Browse the evidence

Low-load resistance training with blood flow restriction (LL-RT with BFR) produces muscle hypertrophy equivalent to high-load resistance training (HL-RT) across various repetition schemes (failure, 15 reps, or 75 reps) in lower limb exercises.

If you want to build muscle but cannot lift heavy weights due to injury or joint pain, try low-load resistance training combined with blood flow restriction (BFR). Use light weights (20-40% of your max) and restrict blood flow to the working muscle. You can use different repetition schemes (like 15 reps per set or going to failure), and you will likely build muscle just as effectively as if you were lifting heavy weights. This is particularly useful for rehabilitation or when heavy loading is contraindicated.

Once-weekly subcutaneous semaglutide 2.4 mg significantly improves weight-related quality of life (IWQOL-Lite-CT) and health-related quality of life (SF-36v2) compared to placebo in adults with overweight or obesity, independent of the magnitude of weight loss in some domains.

If you have obesity or overweight with related health issues, once-weekly semaglutide 2.4 mg, combined with lifestyle changes, significantly improves your quality of life, including physical function, mental health, and control over food cravings, compared to placebo. This benefit is sustained over time and is driven by fat loss rather than muscle loss.

Semaglutide 2.4 mg significantly improves control of eating, including craving control and craving for savory, sustained up to week 104, compared to placebo.

Semaglutide 2.4 mg helps you control your eating, including cravings for savory and sweet foods, with benefits sustained up to 104 weeks. This is achieved through once-weekly injections combined with lifestyle changes.

Acute supplementation with capsaicin or capsiate (typically 12 mg, 45 minutes pre-exercise) significantly enhances muscular endurance (volume load/repetitions to failure) in resistance training.

If you are doing resistance training, taking 12 mg of capsaicin or capsiate 45 minutes before your workout may help you squeeze out a few more reps or sets. This effect is likely due to reduced perceived effort (RPE) and potentially better muscle contraction mechanics. It does not appear to help with cardio/endurance tasks like running or cycling.

Expanded access to GLP-1 and GIP/GLP-1 receptor agonists (e.g., semaglutide, tirzepatide) for eligible populations could avert approximately 42,000 deaths annually in the US by reducing obesity-related mortality.

If you are eligible for GLP-1/GIP agonists based on BMI and comorbidities, expanding insurance coverage and manufacturing capacity could save tens of thousands of lives annually by reducing obesity-related mortality. Current barriers like cost and supply shortages prevent many from accessing these life-saving treatments.

Lifestyle interventions remain critical for optimizing body composition (preserving lean mass) and improving cardiovascular fitness, outcomes that AOMs alone do not fully address.

When using AOMs, prioritize protein intake and resistance/cardio exercise. This ensures you lose fat rather than muscle and improves your heart health, maximizing the 'quality' of the weight loss.

Achieving a total body weight loss of 5% or higher in individuals with type 2 diabetes and obesity significantly improves glycemic control (reducing HbA1c) and reduces the utilization of glucose-lowering medications.

If you have type 2 diabetes and are overweight or obese, aiming to lose at least 5% of your body weight is a critical first step. This modest loss can significantly improve your blood sugar levels and may allow you to reduce your diabetes medications. Focus on sustainable lifestyle changes involving diet, exercise, and behavioral support rather than just medication adjustments.

Achieving a total body weight loss of 10% or more in individuals with type 2 diabetes leads to progressive improvements in glycemic control and cardiometabolic risk factors, and may be necessary to reduce mortality.

If you have type 2 diabetes, aiming for 10% or more weight loss can provide even greater benefits for your heart health and longevity than the standard 5% goal. This may require more intensive lifestyle changes or medical support, but the potential to reduce cardiovascular events and death makes it a worthwhile target for many patients.

Lifestyle interventions involving caloric restriction and increased physical activity reduce the risk of incident chronic kidney disease in overweight or obese diabetic patients by 30% compared to standard education-based follow-up.

If you are overweight and have diabetes, combining a healthier diet with regular exercise can cut your risk of developing kidney disease by 30%. This is more effective than just receiving education about your condition. Focus on sustainable changes to lose weight and manage blood sugar.

Bodybuilding coaches consistently recommend Creatine and Fish Oils as top supplements, while recommending specific Performance-Enhancing Drugs (Testosterone, Primobolan, GH) for enhanced athletes, highlighting a significant gap between evidence-based supplementation and the lack of safety data for PEDs.

Creatine (3-10 g/day) and Fish Oils are the most recommended supplements by bodybuilding coaches. Creatine is well-supported for strength and muscle gains. Fish oils support general health and may mitigate lipid issues from PEDs. For enhanced athletes, coaches recommend Testosterone, Primobolan, and Growth Hormone, but there is limited safety data on these high-dose regimens in healthy athletes.

Adherence to a diet characterized by high Food Compass 2.0 scores (indicating encouragement of minimally processed foods, legumes, nuts, and seafood, and minimization of ultra-processed foods, added sugars, and artificial additives) is associated with significantly lower risks of cardiovascular disease, cancer, lung disease, metabolic syndrome, and all-cause mortality.

Use the Food Compass 2.0 framework to guide your food choices: prioritize foods scoring 70+ (like seafood, legumes, nuts, vegetables, and fruits), consume foods scoring 31-69 (like meat, poultry, eggs, and dairy) in moderation, and minimize foods scoring 30 or below (like sugary beverages, processed cereals, and many snacks). This approach focuses on nutrient density, fiber, and minimizing added sugars and artificial additives, rather than just avoiding 'processed' foods.

A multicomponent workplace-based Mediterranean diet intervention significantly improves adherence to Mediterranean diet principles in career firefighters over 12 months.

To improve your diet, don't just rely on knowing what to eat. Change your environment. Make healthy food cheaper and more available (discounts, samples). Get your family and coworkers involved. Use reminders and cooking demos to make the new habits easier to stick with over the long term.

High-quality protein-based multi-ingredient supplementation (MIS) containing whey/casein, creatine, vitamin D, calcium, and fish oil significantly mitigates anabolic resistance in obese older adults, whereas low-quality protein (collagen) fails to support lean mass or strength gains despite matching total protein intake.

For older adults with excess body fat, simply eating enough protein is not enough to build muscle. You need high-quality protein sources (whey/casein) that are rich in leucine and essential amino acids. Combining this with creatine, vitamin D, and omega-3s is significantly more effective than using low-quality proteins like collagen, even if the total protein grams are the same.

Fortifying plant-based protein blends with leucine to match the leucine content of whey protein stimulates muscle protein synthesis (MPS) to an equivalent extent as whey protein in young healthy adults.

If you are using plant-based protein, ensure it is fortified with leucine or is a blend designed to match the leucine content of whey protein. A 20g dose of such a fortified plant protein will stimulate muscle protein synthesis just as effectively as 20g of whey protein in young, healthy adults.

Combining GLP-1 receptor agonists (GLP-1RAs) with lifestyle modifications results in significantly greater weight loss and improved cardiometabolic biomarkers compared to lifestyle modifications alone in adults with overweight or obesity.

If you have overweight or obesity, combining a GLP-1 receptor agonist (like semaglutide or liraglutide) with lifestyle changes (calorie restriction and regular exercise) is significantly more effective for weight loss and improving heart health markers than lifestyle changes alone. To minimize muscle loss, ensure your lifestyle intervention includes resistance training. Consult a doctor to determine if GLP-1RAs are appropriate for you.

For recreationally trained men, performing resistance training 4 times per week yields significantly greater upper-body strength gains (bench press and arm curl) than 2 times per week when total weekly volume is equated, while muscle size and power adaptations remain similar between frequencies.

If you are a recreationally trained man focused on maximizing upper-body strength (bench press, curls), aim for 4 resistance training sessions per week. If your primary goals are muscle size (hypertrophy) or power, 2 sessions per week is equally effective, provided you perform the same total amount of work (sets x weight) in those 2 sessions as you would in 4. Do not assume that adding more workout days automatically adds more muscle; it adds strength efficiency for upper-body lifts.

Intentional weight loss of 5% or more is associated with a significant reduction in long-term all-cause mortality, whereas weight gain increases mortality risk.

If you are overweight, intentionally losing 5% or more of your body weight is associated with a significantly lower risk of dying over the next 20+ years. Even if you regain some of that weight later, the initial loss and the prevention of further gain provide long-term mortality benefits. Focus on the act of losing weight intentionally rather than maintaining a specific number on the scale forever.

An East Asian diet-mimicking plan based on Mediterranean and DASH principles, delivered as ready meals, significantly improves glycemic control (HbA1c) and reduces cardiovascular risk factors compared to a self-prepared food exchange system-based diet in Korean adults with type 2 diabetes.

For Korean adults with type 2 diabetes, switching from a traditional food exchange system to a culturally adapted Mediterranean/DASH-style diet can significantly lower HbA1c and improve cardiovascular risk factors. The key to success in this study was the provision of ready meals, which ensured adherence to the specific macronutrient profile (lower net carbs, higher unsaturated fats) without requiring participants to master new cooking techniques. If you struggle with adherence, consider a meal delivery service that offers similar low-glycemic, high-unsaturated-fat options tailored to your cultural preferences.

The same diet-mimicking intervention significantly reduces body weight, BMI, waist circumference, and blood pressure compared to a self-prepared food exchange system diet in patients with BMI ≥ 23 kg/m2.

If you have type 2 diabetes and a BMI over 23, adopting a culturally adapted Mediterranean/DASH-style diet can help you lose weight and lower blood pressure. The study showed that providing ready meals helped participants achieve these results without needing to count calories manually, as the calories were pre-calculated based on their ideal body weight.

Animal-based proteins are consistently scored higher in quality than incomplete plant-based proteins, making them more effective for stimulating tissue anabolism in clinical or single-source meal contexts.

If you rely on plant proteins, you may need to eat more of them or combine different sources to get the same muscle-building benefit as animal proteins. Animal proteins (meat, dairy, eggs) are naturally more efficient at stimulating muscle growth.

Spirulina supplementation (3000 mg/day) during a 12-day gradual weight loss protocol significantly enhances fat mass loss and body fat percentage reduction compared to placebo in competitive wrestlers, while maintaining skeletal muscle mass and reducing catabolic myostatin levels.

If you are a wrestler cutting weight, adding 3 grams of spirulina daily (split into 3 doses before meals) to your gradual weight loss diet can help you lose more fat than dieting alone. In this study, wrestlers taking spirulina lost significantly more fat mass and body fat percentage over 12 days compared to those taking a placebo. However, spirulina did not prevent muscle loss; both groups lost similar amounts of muscle. To preserve muscle, ensure your protein intake is high (1.6-3.1 g/kg/day) alongside the spirulina and diet.

Spirulina supplementation during gradual weight loss significantly reduces serum myostatin (MST) and liver enzymes (AST, ALT) compared to placebo, suggesting a protective effect on the liver and a reduction in the catabolic environment.

Spirulina supplementation (3g/day) during your weight cut may help protect your liver and reduce catabolic stress. The study showed significant reductions in liver enzymes (AST, ALT) and myostatin (a hormone that limits muscle growth) in wrestlers taking spirulina compared to placebo. This suggests spirulina may help create a less catabolic environment during weight loss.

Intensive lifestyle intervention (ILI) reduces cardiovascular event risk in adults with overweight/obesity and type 2 diabetes ONLY when the patient maintains at least 50% of the time in the target weight loss range (>50% TIR) after initial weight loss.

For adults with type 2 diabetes and obesity, the cardiovascular benefits of lifestyle changes (diet and exercise) are not guaranteed by weight loss alone; they are contingent on maintaining that weight loss. If you lose weight but regain it, you may not see the expected reduction in heart disease risk. Therefore, the primary goal of lifestyle intervention should be long-term weight maintenance, not just initial loss.

Weight loss interventions, including lifestyle changes and bariatric surgery, reduce blood pressure, glomerular hyperfiltration, and proteinuria in obese patients with CKD.

If you are overweight and have early kidney disease or diabetes, losing weight through diet and exercise can significantly reduce your risk of developing kidney failure. This works by lowering blood pressure and reducing the strain on your kidneys. Consult your doctor for a safe plan.