Browse the evidence

Completely plant-based diets scaled to meet the high caloric demands of resistance training provide sufficient protein (1.8 g/kg/day) and leucine (2.75 g/meal) to maximize muscle hypertrophy and strength in male bodybuilders without the need for protein supplements.

If you are a male bodybuilder doing resistance training, you do not need protein supplements to build maximum muscle if you eat a whole-food, plant-based diet. Simply eat enough calories to support your training volume (a caloric surplus). This will naturally provide enough protein (approx 1.8g per kg of body weight) and leucine (approx 2.75g per meal) to maximize muscle growth. Focus on legumes, grains, and nuts to hit these numbers.

A whole-foods, plant-based (WFPB) dietary intervention significantly improves BMI, systolic blood pressure, total cholesterol, and LDL levels in patients with metabolic disease in underserved communities.

Adopt a whole-foods, plant-based diet through a structured program involving weekly group visits and cooking demos. Focus on high-fiber, low-fat plant foods without eliminating any food categories entirely. Aim for 90-95% of calories from plants, moving at your own pace. This approach has been shown to significantly lower BMI, blood pressure, and cholesterol in underserved populations, even when meals cost less than $3 per serving.

Post-exercise consumption of 20–30 g of fast-digesting protein (e.g., whey) maximizes muscle protein synthesis and accelerates recovery in weightlifters.

After your weightlifting session, consume 20-30 grams of whey protein within 30 minutes. This specific amount and fast-absorbing source are identified as optimal for triggering muscle protein synthesis and speeding up recovery.

Pre-training carbohydrate intake (1-4 g/kg) 2-3 hours before training optimizes glycogen stores and delays fatigue in weightlifters.

Eat a meal rich in carbohydrates (1-4 grams per kg of body weight) 2-3 hours before your workout. Choose easily digestible sources like oatmeal or bananas to ensure you have energy without stomach issues.

To preserve skeletal muscle mass during obesity treatment with obesity medications (OMs) or caloric restriction, patients should consume 0.8 g/kg/day of high-quality protein (minimum 60-80 g/day), with higher requirements (1.0-1.5 g/kg/day) for older adults and those with chronic diseases.

If you are losing weight with medication or diet, prioritize protein. Aim for 0.8 grams of protein per kilogram of your body weight daily, or at least 60-80 grams. If you are older or have chronic health conditions, aim higher (1.0-1.5 g/kg). Combine this with resistance exercise to protect your muscle.

A holistic primary care model combining carbohydrate reduction (targeting <130 g/day), health coaching, and community support significantly reduces HbA1c and achieves diabetes reversal or remission in patients with type 2 diabetes and prediabetes.

To manage type 2 diabetes or prediabetes, reduce your daily carbohydrate intake to below 130 grams, focusing on whole foods. Engage with a health coach for behavioral support and join community groups for peer encouragement. Monitor your HbA1c regularly with your doctor, and be prepared for potential medication adjustments as your blood sugar improves. This approach has been shown to reverse diabetes in a significant portion of patients in real-world settings.

Optimizing within-day carbohydrate distribution is critical for rugby players with congested schedules, as inadequate post-training carbohydrate intake may compromise substrate availability for subsequent evening sessions.

For rugby players training twice a day, when you eat carbohydrates matters as much as how much. The study showed that despite intervention, players didn't improve their post-morning training carb intake, and actually ate less carbs later in the day. This suggests that without specific guidance, athletes may neglect refueling between sessions, potentially impacting evening performance. Prioritize quick carbs immediately after morning training to fuel the evening session.

High-protein diets (25-30% of calories) preserve lean muscle mass and improve metabolic parameters like insulin sensitivity during weight loss.

Increase protein intake to 25-30% of your daily calories to preserve muscle and improve metabolic health. Ensure you consume high-quality protein sources and balance with carbs and fats.

A 30-day ketogenic diet (KD) with adequate protein intake (1.8 g/kg/day) reduces body fat and visceral adipose tissue in semi-professional soccer players without compromising muscle mass, maximal strength, or intermittent aerobic performance.

If you are a semi-professional soccer player looking to lose fat quickly, a 30-day ketogenic diet can work without hurting your strength or performance. Key requirements: 1) Keep carbohydrates under 30g/day. 2) Eat 1.8 grams of protein per kilogram of body weight daily. 3) Maintain your normal training schedule. 4) Use supplements or specific foods to help with adherence and electrolyte balance. Monitor your ketones to ensure you are in ketosis.

A 4-week non-calorie-restricted ketogenic diet significantly reduces body weight, BMI, and abdominal adiposity (waist circumference) in overweight/obese young females without impairing cardiorespiratory fitness.

If you are an overweight young woman, switching to a ketogenic diet for 4 weeks can help you lose weight and reduce belly fat without needing to count calories or exercise more. You will eat less carbs and more fat, but keep your energy levels for daily activities. Expect to lose about 3kg and reduce your waist size by 4cm. Monitor your ketones to ensure you are in ketosis.

Post-bariatric surgery success (defined as >50% excess weight loss) is significantly associated with maintaining carbohydrate intake below 173g/day and fat intake below 52.5g/day at 12 months, alongside a total caloric intake under 1523 kcal/day.

After bariatric surgery, hitting your weight loss goals depends heavily on what you eat, not just how much. At one year, aim for less than 1523 calories, keep carbs under 173 grams, and fat under 52.5 grams. Crucially, ensure you are eating more than 86.5 grams of protein daily. This specific balance of macros is what separates successful long-term weight loss from failure.

Increasing dietary protein intake to 1.0–1.2 g/kg/day helps compensate for skeletal muscle loss (sarcopenia) during weight loss in middle-aged and older women.

If you are trying to lose weight, aim for 1.0 to 1.2 grams of protein per kilogram of your body weight each day. This higher amount helps protect your muscle mass from being lost along with fat, which is a common issue for women after menopause.

Nutrient intake and timing should be periodized in relation to exercise and the competition calendar to promote physiological adaptations and performance capacity.

Change what and when you eat based on your training schedule. Eat more carbs and calories during high-volume/high-intensity blocks. Reduce intake slightly during rest or low-volume phases to manage body composition without compromising health.

Adopting a hypocaloric diet with reduced fat, low carbohydrates, high protein, and increased fiber helps mitigate weight gain during lockdown.

To prevent weight gain, eat smaller portions and focus on high-protein, low-carb foods with plenty of fiber. Reduce fat intake. This helps manage hunger and prevents obesity-related risks.

Older adults require higher protein intake (1.4-1.6 g/kg/day) than the standard RDA (0.8 g/kg/day) to maintain muscle mass and bone health.

Increase your daily protein intake to 1.4-1.6 grams per kilogram of body weight to help preserve muscle and bone as you age.

Vegan athletes can achieve satisfactory dietary needs and performance outcomes through strategic food selection and supplementation, despite inherent challenges in protein quality and micronutrient density.

To succeed as a vegan athlete, prioritize total protein intake (aim for 1.4-2.0 g/kg daily, higher if cutting weight) and ensure you are eating enough calories to support your training volume. Focus on high-protein plant foods like lentils, beans, tofu, and soy. Supplement with Vitamin B12 and consider a microalgae-based Omega-3 supplement to ensure adequate EPA/DHA levels, as plant-based ALA conversion is inefficient.

High intake of red meat, sweets, and fried foods increases the risk of insulin resistance and type 2 diabetes, whereas consumption of fruits and vegetables is inversely correlated with T2DM risk.

Reduce consumption of red meat, sweets, and fried foods to lower insulin resistance risk. Increase intake of fruits and vegetables, which provide protective fiber and antioxidants. Note that while fruits are protective, refined grains like white rice may still increase risk.

Adherence to a Mediterranean-style dietary pattern, characterized by high intake of fruits, vegetables, fish, and olive oil, is associated with improved glucose metabolism and a decreased risk of type 2 diabetes and cardiovascular disease.

Adopt a Mediterranean-style diet rich in fruits, vegetables, fish, and olive oil. This pattern is associated with improved glucose metabolism and reduced risk of T2DM and cardiovascular disease. Focus on the quality of fats (olive oil) and whole foods.

Dietary interventions for sarcopenic obesity should prioritize increased protein intake (1-1.5 g/kg/day) and chronic (not acute) caloric restriction combined with resistance training to prevent muscle loss during weight loss.

For sarcopenic obesity, do not just cut calories. Eat 1.2-1.5 grams of protein per kilogram of body weight daily and engage in resistance training. This combination helps lose fat while keeping muscle, which is essential for metabolic health.

Adherence to a plant-based diet significantly improves glycemic control (HbA1c), psychological well-being, and quality of life in adults with type 2 diabetes compared to standard diabetic guidelines.

For adults with Type 2 Diabetes, switching to a plant-based diet (focusing on whole plant foods and minimizing animal products) for at least 3 weeks can significantly improve blood sugar control (HbA1c), reduce depression, and improve quality of life compared to standard dietary advice. Adherence is often higher because the diet feels less restrictive than standard diabetic guidelines.

Consuming carbohydrates above 65% of total energy intake reduces the odds of having a high Triglyceride-Glucose (TyG) index, while consuming lipids below 25% of total energy also reduces the odds of a high TyG index.

For patients with heart disease, dietary composition matters for metabolic health. This study suggests that consuming more than 65% of calories from carbohydrates and less than 25% from lipids is associated with a lower Triglyceride-Glucose index. However, be cautious: the quality of these carbohydrates (e.g., whole grains vs. refined sugars) and fats (e.g., unsaturated vs. saturated) was not fully analyzed here, so prioritize nutrient-dense sources.

Adherence to a ketogenic diet for 6-12 months produces transient improvements in weight loss, blood pressure, triglycerides, and HbA1c, but these benefits typically diminish and lose statistical significance after 12 months.

If you start a ketogenic diet, expect to see improvements in weight, blood pressure, and blood sugar within the first year. However, do not expect these benefits to persist indefinitely if you cannot maintain the diet strictly. After 12 months, the weight loss advantage over other diets disappears, and you may regain weight. To mitigate this, consider focusing on plant-based fats and proteins rather than animal-derived ones, as this may improve long-term sustainability and cardiovascular risk profiles.

Slower-digesting protein sources (e.g., casein, whole foods) allow for greater utilization of higher per-meal protein doses (>20g) compared to fast-digesting sources (e.g., whey).

If you are eating a large meal with protein (e.g., 40g+), choose slower-digesting sources like whole foods (eggs, meat) or casein. This slows absorption, reduces oxidation, and may lead to better muscle building than consuming the same amount of fast-digesting whey.

Older adults (approx. 77 years) consume significantly less total daily protein (83.4 g) and distribute it unevenly across meals compared to young adults, failing to meet the per-meal threshold (0.4 g/kg) required to maximally stimulate muscle protein synthesis (MPS).

If you are over 60, simply eating 'enough' protein throughout the day (meeting the 0.8 g/kg guideline) is likely not enough to stop muscle loss. You must concentrate your protein intake into larger doses at each main meal (breakfast, lunch, dinner). Aim for roughly 0.4 grams of protein per kilogram of body weight at each meal. If you struggle to eat large amounts of food, prioritize high-quality protein sources like whey, eggs, or lean meats, or consider protein supplements to hit this per-meal target without feeling overly full.