Browse the evidence

Resistance exercise improves NAFLD and may be more tolerable for patients with poor cardiorespiratory fitness who cannot tolerate intense aerobic exercise.

If you struggle with intense cardio like running, try resistance training. It improves NAFLD and is often easier for people with low fitness levels to maintain consistently.

Weight loss, particularly after menopause, significantly reduces the risk of postmenopausal breast cancer.

For postmenopausal women, achieving and maintaining a weight loss of 10 kg or more can cut the risk of breast cancer by half. This is achieved by reducing circulating estrogen levels. Focus on sustainable weight management strategies rather than quick fixes.

An intensive lifestyle intervention (ILI) involving caloric restriction and increased physical activity is associated with partial or complete remission of type 2 diabetes in overweight adults, particularly those with shorter disease duration, lower baseline HbA1c, and no insulin use.

If you have type 2 diabetes, especially if it was diagnosed recently and you are not yet on insulin, an intensive lifestyle program focusing on significant weight loss (1200-1800 calories/day) and regular exercise (175 minutes/week) can potentially put your diabetes into remission. This means your blood sugar levels may return to normal without medication. However, this requires sustained effort, and success is most likely if you act early in the disease process.

Higher genetic predisposition to obesity, measured by BMI-related loci, interacts with lifestyle factors (specifically SSB intake, fried food, and sedentary behavior) to exponentially increase obesity risk, but healthy lifestyle choices can attenuate this genetic risk.

If you have a family history of obesity, focus on healthy lifestyle choices like limiting SSBs, avoiding fried foods, and staying physically active. These choices can significantly reduce your genetic risk of becoming obese.

Resistance training significantly improves muscle strength in healthy older adults (mean age ≥65), with optimal dose-response relationships defined by a training period of 50–53 weeks, intensity of 70–79% 1RM, time under tension of 6.0s, and rest intervals of 60s between sets.

To maximize muscle strength, older adults should engage in resistance training twice a week for about a year. Use weights that feel like 70-79% of your maximum lift, perform 2-3 sets of 7-9 reps, and rest 60 seconds between sets. Ensure each repetition takes about 6 seconds total (time under tension). This specific protocol yields the largest strength gains.

Caloric restriction and exercise training can reverse metabolic inflexibility by enhancing mitochondrial function and promoting the expression of key metabolic regulators like PGC1α and AMPK.

Regular exercise and controlled caloric intake are proven ways to improve your body's metabolic flexibility. Exercise triggers signals (like AMPK and PGC1α) that boost mitochondrial function and insulin sensitivity. Consistent application of these lifestyle factors can help reverse metabolic inflexibility associated with obesity and type 2 diabetes.

A Mediterranean-style diet reduces the prevalence of metabolic syndrome independently of weight loss, whereas standard low-calorie diets primarily work through weight reduction.

Adopt a Mediterranean-style diet rich in unsaturated fats, fiber, and omega-3s. This approach reduces metabolic syndrome risk even if you don't lose as much weight as on a standard low-calorie diet.

Physical activity of 45-60 minutes per day is required to maintain weight loss and prevent weight regain, whereas 30 minutes is sufficient for cardiovascular protection but not necessarily weight maintenance.

If you have lost weight, aim for 45-60 minutes of moderate physical activity daily to prevent regaining it. Standard 30-minute recommendations may be insufficient for long-term weight maintenance.

Selenium supplementation improves semen quality (count, concentration, morphology, and motility) in men with low baseline selenium levels, as demonstrated in randomized controlled trials.

For men experiencing fertility issues, checking selenium levels is a low-cost, high-yield step. If levels are low, supplementation has been shown in RCTs to improve sperm count, motility, and morphology.

Increasing whole grain intake by two servings per day is associated with a 21% reduction in the risk of developing type 2 diabetes.

To lower your risk of type 2 diabetes, aim to eat two servings of whole grains every day. A serving is roughly 20 grams of grain. Focus on foods where the bran and germ are intact, such as whole wheat bread, brown rice, and oats, rather than just the germ. This habit, maintained over years, is linked to a significantly lower risk of developing diabetes, independent of your weight.

Vitamin D supplementation (≥792 IU/day) significantly reduces the risk of hip fractures (by 30%) and non-vertebral fractures (by 14%) in adults, particularly when combined with calcium.

To reduce fracture risk, aim for 800 IU of Vitamin D3 daily, ideally combined with 1200mg of Calcium. This combination has been shown in large studies to significantly lower hip and non-vertebral fracture rates. Ensure you are actually taking the supplement consistently, as poor adherence negates benefits.

A Mediterranean diet supplemented with virgin olive oil or nuts reduces the progression to type 2 diabetes by approximately 50% compared to a conventional low-fat diet, independent of significant weight loss.

Adopt a Mediterranean dietary pattern, specifically ensuring you consume either 30 grams of nuts daily or 1 liter of virgin olive oil weekly. This specific supplementation has been shown in clinical trials to cut the risk of developing type 2 diabetes by half over four years, even without significant weight loss, likely due to anti-inflammatory and metabolic benefits of these specific foods.

Physical activity reduces type 2 diabetes risk by approximately 30% compared to low activity levels, primarily through improved insulin sensitivity and visceral fat reduction rather than total calorie expenditure.

Increase your total physical activity, specifically by reallocating 30 minutes of sedentary time (like watching TV or sitting at a desk) into moderate to vigorous movement. This specific change improves insulin sensitivity by 15% and reduces diabetes risk by 30%, independent of significant weight loss.

Resistance exercise combined with a protein intake of 1 to 1.5 g/kg/day is the primary management strategy for sarcopenia.

To fight age-related muscle loss, you must do resistance training and eat 1 to 1.5 grams of protein per kilogram of body weight every day. Don't rely on vitamin D or steroids as primary treatments, as evidence for their benefit in sarcopenia is lacking.

Time-restricted feeding (16h fast/8h feed) combined with resistance training reduces fat mass and improves metabolic biomarkers (insulin, triglycerides, inflammation) while maintaining muscle mass and maximal strength in resistance-trained males, despite significant decreases in anabolic hormones (testosterone, IGF-1).

If you are a resistance-trained male, you can try eating all your daily calories within an 8-hour window (e.g., 1pm to 9pm) while keeping your total calories and protein intake the same as your normal diet. Do this for 8 weeks alongside your regular strength training. You may lose more fat and improve metabolic markers like insulin sensitivity without losing muscle or strength, even if your testosterone and IGF-1 levels drop slightly. Do not reduce your total calories; the timing is the key variable.

Replacing sitting time with vigorous physical activity (VPA) yields the largest reduction in cardiovascular disease mortality risk, particularly for individuals who sit more than 6 hours per day.

If you sit for more than 6 hours a day, try to replace some of that time with vigorous exercise (like running, fast cycling, or high-intensity interval training). This substitution offers the greatest protection against heart disease-related death. Even replacing sitting with brisk walking helps, but vigorous activity provides the strongest benefit for high sitters.

High-wheat fiber and inulin-propionate ester supplementation can reduce weight gain and improve body composition in overweight adults over long-term (24 weeks) interventions.

If you are overweight, try adding high-wheat fiber or inulin-propriate ester supplements to your daily routine for at least 24 weeks. This has been shown in human trials to significantly reduce weight gain and improve body composition, likely by making you feel fuller and reducing your overall energy intake.

Physically active individuals require 1.4–2.0 g/kg/day of protein to optimize training adaptations, which is safe and does not impair kidney or bone health.

If you exercise regularly, aim for 1.4 to 2.0 grams of protein per kilogram of your body weight every day. This amount is safe for your kidneys and bones and helps your body adapt to training. You can get this from whole foods or supplements.

Consuming high-quality protein (whey and casein) immediately before, during, or after exercise optimizes recovery, immune function, and lean body mass.

Try to eat a meal or snack with high-quality protein (like whey, casein, eggs, or meat) around your workout—either before, during, or after. This helps your muscles recover, reduces soreness, and supports your immune system.

Healthy adults with minimal physical activity require a minimum of 0.8 g protein per kg body weight per day to maintain nitrogen balance, but functional needs such as muscle preservation and strength require 1.0–1.6 g/kg/day depending on activity level.

If you are sedentary, aim for 0.8 g of protein per kg of body weight daily to stay healthy. If you exercise moderately or intensely, or if you are older, increase your intake to 1.0–1.6 g/kg daily to protect your muscles and strength. This is not just about avoiding deficiency; it is about optimizing your body's function.

Consuming 1.3–1.6 g protein per kg body weight per day, combined with exercise, is safe for healthy adults and supports fat loss and muscle preservation during weight reduction.

If you are trying to lose fat, do not just cut calories. Eat 1.3–1.6 g of protein per kg of body weight daily and exercise. This combination helps you lose fat while keeping your muscle, which is better for your long-term health than losing muscle along with fat.

Daily moderate-intensity aerobic exercise (approx. 500 kcal/session) for 14 weeks significantly reduces total, abdominal, and visceral fat in obese women, even when caloric intake is adjusted to maintain body weight (exercise without weight loss).

Perform daily moderate-intensity aerobic exercise (like brisk walking or jogging) for about 60 minutes, aiming to burn roughly 500 calories per session. You do not need to restrict your calories to see fat loss. Even if you eat enough to maintain your weight, this exercise routine will significantly reduce your total and abdominal fat over 14 weeks. Focus on waist size and how you feel, not just the number on the scale.

Exercise-induced weight loss is superior to diet-induced weight loss for reducing total fat, abdominal fat, and improving insulin sensitivity in obese women.

If you are trying to lose weight, combining exercise with a moderate caloric deficit is more effective for fat loss than dieting alone. Specifically, exercise helps you lose more total and abdominal fat while preserving muscle mass. Aim for daily aerobic exercise burning ~500 calories alongside a modest caloric reduction.

High sodium intake increases blood pressure and arterial stiffness through volume expansion, endothelial dysfunction, and sympathetic activation, whereas modest sodium reduction lowers BP and improves vascular health in hypertensive and salt-sensitive individuals.

If you have high blood pressure, reducing your sodium intake is one of the most effective steps you can take to lower it and protect your heart. However, if you have normal blood pressure, you don't need to obsessively restrict salt to near-zero levels, as extremely low intake may carry its own risks. Focus on reducing excess intake rather than eliminating it entirely.