain activity through home-based exercises or telehealth guidance even if you are isolated.

Resistance exercise is the most effective intervention for slowing age-related loss of skeletal muscle mass.

To keep your muscles from shrinking as you age, you must engage in resistance exercise. It is the most effective tool available for this specific purpose.

Physical inactivity is a primary driver of muscle mass and strength loss, making physical activity a protective factor against sarcopenia.

Staying physically active is your best defense against losing muscle as you get older. Inactivity directly correlates with muscle loss.

Adequate nutrition, specifically sufficient energy and protein intake, is a necessary first step in the management of sarcopenia and clinical frailty.

Before or alongside exercise, ensure you are eating enough energy and protein. This is the first step in managing sarcopenia.

Using a smartphone application for self-monitoring of diet and physical activity significantly increases adherence to weight loss interventions compared to website-based or paper diary methods, resulting in greater mean weight loss over a 6-month period.

To lose more weight, use a smartphone app for daily food and activity logging instead of a paper diary or website. The app's convenience, instant feedback, and text message reminders help you stick with the habit longer, which directly leads to greater weight loss over 6 months.

Timing protein intake immediately after exercise (within 30-60 minutes) maximizes muscle protein synthesis compared to delaying intake by 3 hours.

Try to eat protein within 30-60 minutes after your workout to maximize muscle building. However, do not stress if you miss this window; your total daily protein intake is much more important for long-term results.

Low-intensity walk training (approx. 20% VO2max) combined with restricted venous blood flow (Kaatsu) induces significant muscle hypertrophy and strength gains in young men, whereas identical walking without blood flow restriction produces no changes.

If you cannot perform heavy resistance training, combining walking with blood flow restriction (using specialized cuffs) may stimulate muscle growth. This protocol involves walking at a slow pace (50 m/min) for short bouts (2 minutes) with rest periods, while wearing occlusion cuffs on the legs. This was shown to increase muscle size and strength in young men over 3 weeks, likely due to metabolic stress rather than mechanical load.

A structured, multi-modal weight loss program combining dietary advice, exercise, and behavioral support significantly improves ovulation and spontaneous pregnancy rates in anovulatory obese women compared to no intervention.

For obese women struggling with infertility, a structured 6-month program focusing on gradual weight loss through diet, exercise, and behavioral support can restore ovulation and enable spontaneous pregnancy. This approach is cost-effective and avoids the risks of multiple pregnancies associated with fertility drugs. It is recommended as a first-line step before pursuing invasive medical treatments like IVF.

Extending nocturnal sleep to 10 hours per night for 5-7 weeks significantly improves specific athletic performance metrics, including sprint speed and shooting accuracy, in collegiate basketball players.

If you are an athlete, try adding 1-2 hours of sleep to your night for at least 5 weeks. Aim for 10 hours in bed. You should see faster sprint times and better shooting accuracy. This is not about sleeping in lazily; it is about giving your body the recovery time it needs to perform at its peak.

Regular physical activity improves maximum aerobic power (cardiorespiratory fitness) by 10-20% in average urban city-dwellers, bringing their performance levels closer to those observed in circumpolar Scandinavian populations.

Engage in regular physical activity to boost your aerobic fitness. While specific protocols aren't detailed here, the goal is to improve your maximum oxygen intake by 10-20%. This brings your fitness closer to optimal levels seen in active populations. Start now, as the activity is likely beneficial and pleasant, rather than waiting for perfect scientific certainty.

Intentional weight loss in overweight individuals with type 2 diabetes is associated with a significant reduction in total mortality and cardiovascular disease mortality.

If you have type 2 diabetes and are overweight, aiming for a moderate, intentional weight loss of 20-30 pounds is associated with significantly lower risk of death from heart disease or diabetes. Avoid extreme weight loss (over 70 pounds) as it may carry higher risks. Focus on sustainable, intentional changes rather than rapid or unexplained weight changes.

Energy-restricted very low-carbohydrate ketogenic (VLCK) diets produce greater total fat loss and trunk fat loss than low-fat (LF) diets in overweight men and women, with a more pronounced effect in men.

If you are overweight and want to maximize fat loss, especially abdominal fat, a very low-carbohydrate diet (under 10% carbs) is likely more effective than a standard low-fat diet, even if you eat slightly more calories. This benefit is strongest in men but also present in women. Monitor your ketones to ensure you are in the target range.

A structured very-low-calorie ketogenic diet (VLCKD) administered for 17-19 weeks effectively reverses insufficient weight loss and weight regain in post-bariatric surgery patients, achieving significant fat mass reduction while preserving muscular strength and metabolic health.

If you have had bariatric surgery but haven't lost enough weight or have regained it, a structured Very-Low-Calorie Ketogenic Diet (VLCKD) is a viable, safe, and effective option. The protocol involves a strict 6-week active phase (approx. 600 kcal, very low carb, high protein), followed by a gradual re-introduction of foods over 13 more weeks. Crucially, you must continue your prescribed post-surgical vitamin and mineral supplements to avoid deficiencies. This approach can help you lose significant fat while keeping your muscle strength, without harming your liver or kidneys, provided you are not diabetic or have other severe comorbidities.

Modifying the campus food environment to make healthy foods more accessible, affordable, and appealing significantly increases the consumption of healthy foods among university students.

If you are a university administrator or facility manager, prioritize placing healthy, affordable options in high-traffic areas (cafeterias, vending machines). Remove barriers like high cost or lack of availability for healthy items. If you are a student, recognize that your environment dictates your choices more than your knowledge; choose living situations or study spots that make healthy food the path of least resistance.

Moderate weight loss (>5% body weight) via long-term calorie restriction (1000 kcal/day) improves endocrine and ovarian function in obese women with PCOS, evidenced by increased SHBG, decreased free testosterone, and restored menstrual regularity.

For obese women with PCOS, achieving a modest weight loss of just over 5% through a sustained, moderate calorie-restricted diet (around 1000 kcal/day) can significantly improve hormonal balance (increasing SHBG, lowering free testosterone) and restore regular menstrual cycles and fertility, without needing to reach an 'ideal' BMI.

A strict low-carbohydrate diet improves glycemic control and insulin sensitivity in obese patients with type 2 diabetes within two weeks.

For type 2 diabetics, cutting carbs to ~20g/day for two weeks can significantly improve how your body handles insulin and lowers blood sugar. This improvement happens quickly, often allowing for reduced medication doses under medical supervision. This suggests that managing carb intake is a powerful tool for controlling diabetes, potentially more so than just weight loss alone.

High-Intensity Intermittent Exercise (HIIE) produces greater reductions in subcutaneous and abdominal fat compared to steady-state aerobic exercise when exercise volume is equated, particularly in overweight or obese populations.

If you are overweight or have metabolic issues, try High-Intensity Intermittent Exercise (HIIE) on a stationary bike. Perform 3-4 sessions per week. Use a protocol like 30 seconds of all-out sprinting followed by 4 minutes of rest, repeated 4-6 times. This takes only about 3-4 minutes per session. While it is uncomfortable, it has been shown to reduce abdominal and subcutaneous fat more effectively than longer, moderate-intensity steady-state cardio, especially in those with higher body fat.

Postmenopausal women should adopt a healthy dietary pattern (high in sea fish, seaweeds, dairy, cereals, vegetables, and fruits; low in fast food, animal fat, sweets, and fried food) to protect against dysregulated lipid metabolism, metabolic syndrome, and obesity.

Focus on a diet rich in whole foods: eat more sea fish, seaweeds, dairy, cereals, fresh vegetables, and fruits. Simultaneously, reduce your intake of fast foods, animal fats, sweets, and fried foods. This pattern helps lower triglycerides, raise HDL cholesterol, and reduces the risk of metabolic syndrome common after menopause.

Increasing dietary protein intake to 1.0–1.2 g/kg/day helps compensate for skeletal muscle loss (sarcopenia) during weight loss in middle-aged and older women.

If you are trying to lose weight, aim for 1.0 to 1.2 grams of protein per kilogram of your body weight each day. This higher amount helps protect your muscle mass from being lost along with fat, which is a common issue for women after menopause.

Diets dominated by ultra-processed foods (Group 3) are nutritionally inferior and fail to meet WHO dietary recommendations for the prevention of obesity and chronic diseases, whereas diets based on minimally processed foods and culinary ingredients (Groups 1 and 2) are significantly healthier.

To improve your diet, focus on reducing the proportion of ultra-processed foods (like soft drinks, candies, processed meats, and ready meals) and increasing the proportion of minimally processed foods (like fresh fruits, vegetables, meat, and grains) and basic culinary ingredients (like oils and sugar). The study shows that diets dominated by ultra-processed foods fail to meet basic health guidelines for fat, sugar, sodium, and fiber, regardless of total calories. Shifting your food purchases toward whole ingredients is the most effective way to align your diet with chronic disease prevention goals.

Wearable activity trackers lead to improvements in body composition, specifically bodyweight and waist circumference, with large effect sizes for bodyweight reduction.

Using a wearable activity tracker can help you lose weight, with an average reduction of 0.5 to 1.5 kg. This benefit is seen in both healthy adults and those with chronic conditions like diabetes or heart disease. The weight loss is a result of the increased physical activity driven by the tracker.

Adherence to a Mediterranean diet increases the probability of remission from metabolic syndrome by 49% compared to control diets.

If you have metabolic syndrome, following a Mediterranean diet significantly increases your chances of reversing the condition compared to standard dietary advice.