Browse the evidence

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.

Roux-en-Y gastric bypass (RYGB) and Health Behavior Intervention (HBI) are cost-effective strategies for managing class III obesity, whereas current-price pharmacotherapies (semaglutide and tirzepatide) are not cost-effective compared to no treatment or HBI.

For individuals with class III obesity, Roux-en-Y gastric bypass offers the best long-term health outcomes and cost-effectiveness. Health Behavior Intervention (13 counseling sessions) is also cost-effective. Current GLP-1/GIP medications are not cost-effective at current prices, though lower prices could change this.

Combining CPAP with weight loss (via pharmacotherapy or lifestyle) yields greater improvements in cardiovascular risk profiles (specifically systolic blood pressure) than either treatment alone.

If you use CPAP for sleep apnea, adding weight loss (through diet, exercise, or medications like Tirzepatide) provides extra protection for your heart and blood pressure that CPAP alone does not offer. The combination is superior to either treatment by itself.

Low-load, high-volume resistance training is as effective as high-load resistance training for maximizing strength.

If your goal is to get stronger (maximal strength), you need to lift heavier loads. Lighter weights with high repetitions are not as effective for this specific goal.

There is significant individual variability in response to all anti-obesity medications, with a substantial subset of patients experiencing weight gain or failing to achieve target weight loss, regardless of the drug class.

Not everyone responds to weight loss drugs the same way. Some people gain weight even on strong medications like tirzepatide. If you don't see results, it may be due to individual biological differences, not just effort. Discuss switching medications with your doctor.

When total training volume is equated, resistance training performed 3 times per week produces greater absolute strength gains than 4 times per week in young men.

If you are training 4 days a week and not seeing strength gains, check your volume. If you are already doing enough total work, switching to 3 days a week might actually help you get stronger, provided you keep the total sets and reps the same. Do not just add a 4th day on top of your current routine expecting better results; consolidate your volume into fewer sessions.

Training frequency does not significantly impact muscle hypertrophy (measured by circumference) when total training volume is equated.

If your goal is muscle size, focus on hitting your total weekly sets and reps, not how many days you train. Whether you train 3 or 4 days a week, as long as the total volume is the same, your muscle growth will be similar. Do not feel pressured to add extra days just for the sake of frequency.