Browse the evidence

Post-exercise protein ingestion is required to shift net protein balance to positive and support muscle hypertrophy, with a window of opportunity extending up to 24 hours after resistance exercise.

To build muscle, you must eat protein after your workout. Waiting too long or skipping it means your body breaks down muscle as fast as it builds it. Aim to consume protein within a few hours of finishing your resistance training.

Resistance exercise increases muscle protein synthesis (MPS) for up to 48 hours, creating a 'window of anabolic opportunity' where the muscle is more sensitive to protein intake.

Your muscles stay sensitive to protein for up to 24 hours after training. You don't need to chug a shake the second you put the weights down, but eating protein within a few hours is beneficial.

Long-term weight gain (≥7 kg) and significant abdominal fat accumulation (waist gain ≥14.6 cm) are strong, independent predictors of type 2 diabetes risk in men, with weight gain accounting for 56% of incident cases.

For men, maintaining a stable weight and specifically preventing abdominal fat gain (measured by waist circumference) is critical for preventing type 2 diabetes. A gain of 7kg or more, or a waist increase of 2.5cm or more over 9 years, significantly elevates risk. Focus on preventing waist expansion, not just total weight, as abdominal fat accumulation is a strong independent predictor.

Bariatric surgery (Roux-en-Y gastric bypass or laparoscopic adjustable gastric banding) combined with low-level lifestyle intervention achieves significantly higher rates of Type 2 Diabetes (T2DM) remission and greater weight loss compared to intensive lifestyle intervention alone in obese adults with BMI 30-40.

For individuals with obesity (BMI 30-40) and Type 2 Diabetes, bariatric surgery (specifically Roux-en-Y gastric bypass or laparoscopic adjustable gastric banding) is significantly more effective than lifestyle changes alone in achieving diabetes remission and substantial weight loss. While lifestyle interventions are important, they rarely lead to remission on their own in this population. Surgery should be considered a viable and superior option for disease management, particularly for those who have not achieved remission through lifestyle changes.

Roux-en-Y gastric bypass (RYGB) results in greater weight loss and glycemic improvement compared to laparoscopic adjustable gastric banding (LAGB) and lifestyle intervention alone.

If choosing between surgical options for obesity and Type 2 Diabetes, Roux-en-Y gastric bypass (RYGB) provides greater weight loss and better glycemic control than laparoscopic adjustable gastric banding (LAGB). While LAGB is less invasive and reversible, RYGB is more effective for achieving remission and significant weight reduction.

A high-protein (28-30% energy), high-monounsaturated fat diet during energy restriction significantly reduces LDL cholesterol and total/abdominal fat mass in women with type 2 diabetes compared to a lower-protein diet, without compromising glycemic control.

For women with Type 2 Diabetes looking to lose fat and improve cholesterol, a diet emphasizing high protein (approx. 30% of calories) and monounsaturated fats (like olive oil, nuts) while restricting calories to around 1,600 per day is more effective for lowering bad cholesterol (LDL) and losing belly fat than a standard lower-protein diet. This benefit was specific to women in this study; men lost similar amounts of fat on both diets. Glycemic control improved on both diets, so the HP diet offers added cardiovascular benefits without worsening blood sugar management.

A low-glycemic load diet improves cardiovascular risk factors (HDL cholesterol and triglycerides) more effectively than a low-fat diet in the general obese population, regardless of insulin secretion status.

To improve your heart health markers like HDL cholesterol and triglycerides, focus on reducing the glycemic load of your diet (eating more nonstarchy vegetables, legumes, and whole fruits) rather than just cutting fat. You can include healthy fats like nuts and oils, which this approach allows, and see better improvements in these specific risk factors compared to a strict low-fat diet.

Increasing muscle time under tension (TUT) during low-intensity resistance exercise (30% 1RM) to failure stimulates greater acute mitochondrial and sarcoplasmic protein synthesis (0-6h) and a delayed, robust myofibrillar protein synthesis response (24-30h) compared to work-matched rapid cadence exercise.

To maximize muscle growth, you don't always need to lift heavy weights. If you use lighter weights (around 30% of your max), you can achieve similar muscle-building signals by slowing down your reps (e.g., 6 seconds up, 6 seconds down) and continuing until you can't do another rep. This approach shifts the muscle-building benefits to a peak 24-30 hours after your workout, so consistency over time is more important than how heavy the weight is on any single day. Ensure you consume protein (e.g., 20g) after your workout to support this delayed synthesis.

Regular physical activity over time significantly reduces the risk of developing metabolic syndrome, independent of weight gain and demographic factors.

Maintain a level of physical activity that is above average for your age group consistently over many years. This long-term consistency is a powerful protector against metabolic syndrome, regardless of whether you lose weight.

Mechanical load is the primary initiating stimulus for skeletal muscle hypertrophy following resistance exercise, with loads as low as 30% of 1RM being sufficient to trigger near-maximal hypertrophic gains when taken to failure.

To maximize muscle growth, you do not need to lift extremely heavy weights. Research indicates that using loads as low as 30% of your one-repetition maximum can produce near-maximal hypertrophy, provided you train close to muscular failure. Focus on consistent mechanical tension and volume rather than just maximizing the weight on the bar. This approach may reduce injury risk while still effectively stimulating muscle growth.

Consuming five or more servings daily of a variety of vegetables and fruits reduces the risk of lung, oral, esophageal, stomach, and colon cancers, whereas high-dose beta-carotene supplementation in smokers increases lung cancer risk.

Aim for five or more servings of vegetables and fruits every day, spread across meals and snacks. Prioritize variety and whole forms (fresh, frozen, canned) over supplements. If you smoke, strictly avoid high-dose beta-carotene supplements as they may increase lung cancer risk.

Engaging in at least 30 minutes of moderate physical activity on five or more days per week reduces the risk of breast and colon cancers, with 45 minutes or more providing further enhancement.

Aim for at least 30 minutes of moderate activity (like brisk walking) on five or more days a week. If you can, increase this to 45 minutes of moderate-to-vigorous activity for greater breast and colon cancer protection. Break it up into 20-30 minute sessions if needed.

Weight loss improves quality of life, mobility, physical function, and remission of obstructive sleep apnoea in T2DM patients, independent of cardiovascular event rates.

Losing weight will likely improve your sleep, mobility, and daily function, even if it doesn't change your heart disease statistics. These quality-of-life improvements are a major benefit of weight loss.

Whey protein stimulates muscle protein synthesis (MPS) to a greater extent than casein or soy due to its rapid digestibility and high leucine content, leading to superior gains in lean body mass and strength when combined with resistance training.

If you lift weights, choose whey protein for your post-workout shake. It digests fast and spikes leucine, which triggers muscle growth better than slower proteins like casein. Aim for about 25 grams of whey post-workout. If you are older, you might need 35-40 grams to get the same benefit because your body becomes less sensitive to protein as you age.

Whey protein supplementation during caloric restriction promotes 'high-quality' weight loss by maximizing fat loss while sparing lean body mass and resting metabolic rate.

When you are dieting to lose fat, add whey protein to your meals. It helps you lose more fat and keep more muscle than just eating a standard low-calorie diet. This protects your metabolism and makes it easier to keep the weight off. Aim for higher protein intake (over 1.25 g/kg/day) during your diet.

Older adults require higher doses of whey protein (35-40g) per meal to maximally stimulate muscle protein synthesis due to 'anabolic resistance' associated with aging.

If you are over 65, your body needs more protein to build muscle. Instead of one small shake, split your whey protein into 25-30 gram doses at breakfast and lunch. This helps overcome the natural slowdown in muscle building that happens with age.

Resistance exercise combined with protein ingestion sustains myofibrillar protein synthesis for up to 5 hours, whereas protein ingestion alone at rest produces only a transient (peaking at 3 hours) stimulation of both myofibrillar and sarcoplasmic protein synthesis.

To maximize muscle growth, combine resistance exercise with protein intake. Exercise extends the duration of muscle protein synthesis specifically for contractile (myofibrillar) proteins for up to 5 hours, whereas eating protein alone only stimulates synthesis transiently (peaking at 3 hours) for both contractile and cellular proteins. Focus on getting adequate protein (e.g., 25g) after your workout to leverage this sustained synthetic window.

A 25% caloric restriction for 6 months in non-obese humans significantly reduces fasting insulin, core body temperature, and oxidative DNA damage, while improving insulin sensitivity and reducing cardiovascular disease risk factors.

To improve your metabolic health and longevity markers, reduce your daily calorie intake by 25% below what you need to maintain your current weight for at least 6 months. This approach has been shown to significantly lower fasting insulin, reduce oxidative DNA damage, and improve cardiovascular risk factors without negatively impacting mood or triggering eating disorders in healthy, non-obese adults.

High levels of physical activity (60-90 minutes/day of moderate-intensity exercise) are required to maintain significant weight loss, whereas physical activity contributes minimally to initial weight loss compared to dietary restriction.

If you have lost a significant amount of weight, do not stop exercising. To keep it off, you likely need to burn 2,500-2,800 kcal per week through activity (roughly 60-90 minutes of brisk walking daily). This is much higher than the activity needed just to prevent gaining weight in the first place. You can achieve this through short bouts of activity throughout the day rather than one long session.

High-intensity interval training (specifically supramaximal bouts) improves lactate transport capacity and buffering ability, which can enhance endurance performance as effectively as long-duration aerobic training.

If you are an experienced endurance athlete, incorporate short, high-intensity intervals (like 12x30s sprints) twice a week. This can significantly boost your body's ability to handle lactate and buffer acid, improving your race performance just as much as longer, slower interval sessions, without requiring excessive time.

Creatine supplementation combined with resistance training amplifies the increase in satellite cell and myonuclei numbers in human skeletal muscle, leading to enhanced muscle fiber hypertrophy compared to training alone or with protein supplementation.

If you are strength training, adding creatine monohydrate (5g daily after a short loading phase) helps your muscles build more structural nuclei (myonuclei) compared to training alone. This structural change supports greater long-term muscle growth. You do not need to take massive doses; 5g/day is sufficient when combined with resistance training.

Performing three sets of resistance exercise produces a superior and sustained increase in myofibrillar protein synthesis (MPS) compared to one set, maintaining elevated MPS for at least 24 hours post-exercise.

If you want to maximize muscle growth potential from a single workout, perform three sets of exercises rather than just one. While one set will trigger some immediate protein synthesis, it fades within a day. Three sets sustain the anabolic signal for at least 24 hours, giving your muscles a longer window to repair and grow, especially when combined with protein intake.

Age-related declines in skeletal muscle mitochondrial function and mass are primarily driven by physical inactivity rather than chronological aging itself, and these declines can be attenuated or reversed by exercise and caloric restriction.

If you are older, your mitochondrial health is not doomed by age alone. The key lever is physical activity. Regular exercise, particularly resistance training, can reverse or prevent the decline in mitochondrial function typically associated with aging. Focus on staying active rather than accepting decline as inevitable.

Ingesting 6 mg/kg of caffeine either 1 hour before or distributed throughout endurance exercise enhances time trial performance by approximately 3%, regardless of timing.

For endurance events, taking 6 mg of caffeine per kg of body weight is effective for boosting performance. You can take this entire dose 1 hour before starting, or split it into small doses (1 mg/kg) every 20 minutes during the event. Both methods result in roughly a 3% improvement in time trial performance. If you prefer, drinking Coca-Cola (decaffeinated or regular) during the last part of your event can also provide a similar boost, likely due to the caffeine and carbohydrate content.