Browse the evidence

A 20g collagen hydrolysate/milk protein blend stimulates muscle protein synthesis (MPS) in older men to an equivalent degree as a calorie-matched milk protein blend containing higher essential amino acids, despite lower leucine content.

For older adults looking to maintain muscle, a 20g protein supplement containing a mix of collagen and milk protein is just as effective at stimulating muscle building as a standard milk protein supplement, even if the milk-only version has more leucine. The key advantage is that the collagen blend can be delivered in a smaller volume (125ml vs 200ml), which may be easier to consume for those with reduced appetite.

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.

A six-month home-based physical activity and nutrition intervention produces significant improvements in metabolic syndrome parameters, but these benefits largely plateau and do not significantly improve further during an 18-month follow-up without additional booster interventions.

If you start a health program, expect the biggest changes in the first 6 months. To keep those gains, you cannot just stop. You need a 'maintenance mode' plan with regular check-ins, even if they are brief, to prevent your habits from slowly drifting back to old patterns.

Urban design that promotes physical activity and provides green space reduces cardiovascular mortality and risk factors, whereas urban environments that hinder activity and lack green space increase risk.

Prioritize living in or visiting areas with significant tree canopy and green space. If you live in a dense urban area, seek out parks and green corridors. These spaces not only encourage physical activity but also mitigate heat stress and air pollution, directly lowering cardiovascular risk.

Achieved weight loss, rather than dietary protein quantity or red meat inclusion, is the primary driver of improved glucose control and body composition in adults with type 2 diabetes.

If you have Type 2 Diabetes, focus on losing weight rather than obsessing over whether your protein intake is 'high' or if you eat beef. This study shows that losing weight improves your blood sugar and body composition regardless of whether you eat a high-protein diet with beef or a normal-protein diet without it. Choose a dietary pattern you can stick to that creates a calorie deficit, and the health benefits will follow.

Once-weekly subcutaneous semaglutide 2.4 mg significantly improves weight-related quality of life (WRQOL) and health-related quality of life (HRQOL) in East Asian adults with overweight or obesity, specifically enhancing physical functioning, psychosocial well-being, and total quality of life scores compared to placebo.

If you are an East Asian adult with overweight or obesity, once-weekly semaglutide 2.4 mg, combined with a modest 500-kcal daily calorie deficit and 150 minutes of weekly physical activity, has been shown to significantly improve your physical functioning, psychosocial well-being, and overall quality of life compared to placebo. This treatment helps you feel better in social situations and perform daily activities more comfortably.

Vitamin E supplementation (800 IU daily) improves steatohepatitis, hepatic steatosis, and inflammation in adults with MASH who do not have diabetes, but does not improve fibrosis.

If you have MASH and do not have diabetes, your doctor may recommend 800 IU of Vitamin E daily. This dose has been shown to reduce liver inflammation and fat over 96 weeks, though it does not reverse scarring (fibrosis).

Discontinuation of GLP-1 receptor agonists leads to significant weight regain (approx. two-thirds of lost weight) and loss of cardiometabolic benefits, driven partly by a surge in ghrelin.

If you stop taking GLP-1 medications, you will likely regain most of the weight you lost. This is a physiological response (ghrelin surge), not a failure of willpower. To maintain weight loss, you must either stay on the medication indefinitely or switch to a more durable intervention like surgery.

Tirzepatide treatment produces similar improvements in glycemic control (HbA1c) and body weight in patients with early-onset type 2 diabetes (diagnosed before age 40) compared to those with later-onset type 2 diabetes.

If you were diagnosed with type 2 diabetes before age 40, you may have heard that your condition is harder to treat. This analysis of major clinical trials shows that the medication tirzepatide works just as well for you as it does for older patients, significantly lowering blood sugar and body weight. You should discuss this option with your doctor, as it addresses the specific metabolic challenges often seen in early-onset diabetes.

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.

Significant initial weight loss (decrease in BMI) is a strong predictor of high adherence to liraglutide treatment.

If you experience significant weight loss in the first few months of liraglutide treatment, you are much more likely to stick with the medication long-term. This positive feedback loop is a key factor in maintaining adherence.

Higher socioeconomic status and non-smoking status are significantly associated with higher adherence to liraglutide treatment.

Patients with higher income/education levels and those who do not smoke are more likely to adhere to their liraglutide prescription. Addressing financial barriers and supporting smoking cessation may improve adherence rates.

Semaglutide 2.4 mg weekly reduces all-cause mortality and major adverse cardiovascular events in overweight/obese patients with preexisting cardiovascular disease but no diabetes, yet remains cost-ineffective at current pricing relative to standard care.

For a patient with heart disease and obesity but no diabetes: Semaglutide 2.4mg weekly significantly lowers your risk of heart attack, stroke, and death compared to standard care. However, because the drug is expensive, public health systems may not cover it unless the price drops. You should discuss the clinical benefits with your doctor, but be aware that insurance coverage might be denied or require prior authorization due to cost-effectiveness thresholds.

Long-term use of FDA-approved antiobesity medications (AOMs) for at least 112 days is associated with a statistically significant reduction in total health care costs and non-AOM medication costs by the second year of treatment compared to no treatment.

If you have obesity and are considering FDA-approved weight loss medications, discuss long-term coverage with your insurer. While the medication itself costs money, studies show that maintaining use for at least 112 days (approx. 4 months) can lead to significant reductions in other medical bills (like prescriptions for diabetes or blood pressure) by the second year, potentially saving money overall compared to not treating the obesity.

GIPR agonism mitigates the gastrointestinal adverse effects (nausea/vomiting) associated with GLP-1R agonism, thereby allowing for higher maximal tolerated doses of GLP-1-based therapies.

If you are struggling with nausea on a GLP-1 drug, switching to a combination GIP/GLP-1 drug might allow you to take a higher dose without more side effects. The GIP component helps cancel out the nausea caused by the GLP-1 component.

Tirzepatide, a dual GLP-1/GIP receptor agonist, demonstrates superior kidney and cardiovascular benefits compared to GLP-1 RAs alone, including significant reductions in albuminuria and eGFR decline.

Tirzepatide (Mounjaro/Zepbound) is a newer option that targets both GLP-1 and GIP hormones. It may offer better kidney and heart protection than older GLP-1 drugs. Discuss with your doctor if you have kidney disease, as it can slow kidney function decline significantly. It is also highly effective for weight loss.

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.

Roux-en-Y gastric bypass (RYGB) reduces all-cause and cardiovascular mortality in obese individuals with type 2 diabetes primarily through weight reduction (BMI decrease), rather than through improvements in glycemic control (HbA1c), blood pressure, or lipid profiles.

For obese individuals with type 2 diabetes, Roux-en-Y gastric bypass significantly reduces the risk of death, primarily by lowering body weight. While blood sugar, blood pressure, and cholesterol often improve after surgery, these improvements do not appear to be the main reason for the longevity benefit. The weight loss itself is the key driver, acting as a proxy for reduced mechanical stress and inflammation. Therefore, achieving and maintaining significant weight loss is critical for mortality reduction in this population.

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.

Adding exercise to a low-carbohydrate diet improves cardiorespiratory fitness (VO2peak) and reduces systolic blood pressure, but does not provide additional weight loss benefits compared to the low-carbohydrate diet alone.

If you are doing a low-carb diet, adding exercise won't necessarily make you lose weight faster than the diet alone. However, it will significantly improve your heart health, blood pressure, and mental well-being. Do exercise for these health benefits, not just for extra weight loss.

Oral ingestion of 15g essential amino acids (EAA) stimulates a greater insulin response compared to intravenous infusion of an equivalent dose, primarily mediated by the incretin hormone GIP, and this mechanism remains intact in older adults.

Consuming 15g of essential amino acids orally triggers a stronger insulin response than injecting the same amount, driven by gut hormones (specifically GIP). This 'incretin effect' helps manage blood sugar and remains effective in older adults, suggesting EAA supplementation can support metabolic health across the lifespan.

The brain utilizes two distinct, opponent neural networks to process food cues: a Limbic network that automatically encodes hedonic value (pleasantness/appetite), and a Prefrontal network that encodes regulatory information (healthfulness, processing level, and self-control requirements).

When you see food, your brain automatically splits the information: one part tells you how good it tastes (Limbic), and another tells you how processed/healthy it is (Prefrontal). To make better choices, consciously engage the Prefrontal network by focusing on the food's processing level or health attributes, rather than just fighting the taste. This leverages the brain's natural regulatory architecture.

GLP-1 receptor agonists (GLP-1RAs) induce significant weight loss, leading to improved physical functioning, daily living capacity, and mental well-being, despite common gastrointestinal side effects.

GLP-1RAs are effective for weight loss and improving daily functioning. Expect gastrointestinal side effects like nausea, which often subside after a few weeks. The benefits of weight loss and improved mobility often motivate patients to persist despite these side effects.