Browse the evidence

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.

Various strength training methodologies (plyometric, occlusion, variable resistance, conventional, eccentric, and concurrent) consistently increase indicators of muscle fatigue (blood lactate, heart rate, RPE, DOMS, and ammonia), and the magnitude of this fatigue depends on the specific training method, population characteristics, and sex.

Expect to feel fatigued during and after strength training. This is normal and varies by the type of exercise (e.g., plyometrics vs. occlusion) and your fitness level. Monitor indicators like heart rate and perceived exertion to manage your training load and recovery.

A 12-week web-based weight loss intervention combined with enhanced remote human support (telephone and email) based on Supportive Accountability significantly increases weight loss in male workers aged 18-39 compared to standard support or no support.

For young male workers struggling with weight, a web-based program that includes regular, supportive check-ins (via phone or email) from a single provider is more effective than self-directed internet programs. The key is building a trusting relationship with the provider through 'Supportive Accountability,' which encourages adherence without being overly directive.

A low-intensity web-based weight loss intervention with standard human support (face-to-face sessions and monthly emails) is effective for weight loss in male workers aged 18-39.

Even a minimal web-based intervention with just two face-to-face meetings and monthly emails can help young male workers lose weight. This suggests that for those with high motivation, less intensive support may be sufficient.

For recreationally resistance-trained individuals, performing low-bar back squats allows for the lifting of significantly greater loads compared to high-bar or safety-bar squats, making it the superior technique for maximizing strength output.

If your main goal is to lift the heaviest weight possible, use the low-bar squat technique. Place the bar lower on your upper back (below the traps) to allow for greater hip flexion and torso lean, which enables you to lift significantly more load than with high-bar or safety-bar techniques.

Safety-bar squats produce greater myoelectric activity in the gluteus maximus compared to high-bar squats, making them a potentially more effective tool for targeting gluteal hypertrophy.

If you want to specifically target your glutes for growth, try using a safety-bar squat. This specialized bar allows for a more upright torso position, which was found to increase gluteus maximus activation compared to the standard high-bar squat.

Multidisciplinary interventions combining diet, physical activity, pharmacological treatments, and bariatric surgery are required to effectively reduce cardiovascular risk and mortality in obese patients, as lifestyle changes alone are often insufficient.

Do not rely on diet and exercise alone to manage obesity-related heart risks. Because relapse is common with lifestyle changes alone, you should seek a multidisciplinary care plan that may include FDA-approved weight-loss medications or bariatric surgery alongside lifestyle modifications. This combined approach is the standard of care for reducing cardiovascular events and mortality in obese patients.

Adherence to treatment protocols is a critical determinant of success in obesity management, and individualized care plans are recommended to improve adherence.

Success depends on sticking to your plan. If you find yourself struggling to follow a complex regimen, ask your doctor for an individualized care plan. A multidisciplinary team (doctors, dietitians, psychologists) can tailor the approach to your life, making it easier to adhere to long-term.

Mediterranean and Vegetarian diets are effective for weight loss and cardiovascular risk reduction, with Vegetarian diets potentially lowering LDL cholesterol more effectively and Mediterranean diets lowering triglycerides more significantly.

Both Mediterranean and Vegetarian diets are effective for weight loss and heart health. If your main concern is high LDL cholesterol, a Vegetarian diet may be slightly more effective. If you are focused on lowering triglycerides, the Mediterranean diet may offer a greater benefit. Choose the one you can sustain.

Consumption of hyperprocessed foods contributes to the epidemic of obesity, diabetes, and cardiovascular disease, with risk increasing proportionally to consumption levels.

Minimize the intake of hyperprocessed foods, defined as industrial formulations with five or more ingredients. Focus on whole or minimally processed foods. Reducing consumption of these items is directly linked to lower risks of diabetes and cardiovascular disease.

Early and lifelong treatment of obesity is critical to prevent weight recurrence, preserve lean body mass, and reduce cardiometabolic risk.

Treat obesity as a chronic condition requiring lifelong management, not a short-term diet. Focus on early intervention to prevent complications and preserve muscle mass. Use comprehensive strategies including nutrition, physical activity, behavioral counseling, and medical interventions as needed. Regular follow-ups are essential to maintain health and prevent weight recurrence.

Treatment with tirzepatide (10 or 15 mg) produces a significantly greater reduction in predicted 10-year cardiovascular disease (CVD) risk compared to semaglutide (1.7 or 2.4 mg) in individuals with obesity without diabetes or prior CVD.

If you have obesity and are at risk for heart disease but don't have diabetes, tirzepatide may offer better long-term heart protection than semaglutide. It is taken as a weekly injection and has been shown to reduce your predicted 10-year risk of cardiovascular events more than semaglutide. Discuss with your doctor if this medication is appropriate for your specific health profile.

Intensive glycemic control (HbA1c <6.5%) in the first year after diagnosis of Type 2 Diabetes significantly reduces the 10-year risk of microvascular and macrovascular complications compared to higher HbA1c levels.

If you were just diagnosed with Type 2 Diabetes, ask your doctor about getting your blood sugar under tight control (HbA1c <6.5%) as soon as possible. This early, intensive treatment significantly reduces your risk of developing serious complications like kidney disease, heart problems, and vision loss over the next 10 years.

Tirzepatide treatment produces significant body weight, waist circumference, and waist-to-height ratio reductions in women across all reproductive stages (premenopausal, perimenopausal, and postmenopausal), demonstrating efficacy irrespective of menopausal status.

If you are a woman with overweight or obesity, whether you are premenopausal, perimenopausal, or postmenopausal, tirzepatide (15mg weekly) is highly effective for significant weight loss. Do not assume your reproductive stage limits your ability to lose weight with this treatment; the data shows robust results across all stages.

Weight loss of at least 10% of total body weight reverses steatohepatitis and improves histologic fibrosis in patients with metabolic dysfunction-associated steatotic liver disease (MASLD).

To reverse liver inflammation and scarring, you need to lose at least 10% of your body weight. While losing just 3-5% helps reduce liver fat, it is not enough to fix the underlying disease. Focus on sustainable dietary changes and regular exercise to reach this higher threshold.

Bariatric surgery (sleeve gastrectomy, gastric bypass, duodenal switch) provides superior long-term total weight loss (23.4%–40.7%) compared to GLP-1 receptor agonists (up to 25.3% with tirzepatide).

If your primary goal is maximum, durable weight loss, bariatric surgery currently outperforms GLP-1 medications in long-term results. However, surgery requires accepting permanent anatomical changes and potential risks. GLP-1s offer a less invasive alternative with significant weight loss, but require lifelong adherence to avoid regain and manage side effects. Choose based on your tolerance for invasiveness versus daily medication burden.