Browse the evidence

Biathletes should consume 6–12 g/kg/day of carbohydrates, adjusted by training intensity, to maintain high carbohydrate availability and support glycogen resynthesis between sessions.

Aim for 6 to 12 grams of carbohydrates per kilogram of body weight every day. Adjust this amount up on heavy training days and down on rest days. Prioritize carbohydrate-rich foods at every meal and use high-carb snacks between sessions to keep your energy stores full.

Biathletes should consume a recovery meal containing approximately 0.3 g/kg of protein and 1.2 g/kg of carbohydrates immediately after key training sessions or races to optimize glycogen resynthesis and muscle repair.

Within 30 minutes of finishing a hard session or race, eat a meal with 0.3 grams of protein and 1.2 grams of carbohydrates per kilogram of body weight. A recovery shake is a convenient option if you can't eat a full meal immediately.

A well-planned vegetarian diet supports muscle hypertrophy and strength gains comparable to omnivorous diets when protein intake (1.6-2.2 g/kg/day) and energy balance are adequately managed.

To build muscle on a vegetarian diet, prioritize getting 1.6 to 2.2 grams of protein per kilogram of body weight daily. Ensure you are eating enough total calories to support your training. Focus on variety—combining legumes, grains, nuts, and seeds—to ensure you get enough leucine and other essential amino acids. This approach supports muscle growth just as effectively as an omnivorous diet.

Low-carbohydrate diets (LCD) produce greater weight loss and fat mass reduction compared to low-fat diets (LFD) in obese individuals, although both interventions significantly reduce total body mass and BMI.

If you are obese and want to lose weight, a low-carbohydrate diet (limiting carbs to <45% or <40g/day) is likely to yield faster and greater fat loss than a low-fat diet. Focus on reducing high-carb foods while ensuring adequate protein and healthy fats. Be aware of potential side effects like fatigue or constipation initially, and consult a doctor if you have kidney issues.

Adjuvant GLP-1 RA therapy combined with high-protein intake (≥1.2 g/kg/day) and resistance training is necessary to counteract metabolic adaptation and preserve lean body mass after bariatric surgery.

After bariatric surgery, your body fights back against weight loss by slowing your metabolism. If you experience weight regain, adding a GLP-1 medication can help. Crucially, to prevent losing muscle along with fat, you must eat at least 1.2 grams of protein per kilogram of body weight daily and engage in supervised resistance training. This combination helps maintain your metabolic health and muscle mass.

Supplementing resistance training with defatted peanut protein (35g protein/day) significantly increases vastus lateralis muscle thickness and knee flexion torque in older, untrained adults compared to resistance training alone.

If you are over 50 and new to resistance training, adding 35 grams of defatted peanut protein daily to your routine can help you build more muscle in your thighs and increase your knee flexion strength compared to training alone. Stick to a twice-weekly full-body resistance training program focusing on progressive overload.

When protein intake is matched for quantity and leucine content, plant-based protein supplements produce equivalent gains in muscle mass and strength compared to animal-based protein supplements during resistance training.

If you are training to build muscle, you do not need to buy expensive animal protein powders. You can use plant-based proteins (like soy, pea, or rice) and get the same results, provided you consume enough total protein and ensure the supplement provides a similar amount of leucine as animal sources. Match the dose (e.g., ~25g protein) and train consistently.

Post-exercise ingestion of 1.2 g/kg/hour of carbohydrates for 6 hours, combined with 0.2-0.4 g/kg/hour of protein, optimizes glycogen restoration and muscle recovery in athletes, mitigating the risk of Overtraining Syndrome.

After intense training, prioritize eating carbohydrates immediately. Aim for 1.2 grams of carbs per kilogram of body weight each hour for the next 6 hours. Include 10-20 grams of high-quality protein in the first hour. Also, drink enough fluids to replace 150% of the weight you lost during exercise over those 6 hours.

A high-protein diet (1.4-2g/kg body weight) supports muscle repair, lean body mass gains, and strength improvements in resistance-trained individuals, with animal proteins potentially offering superior lean mass benefits compared to plant proteins.

If you lift weights, aim for 1.4 to 2 grams of protein per kilogram of body weight daily. This supports muscle repair and strength gains. While animal proteins may offer a slight edge in lean mass for younger adults, plant proteins are also effective, especially if your baseline intake was previously low.

Balanced macronutrient intake (1.6-2.2g protein/kg, 4-6g carbs/kg) results in significantly greater strength gains (12.5%) and faster recovery (24 hours) compared to protein or carbohydrate deficits.

Eat a balanced diet with 1.6-2.2g of protein per kg of body weight and 4-6g of carbohydrates per kg. This supports maximum strength gains and faster recovery (24 hours) compared to restricting either nutrient.

Whey protein is the only protein source shown to have statistically significant effects on both endurance performance and muscle strength in this meta-analysis.

If you use protein supplements for performance, whey protein is the only source with demonstrated significant benefits for both endurance and strength in this analysis. Other sources (soy, casein, etc.) did not show significant effects.

Higher protein intake is significantly associated with greater hand muscle strength in adolescent karate athletes, whereas energy, fat, and carbohydrate intake are not.

For adolescent karate athletes, ensuring adequate protein intake is more critical for hand strength than simply eating enough total calories or focusing on carbs/fat. While knowing nutrition is good, it doesn't replace the need for specific nutrient intake and training. Focus on distributing protein intake throughout the day to support muscle protein synthesis alongside training.

High protein intake combined with physical rehabilitation improves muscle mass retention and functional recovery in patients undergoing ACL reconstruction.

If you are recovering from ACL surgery, ensure your diet includes adequate protein alongside your physical therapy. This combination is associated with better muscle retention and functional recovery, though more high-quality research is needed to define exact dosages.

Carbohydrate intake of 3–12 g/kg/day, adjusted for exercise duration and intensity, is recommended for athletes with diabetes to optimize glycogen storage and performance.

As a diabetic athlete, you need carbohydrates to perform. Aim for 3 to 12 grams of carbohydrates per kilogram of your body weight each day. If you train for a long time or at high intensity, aim for the higher end of this range. This helps store glycogen in your muscles and liver, which is your main energy source during exercise. Monitor your blood sugar to see how your body responds to different amounts.

Adherence to low-calorie, low-carbohydrate, low-fat, or low-sodium diets is significantly associated with improved anthropometric indicators (BMI, waist circumference, waist-to-hip ratio, body fat/muscle composition) in Moroccan adults.

If you have high blood pressure, diabetes, or high cholesterol, adopting a diet that restricts calories, carbohydrates, fat, or sodium (as defined by your doctor) is associated with better body composition and lower cardiovascular risk. Focus on the specific restriction relevant to your condition (e.g., low sodium for hypertension).

Adherence to a ketogenic diet (KD) for 1.5–3 months in overweight/obese women leads to statistically significant reductions in BMI categories (overweight/obesity) and body weight, with 75% of users reporting successful weight loss goals.

If you are overweight and considering a ketogenic diet, expect significant weight loss and BMI reduction within 1.5 to 3 months. Most users succeed, but be prepared for potential side effects like fatigue or 'keto flu' during the first few weeks. Supplementing with electrolytes (sodium, potassium, magnesium) is common and may help. Since most users do this without medical advice, consider consulting a professional to check for contraindications.

Randomized clinical trials demonstrate that dietary interventions (specifically low-carbohydrate or high-fiber diets) and physical activity significantly improve insulin sensitivity in obese individuals.

To improve insulin sensitivity, prioritize limiting carbohydrate intake and increasing dietary fiber through whole grains, vegetables, and legumes. Combine this with regular physical activity, as these are the most prominent intervention strategies found in recent clinical trials for obesity and insulin resistance.

Adherence to a very low-carbohydrate diet (VLCD) of approximately 36g carbohydrates per day in individuals with Type 1 Diabetes Mellitus (T1DM) results in exceptional glycemic control (mean HbA1c 5.67%) with low rates of adverse events, including hypoglycemia and diabetic ketoacidosis (DKA).

If you have Type 1 Diabetes, adopting a very low-carbohydrate diet (around 30-40g carbs daily from fibrous vegetables and nuts) can significantly improve your average blood sugar (HbA1c) to near-normal levels. This approach requires careful insulin adjustment, particularly reducing total daily insulin doses, but may result in fewer severe hypoglycemic events and hospitalizations compared to standard high-carbohydrate diets. Consult your healthcare provider to adjust your insulin regimen safely.

Consuming 4-5 protein boluses per day, with one near training and one before sleep, optimizes muscle protein synthesis without requiring precise peri-workout carbohydrate timing.

Eat 4-5 meals with protein throughout the day. Make sure one of these meals is within 1-2 hours of your workout and another is within 1-2 hours before you go to sleep. You do not need to rush to consume carbohydrates immediately after training; total daily protein and overall meal distribution are more important.

Low-carbohydrate diets (5-25% energy from carbs) improve cardiometabolic markers (weight, waist circumference, HDL, triglycerides) in healthy adults, with greater carbohydrate restriction yielding larger improvements in lipid profiles despite similar weight loss.

Adopting a low-carbohydrate diet (15-25% of calories from carbs) for 12 weeks can significantly improve your metabolic health markers, including weight, waist size, and blood lipids (specifically raising good HDL cholesterol and lowering triglycerides). You do not need to go to extreme ketosis (5% carbs) to see benefits; moderate restriction is easier to maintain and still yields superior lipid improvements compared to higher carb intakes, all while eating enough calories to maintain your usual energy levels.

Ingesting 30g of protein from whole food sources (e.g., beef, eggs, milk) post-exercise effectively stimulates muscle protein synthesis rates, providing a viable alternative to isolated protein supplements.

Eat 30g of protein from whole foods (like 4.5oz of chicken/beef, 3 cups of milk, or 5 eggs) after your workout. You don't need a shake; whole foods work just as well for building muscle and give you extra vitamins and fullness.

Concentrated Whey Protein (WPC) with 51-80% protein content is specifically effective for fat mass loss, whereas Hydrolyzed (WPH) and Isolated (WPI) forms did not show statistically significant fat loss effects in subgroup analyses.

If you are using whey for fat loss, Concentrated Whey (WPC) with 51-80% protein content appears to be the most effective form. Isolated or Hydrolyzed whey did not show significant fat loss benefits in this specific subgroup analysis.

A well-designed vegan diet is compatible with peak athletic performance, including aerobic capacity, anaerobic performance, and muscle strength, when properly supplemented.

If you are an athlete, a well-designed vegan diet can support peak performance. Ensure you supplement with Vitamin B12, Vitamin D, EPA/DHA, creatine, and vegan protein. This combination, along with resistance training, can preserve and increase muscle mass.

Ensuring adequate protein intake at every eating occasion is essential to prevent loss of lean body mass and malnutrition during rapid weight loss induced by GLP-1 RAs.

Because GLP-1 medications suppress appetite, you may struggle to eat enough. Prioritize protein at every meal to protect your muscles. If you can only eat small amounts, choose high-protein foods. Consider liquid protein sources if solid food is unappealing.