Browse the evidence

Omega-3 fatty acid supplementation (EPA/DHA) potentiates muscle protein synthesis and increases lean mass/strength in older adults, particularly when baseline protein intake is suboptimal.

Older adults aiming to build or maintain muscle should consider supplementing with 1.86g EPA and 1.50g DHA daily. This is most effective if your overall protein intake is not already maximized, as omega-3s help sensitize muscle to protein stimulation. Ensure you are getting adequate protein from food as well.

When training volume is not equated, non-failure training often results in greater strength gains than failure training due to the ability to perform more total work.

If you choose not to train to failure, ensure you perform enough sets to match the total volume of a failure-trained program. Failure training often limits total reps per set, so non-failure training can yield better strength gains simply by allowing more total work to be performed.

Ketogenic diets significantly improve glycemic control and reduce insulin requirements in patients with Type 2 Diabetes, allowing for medication discontinuation or reduction in a subset of patients.

If you have Type 2 Diabetes, a ketogenic diet (<20g carbs/day) can significantly lower your HbA1c and reduce your need for medication. However, you must work with your doctor to adjust your insulin or oral medications to avoid dangerous hypoglycemia. Do not stop medications abruptly without monitoring your blood glucose.

Consumption of ultra-processed foods (UPFs) causes increased energy intake and weight gain compared to whole foods, independent of matched macronutrients.

Prioritize whole, minimally processed foods. Even if you match the calories and macros, ultra-processed foods are engineered to override your body's natural fullness signals, leading you to eat significantly more and gain weight.

Step reduction (SR) to <1,500 steps/day for two weeks causes significant declines in muscle protein synthesis (MPS), leg lean mass, and insulin sensitivity in older adults, with incomplete recovery upon return to habitual activity.

If you are older, do not underestimate the impact of even mild inactivity, such as reducing your steps to under 1,500 per day for a couple of weeks due to illness or weather. This causes your muscles to stop building protein and your blood sugar control to worsen. Crucially, your body may not fully bounce back to its previous state even after you start moving normally again. To protect your muscle, try to maintain your usual step count even during minor illnesses or bad weather, or use countermeasures like light resistance exercise and high-quality protein.

Resistance exercise (RT), even at low loads and volumes, performed during step reduction protects older adults against muscle atrophy and preserves muscle protein synthesis.

If you are an older adult who is forced to reduce your activity (e.g., due to illness or injury) and cannot walk your usual steps, do not just sit still. Perform low-load resistance exercises (like light leg extensions or curls) 3 times a week. Using light weights (about 30% of your max effort) for 20-25 reps can help protect your muscle mass and keep your muscles ready to grow when you recover.

High-quality protein supplementation (whey) during and after step reduction improves muscle protein synthesis recovery compared to low-quality protein (collagen) or no specific supplementation.

When recovering from a period of reduced activity, ensure you are eating high-quality protein (like whey, eggs, or meat) rather than just any protein source. In a study, older adults who took whey protein recovered their muscle-building capacity after inactivity, while those who took collagen (which lacks some essential amino acids) did not. Aim for about 1.6 grams of protein per kilogram of body weight daily, prioritizing high-quality sources.

Older adults (65+ years) require higher protein intakes (1.2–1.4 g/kg/day) than the standard RDA (0.8 g/kg/day) to maintain lean body mass and stimulate muscle protein synthesis.

If you are over 65, aim for 1.2 to 1.4 grams of protein per kilogram of body weight every day. This is higher than the standard recommendation of 0.8 g/kg. This higher intake helps counteract the natural loss of muscle strength and mass associated with aging. Ensure you are also engaging in resistance exercise to maximize these benefits.

Whey protein isolate is superior to other protein sources for stimulating muscle protein synthesis in older adults due to its high leucine content.

For older adults, whey protein isolate is an excellent choice for stimulating muscle growth because it is rich in leucine, the key trigger for muscle synthesis. If you cannot consume dairy, combine plant proteins to ensure adequate leucine intake.

Replacing ultra-processed foods with less processed alternatives significantly reduces health risks, including metabolic syndrome, bisphenol A exposure, and vitamin deficiencies, even with modest substitution.

You do not need to completely overhaul your diet to improve your health. Simply identifying and replacing just one or a few of your most frequently consumed ultra-processed items with less processed alternatives (like swapping sugary cereals for whole grain ones) can significantly lower your risk of metabolic syndrome and improve vitamin levels. Focus on high-calorie items that have clear, less-processed counterparts.

Adherence to a Mediterranean diet reduces the risk of developing abdominal obesity (increased waist circumference) in normal weight individuals, driven primarily by low red meat intake and high vegetable consumption.

To prevent belly fat accumulation, focus on the entire Mediterranean pattern: eat plenty of vegetables, limit red meat and sugary drinks, and choose whole grains. Simply adding 'healthy' fats without addressing other dietary components may not provide the same protection against abdominal obesity.

A theory-based mobile app intervention (Vegethon) significantly increases daily vegetable consumption in overweight adults attempting weight loss maintenance compared to a wait-listed control.

If you are overweight and trying to maintain weight loss, use a dedicated vegetable-tracking app like Vegethon. Commit to just 1-2 minutes a day to log your intake. The app uses gamification (points, challenges, social comparison) to make the habit stick. This simple behavioral tool can add roughly 2 servings of vegetables to your daily diet, which is a significant health improvement.

High adherence to a personalized dietary program significantly reduces LDL cholesterol and apolipoprotein B, whereas standard dietary advice does not, suggesting personalization may be necessary for lipid management in certain individuals.

If you have high cholesterol, a personalized diet that accounts for your specific biological response to food may be more effective at lowering LDL and ApoB than standard guidelines, provided you adhere closely to the personalized advice.

A personalized dietary program favorably shifts gut microbiome composition, increasing the relative abundance of species associated with favorable cardiometabolic health, compared to standard dietary advice.

A personalized diet that considers your biological response to food may be more effective at improving your gut microbiome composition, specifically by increasing beneficial species, compared to standard dietary guidelines.

Combining sodium bicarbonate with creatine or beta-alanine produces additive ergogenic effects on exercise performance.

If you are already taking creatine or beta-alanine, adding sodium bicarbonate (0.3 g/kg) before high-intensity events may provide additional performance benefits. Note that combining with caffeine or nitrates is unclear.

Athletes engaged in moderate to high intensity training lasting over 12 hours per week should consume 8-10 g of carbohydrates per kg of body weight daily to maximize glycogen storage and performance.

If you train hard for more than 12 hours a week, aim for 8 to 10 grams of carbs for every kilogram of your body weight each day. If you struggle to eat that much food, switch to denser carb sources like sports drinks or gels instead of just eating large amounts of vegetables or grains.

Post-exercise carbohydrate ingestion of 1.0-1.5 g/kg/hour is sufficient to maximize muscle glycogen resynthesis rates.

After a hard workout, eat or drink 1-1.5 grams of carbs for every kg of your body weight each hour for up to 6 hours. Split this into small amounts every 30 minutes rather than eating it all at once for better absorption.

Athletes should consume 1.4-2.8 g/kg of body weight of protein daily, depending on their specific training goals and type of exercise.

Eat 1.4 to 2.8 grams of protein per kilogram of body weight every day. If you are strength training, aim for the higher end (up to 2.8 g/kg). If you are just maintaining muscle, 1.4-2.0 g/kg is sufficient.

High consumption of ultra-processed foods (UPF) is causally associated with increased risk of obesity, type-2 diabetes, cardiovascular disease, and all-cause mortality, primarily through mechanisms of energy density, nutrient displacement, and gut microbiome alteration.

Prioritize minimally processed foods over ultra-processed options. The degree of processing itself contributes to weight gain and disease risk, independent of calorie counts. Focus on whole grains, vegetables, and unprocessed proteins to reduce exposure to additives, high sodium, and low fiber.

Consuming 0.4 g/kg/meal of protein across at least four meals daily maximizes muscle protein synthesis and lean tissue accretion in resistance-trained individuals.

To build muscle, aim for 0.4 grams of protein per kilogram of body weight in each of your meals. If you weigh 70kg, eat about 28g of protein per meal. Spread this across at least four meals daily. This strategy ensures your muscles receive a steady supply of amino acids for growth, avoiding the myth that high doses per meal are wasted.

Resistance training produces comparable muscle hypertrophy across a wide spectrum of loading zones (heavy, moderate, and light loads) provided sets are performed to or near muscular failure.

You do not need to stick to a specific rep range like 8-12 to build muscle. You can use heavy weights (fewer reps) or light weights (more reps) as long as you perform your sets close to failure. Moderate loads (9-15 reps) are recommended as a practical default because they are time-efficient and easier on your joints, but varying your load can be beneficial.

Time-efficient strength training can be achieved by prioritizing bilateral, multi-joint exercises with a minimum of 4 weekly sets per muscle group using a 6–15 RM loading range.

To save time while building strength and muscle, focus on compound exercises like squats, presses, and rows. Aim for at least 4 sets per muscle group each week, using weights that allow 6-15 reps. You don't need to train every day; spreading these sets across 1-3 sessions is sufficient.

Bariatric surgery resolves Polycystic Ovary Syndrome (PCOS) symptoms, including menstrual irregularities and hirsutism, and improves fertility in obese women, largely through weight loss and hormonal normalization.

If you are obese and have PCOS, bariatric surgery can significantly improve your menstrual cycles, reduce excess hair growth, and increase your chances of conceiving. This is achieved through hormonal normalization and weight loss.

Twice-daily consumption of a multi-ingredient supplement containing 30g whey protein, 2.5g creatine, 500 IU vitamin D, 400mg calcium, and 1500mg n-3 PUFA stimulates significant gains in lean body mass and strength in healthy older men, independent of exercise.

For healthy older men, taking a specific mix of whey protein, creatine, vitamin D, calcium, and fish oil twice daily can build muscle and strength even without exercise. Adding resistance and high-intensity interval training on top of this supplement yields even greater strength gains. This approach addresses the high variability in how older adults respond to single nutrients.