Browse the evidence

MMA fighters exhibit body composition (skeletal muscle mass, body fat percentage, visceral fat mass, and phase angle) statistically indistinguishable from elite powerlifting athletes, despite fundamentally different training methodologies.

If you are an MMA fighter, you do not need to sacrifice muscle mass to maintain your conditioning. Your body composition (muscle and fat levels) can be just as favorable as a powerlifter's, provided you train with sufficient intensity and volume. Focus on maintaining high tissue quality (phase angle) through balanced aerobic and anaerobic training rather than cutting muscle for weight classes.

Younger age (<65 years) and shorter duration of severe neutropenia are the strongest independent predictors of lean mass gain during adapted physical activity in hematology inpatients.

Younger hematology patients (<65) and those with shorter periods of severe neutropenia are likely to see the greatest lean mass benefits from adapted physical activity. Older patients or those with prolonged neutropenia may see minimal gain, but activity remains safe and improves physical function.

Higher dietary diversity, specifically protein-enriched and anti-inflammatory dietary diversity, is associated with a lower prevalence of low muscle mass (LMM) in older Chinese adults.

For older adults, simply increasing the variety of foods consumed—specifically ensuring regular intake of protein-rich sources (meat, fish, eggs, dairy, beans, nuts) and anti-inflammatory foods (vegetables, fruits, tea)—is associated with a significantly lower risk of low muscle mass. Aim for a diverse plate rather than focusing on a single supplement or food group.

A carbohydrate-reduced telemedicine nutrition intervention significantly reduces the incidence of major adverse cardiovascular events (MACE) and new-onset cardiovascular disease in adults with type 2 diabetes or obesity compared to matched controls.

If you have type 2 diabetes or obesity, a telemedicine program that helps you restrict carbohydrates to under 30 grams per day and maintain nutritional ketosis can significantly lower your risk of heart attacks, strokes, and other cardiovascular events compared to standard care. This approach works by improving overall metabolic health, which appears to protect the heart even if cholesterol levels change.

A 12-week canteen-based intervention marginally improves lipid metabolism (decreased TG, LDL-C, ApoB; increased HDL-C) but does not significantly affect blood pressure, glucose, or insulin resistance in middle-aged adults.

While this intervention improves lipid profiles, it may not significantly impact blood pressure or blood glucose in the short term. Focus on lipid management through dietary changes if you have mild dyslipidemia.

Uniform dietary interventions fail to deliver consistent metabolic benefits in individuals with metabolic syndrome due to biological heterogeneity, whereas food-based dietary patterns emphasizing whole foods and limiting ultra-processed foods provide relatively consistent metabolic benefits across diverse phenotypes.

Stop looking for a single 'best' diet for metabolic syndrome. Instead, focus on the quality of your food: eat more whole foods (vegetables, fruits, legumes, whole grains) and minimize ultra-processed foods. This approach is more likely to benefit you regardless of your specific metabolic profile.

Obesity is a significant independent predictor of multimorbidity (two or more chronic non-communicable diseases), increasing the likelihood by 1.87 times compared to normal-weight individuals, even after adjusting for socioeconomic and demographic factors.

Maintaining a healthy weight is a critical strategy for preventing the accumulation of multiple chronic diseases, such as hypertension and diabetes. In this population, obesity nearly doubles the risk of having two or more conditions compared to normal weight. Public health interventions should prioritize weight management and access to care for obese individuals to reduce the overall burden of disease.

In older adults with sarcopenia, those with higher baseline functional reserve (Gait Speed ≥ 0.8 m/s or SPPB = 8) experience significant functional decline over 6 months, whereas those with lower baseline function do not show significant change in gait speed.

For older adults with sarcopenia, functional decline is not uniform. Those who still have some mobility reserve (walking speed ≥ 0.8 m/s) are actively losing function and are at higher risk for rapid decline. Those with very low function may appear stable simply because they have reached a functional floor. Monitoring should focus on those with residual capacity who are losing it.

Sarcopenic Obesity (SO) is associated with significant deterioration in functional exercise capacity (6MWD) over 6 months, even when gait speed changes are not statistically significant.

For older adults with both sarcopenia and obesity, functional decline may manifest as reduced walking distance rather than slower walking speed. Regular assessment of walking capacity (like the 6-minute walk test) is important to detect deterioration in this group.

Short-term body mass manipulation (SBM) in powerlifting should be limited to approximately 3% body mass loss when the weigh-in-to-competition window is two hours, as larger losses impair rehydration capacity and performance.

If you must cut weight for a powerlifting meet with a 2-hour weigh-in, do not lose more than 3% of your body weight. Losing more than this amount makes it physically impossible to rehydrate and refuel enough to perform safely and effectively in the short window available. Focus on water loading and sodium manipulation within this 3% limit rather than extreme dehydration.

Combined obesity medicine and metabolic bariatric surgery care produces more optimal outcomes and reduces costs compared to siloed practice.

Seek a clinic that offers both medical weight loss management and surgical options under one roof or coordinated care plan. This ensures you are evaluated for all treatments, not just one.

Higher adherence to the PURE diet score is significantly associated with lower odds of depression and anxiety in adults at high cardiovascular risk, with the association being statistically significant in women but not in men.

Focus on adding fruits, vegetables, legumes, nuts, fish, and whole-fat dairy to your daily diet. This pattern, known as the PURE diet, is linked to lower risks of depression and anxiety, especially in women. You do not need to strictly eliminate animal products or dairy to see benefits; the key is overall dietary quality and nutrient density rather than extreme restriction.

Virtual weight care programs prescribing a broad range of antiobesity medications alongside behavior change achieve clinically significant weight loss (mean 8.0% at 12 months) in real-world settings, with higher engagement correlating with greater weight loss.

Engage with a structured virtual weight care program that combines medication with behavioral support. Higher engagement with the program (logging weight weekly, interacting with coaches) correlates with greater weight loss (up to 12%). You do not need the most expensive medications to achieve significant results; a broad range of medications, when paired with consistent engagement, can lead to clinically meaningful weight loss.

GLP-1 receptor agonists and dual GIP/GLP-1 agonists cause unintended nutritional complications, including severe caloric restriction (<800 kcal/day), lean body mass loss (approx. 25-45% of total weight loss), micronutrient deficiencies, dehydration, and rare ketoacidosis, necessitating structured dietitian-led monitoring.

If you are taking GLP-1 medications like semaglutide or tirzepatide, do not rely on appetite alone to guide your diet. You are at risk of losing muscle and missing essential nutrients. Aim for at least 1200-1500 kcal/day and 1-1.4 grams of protein per kilogram of body weight daily. Prioritize nutrient-dense foods and stay hydrated. Work with a dietitian to monitor your intake and adjust your plan to prevent fatigue, dizziness, or muscle loss.

High adherence to a Mediterranean diet improves inflammatory biomarkers (triglycerides, hsCRP) in individuals with the TNF rs1800629 GG genotype, demonstrating that dietary patterns can modulate genetic inflammation risk.

If you have the TNF rs1800629 GG genotype, you are genetically predisposed to higher inflammation and triglycerides. Adopting a Mediterranean diet for at least one year can significantly improve these markers, reducing your cardiovascular risk. This is a key example of how diet can counteract genetic inflammation.

Lifestyle interventions (diet and exercise) significantly improve sperm normal morphology and progressive motility in men with obesity, whereas bariatric surgery and pharmacotherapy (metformin/liraglutide) show no clinically significant improvements in semen parameters or DNA damage.

If you are overweight and trying to conceive, focus on sustainable lifestyle changes (diet and exercise) rather than seeking surgical or pharmacological weight loss solutions solely for fertility. Lifestyle changes have been shown to improve sperm morphology and motility, whereas surgery and weight-loss drugs have not shown consistent benefits for semen quality in this population.

Combining tirzepatide with low-energy ketogenic therapy (LEKT) produces significantly greater reductions in hepatic steatosis and liver stiffness than combining tirzepatide with a low-calorie diet (LCD), independent of total body weight loss.

If you have MASLD and are using tirzepatide, adding a structured low-energy ketogenic diet (under 30g carbs, ~1200 kcal) for 12 weeks may reduce liver fat and stiffness more effectively than a standard low-calorie diet, even if your total weight loss is similar. This requires strict adherence and monitoring, ideally under medical supervision, to ensure safety and efficacy.

High-calorie, high-protein nutritional supplementation and specific supplements (L-alanyl-L-glutamine + PUFAs) can counteract lean mass loss and improve quality of life in heart failure patients, potentially mitigating GLP-1RA-induced sarcopenia.

If you are losing muscle on heart failure medication, ask your doctor about high-protein nutritional supplements. Specific combinations like glutamine and fish oil (PUFAs) have been shown to help increase lean body mass and improve how you feel.

Longer-muscle length resistance training (LML-RT) produces greater muscle hypertrophy than shorter-muscle length resistance training (SML-RT).

To maximize muscle growth, prioritize exercises that allow you to train at longer muscle lengths (e.g., deep squats, overhead presses, or lengthened partials). While you can still grow with partial ROM, the evidence suggests that loading the muscle in its stretched position yields superior hypertrophy, particularly in the distal regions of the muscle.

Concomitant use of SGLT2 inhibitors significantly enhances weight loss in patients taking GLP-1 receptor agonists, independent of the specific GLP-1 RA used.

If weight loss stalls on a GLP-1 RA, discuss adding an SGLT2 inhibitor. This study found that using both together significantly improved weight loss outcomes compared to using GLP-1 RAs alone, likely due to complementary mechanisms.

Herbal medicine interventions for obesity exhibit pleiotropic mechanisms, including thermogenesis, inhibition of pancreatic lipase, reduced food intake, and increased lipolysis, mediated by secondary metabolites like flavonoids and saponins.

Herbal medicines for obesity work through multiple pathways, such as boosting metabolism (thermogenesis), blocking fat absorption (lipase inhibition), and reducing appetite. They are not single-target drugs but complex mixtures that may offer a safer profile than prescription weight-loss drugs, though they still require careful monitoring.

GLP-1 receptor agonists, particularly semaglutide and tirzepatide, are associated with an increased risk of non-scarring hair loss (telogen effluvium and androgenetic alopecia), primarily driven by rapid weight loss and nutritional deficits rather than direct drug toxicity.

If you are using semaglutide or tirzepatide and notice hair shedding, it is likely due to rapid weight loss or nutritional deficits rather than permanent drug damage. Ensure adequate protein and micronutrient intake (iron, zinc) and consider slowing dose escalation. The risk is highest with these specific drugs and in females, but often stabilizes as weight loss plateaus.

Higher body mass index (BMI) is associated with lower self-reported physical functioning and overall health-related quality of life (HRQoL) in people with overweight or obesity.

If you have overweight or obesity, your daily physical ability and general health perception are likely lower than average, and this tends to get worse as your BMI increases. This is a measurable health burden, not just a cosmetic issue, and addressing weight may improve your physical functioning.

The presence of cardiovascular (CV) or metabolic comorbidities significantly reduces health-related quality of life (HRQoL) and work productivity in people with overweight or obesity, often more so than BMI alone.

Having overweight or obesity is only part of the story. If you also have heart or metabolic conditions (like diabetes), your quality of life and work productivity are likely significantly lower than someone with the same BMI but no comorbidities. Treating these specific conditions is crucial for your well-being.