Browse the evidence

Semaglutide 2.4 mg treatment leads to preferential loss of fat mass over lean body mass, which supports improvements in physical function and walking capacity.

Semaglutide 2.4 mg helps you lose fat mass more than lean body mass, which supports your physical function and walking capacity. This is achieved through once-weekly injections combined with lifestyle changes.

Bariatric surgery (RYGB, SG, BPD/DS) is the most effective long-term treatment for severe obesity, achieving 15-30% total weight loss, but carries significant risks of micronutrient deficiencies and lean body mass loss due to anatomical malabsorption.

Bariatric surgery is the most effective long-term weight loss option for severe obesity, but it is not a simple fix. It requires lifelong commitment to high-dose nutritional supplementation and regular medical monitoring to prevent serious deficiencies in iron, B12, and calcium, as well as loss of muscle mass. The procedure works through complex metabolic changes, not just stomach size reduction.

Metabolomic profiling (metabotyping) reveals that metabolic syndrome, obesity, T2DM, and CVDs share common metabolic signatures and pathways, suggesting that dietary interventions and pharmacologic treatments can target these shared traits.

Understanding that these diseases share metabolic roots allows for integrated treatment strategies, such as dietary changes that address insulin resistance and inflammation, benefiting multiple conditions simultaneously.

Fish oil supplementation (3.85 g/day EPA+DHA) combined with resistance training significantly increases absolute and relative upper-body strength and relative lower-body strength in young adults compared to placebo, without significantly altering lean body mass.

If you are a young, healthy adult doing resistance training 3 times a week, adding 3.85 grams of combined EPA and DHA daily (from fish oil) can help you get stronger, especially in your upper body and relative strength, without necessarily making you bigger. This effect is likely due to improved muscle quality and neural factors, not just muscle growth. Ensure you are getting enough protein (at least 1.2g/kg/day) as this may be required for the fish oil to work effectively.

Bariatric surgery (RYGB, SG, or LAGB) produces significantly greater sustained weight loss and higher rates of type 2 diabetes remission compared to intensive lifestyle interventions (ILI) or diabetes support and education (DSE) in patients with type 2 diabetes and obesity.

For individuals with Type 2 Diabetes and obesity, bariatric surgery is significantly more effective than lifestyle changes alone for losing weight and reversing diabetes. While lifestyle changes (like the Intensive Lifestyle Intervention in this study) can lead to modest weight loss (~6%) and minimal diabetes remission (~1%), surgery leads to substantial weight loss (~19%) and much higher remission rates (~7-23%). Surgery should be considered a highly effective medical option for those who meet criteria, rather than just a last resort after failed lifestyle attempts.

Performing leg extension exercises with a reduced hip flexion angle (approx. 40°) produces significantly greater hypertrophy in the rectus femoris compared to a standard upright hip angle (90°), while having no differential effect on the vastus lateralis.

If your goal is to maximize growth in the rectus femoris (the muscle in the middle of your thigh), adjust your leg extension machine to lean back slightly (approx. 40 degrees of hip flexion) rather than sitting fully upright. This position likely places the rectus femoris at a more optimal length for growth. Note that this change does not appear to affect the vastus lateralis (outer thigh) growth, so both positions are valid for general quad development.

Dietary patterns characterized by high intake of alcohol, fast food, fried/processed foods, and meat are associated with increased subclinical cardiovascular damage (specifically higher left ventricular mass and carotid-femoral pulse-wave velocity), with associations varying significantly by generation and sex.

Focus on reducing alcohol, processed meats, fried foods, and fast foods, as these patterns are linked to higher cardiovascular risk markers. Be aware that these risks may manifest differently depending on your age and sex; older men may see higher arterial stiffness, while women may see higher heart muscle mass. Tailor your diet to your specific demographic subgroup for better cardiovascular protection.

Women benefit more than men from combined resistance exercise and protein supplementation in terms of relative leg strength improvements (leg press and leg extension), despite men showing greater absolute lean body mass gains.

Women in this study saw greater relative improvements in leg strength from the program than men, even though men gained more absolute muscle mass. Focus on your own progress and functional strength rather than comparing absolute mass to men.

Combining a low-carbohydrate diet (approx. 50g carbs/day) with exercise (MICT or HIIT) significantly reduces anxiety levels in overweight young women, whereas the low-carbohydrate diet alone does not.

If you are overweight and feeling anxious, simply cutting carbs may not help your mental health and might even cause social stress. However, adding regular exercise (either moderate continuous cycling or high-intensity intervals) to a low-carb diet significantly reduces anxiety. Focus on the exercise component as the key driver for mental health benefits, not just the diet.

Morbid obesity (BMI ≥40 kg/m2) in young adults (16-49 years) is associated with a massive loss of future life years (8.3 years) and high mortality risk, with 72% of deaths in this demographic linked to obesity.

For young adults with morbid obesity (BMI ≥40), the health risks are severe and immediate in terms of life expectancy. This group loses an average of 8.3 years of life, with 72% of deaths linked to obesity. Early intervention is critical to prevent premature mortality.

Supplementing with 20g of native whey protein twice daily during a 12-week strength training program yields equivalent gains in muscle mass and strength compared to supplementing with an equivalent dose of spray-dried milk.

If you are starting a strength training program, you do not need to buy expensive native whey protein. Drinking milk or consuming standard milk powder provides the same muscle-building benefits as native whey, provided you are consuming enough total protein (around 1.6-2.0 g/kg/day) and training consistently.

Long-term adherence to healthy low-carbohydrate or low-fat diets results in transient microbiota shifts that revert toward baseline composition, demonstrating microbiome resilience despite sustained weight loss.

If you are trying to lose weight and keep it off, know that your gut bacteria will likely bounce back to their original state after the first few months, even if you stick to your diet. This 'resilience' might make long-term weight maintenance harder. Focus on sustainable dietary habits rather than expecting your microbiome to permanently change to support weight loss.

Endoscopic sleeve gastroplasty (ESG) using full-thickness suturing produces significant, durable weight loss (approx. 13-15% total body weight loss at 12 months) and improves metabolic markers, serving as a safer, reversible alternative to bariatric surgery.

If you are looking for a weight loss solution that is less invasive than surgery but more effective than dieting alone, ESG is a viable option. It involves an endoscopic procedure to suture the stomach, creating a sleeve that slows digestion and increases fullness. Expect about 13-15% weight loss over a year, combined with lifestyle changes. It is safer than traditional surgery and reversible.

Anti-obesity medications (AOMs) are significantly underutilized in clinical practice, with only 1.4% of eligible patients receiving prescriptions despite nearly half of the adult population meeting eligibility criteria.

If you are eligible for anti-obesity medications based on your BMI and health conditions, you are not currently receiving them in most cases. This is not necessarily a reflection of your health status but a systemic gap in care. Discussing these options with your provider and understanding insurance coverage is essential, as prescription rates remain extremely low despite high eligibility.

Nine weeks of set-volume equated hip thrust training produces gluteus maximus hypertrophy equivalent to back squat training, despite higher acute gluteal muscle activation during hip thrusts.

If your goal is glute growth, you can use either hip thrusts or back squats. They produce similar muscle growth when you do the same number of sets and reps. Don't feel pressured to only do hip thrusts just because they 'feel' like more glute work; squats are equally effective for building the glutes over time.

Hip thrust training transfers to deadlift strength gains similarly to back squat training.

If you are trying to get stronger at the deadlift, doing hip thrusts will help just as much as doing squats. You don't need to do deadlifts exclusively to improve your deadlift.

Type 2 Diabetes Mellitus (T2DM) incidence in the United States increased nearly twenty-fold (from 3.52 to 59.30 per 1,000) between 1990 and 2024, driven by environmental and behavioral risk factors such as obesity and sedentary lifestyles.

The risk of developing Type 2 Diabetes in the US has skyrocketed over the last 30 years, largely due to lifestyle factors like obesity and inactivity, not just better testing. To mitigate this personal risk, focus on modifiable lifestyle factors (diet, activity) rather than assuming healthcare improvements have solved the underlying environmental drivers of the disease.

Native Hawaiian/Pacific Islander populations in the US face the highest diabetes burden, with incidence rates of 94.75 per 1,000 and prevalence of 20.65% in 2020-2024, significantly exceeding other racial/ethnic groups.

If you are Native Hawaiian or Pacific Islander, your statistical risk for diabetes is among the highest in the US. This is not just bad luck; it is influenced by systemic access issues. Prioritize early screening and culturally competent care that addresses both biological risks and social barriers to healthy living.

Dietary restriction (including caloric restriction, intermittent fasting, and ketogenic diets) extends healthspan and lifespan by promoting the clearance of senescent cells (senolysis), metabolic reprogramming, and epigenetic rejuvenation.

To leverage dietary restriction for longevity, you can adopt strategies like caloric restriction (eating less without being malnourished), intermittent fasting (eating within specific windows like 16:8), or ketogenic diets (high fat, low carb). These regimens aim to trigger biological processes like clearing out old cells (senolysis) and improving metabolic health, which may extend your healthspan. Start with small changes, like a shorter eating window, and ensure your diet remains nutrient-dense.

Performing leg press exercises with a knee flexion range of motion of approximately 100 degrees yields quadriceps femoris muscle hypertrophy equivalent to performing the exercise with maximum individualized knee flexion (peak ROM) in resistance-trained individuals.

If you are an experienced lifter, you do not need to force your leg press to the absolute bottom if it causes pain or technical breakdown. Stopping at approximately 100 degrees of knee flexion (where your shins are roughly perpendicular to the floor or slightly past) will build your quads just as effectively as going as deep as physically possible. Focus on reaching failure with good form at this depth rather than chasing extreme depth.

The protective effect of higher carbohydrate intake on hypertension is mediated by improved psychological well-being and reduced adiposity.

Eating a diet with 42-51% of calories from carbohydrates may help lower blood pressure not just by weight management, but also by improving mental health and reducing stress-related factors like depression and anxiety.

Three-dimensional optical (3DO) imaging using the Fit3D ProScanner is a sensitive and accurate tool for monitoring longitudinal changes in body composition (total fat mass, fat-free mass, and appendicular lean mass) compared to dual-energy X-ray absorptiometry (DXA).

Use 3DO imaging (like Fit3D) to track your body composition changes over time rather than relying solely on scale weight. The technology is validated to detect small changes in fat and lean mass comparable to clinical DXA scans. For best results, take multiple scans and average them to minimize error, and focus on trends over weeks rather than day-to-day fluctuations.

High consumption of sugar-sweetened beverages (≥2 servings/day) increases cardiovascular disease risk by 15% even in individuals who meet physical activity guidelines.

If you drink two or more sugary beverages a day, your cardiovascular risk remains elevated even if you exercise regularly. While exercise is crucial for health, it does not completely cancel out the negative effects of high sugar intake. To minimize heart disease risk, limit sugary drinks regardless of your activity level.

Not meeting physical activity guidelines combined with high consumption of sugar-sweetened beverages (≥2 servings/week) is associated with a 47% higher risk of cardiovascular disease.

If you are not physically active, drinking sugary beverages frequently (≥2 servings/week) significantly increases your risk of heart disease. To lower your risk, you should aim to increase physical activity and reduce sugary drink intake.