Browse the evidence

Poultry meat provides high-quality protein with low collagen content, making it highly digestible and suitable for specific life stages requiring increased protein intake, such as pregnancy, growth, and old age.

If you are pregnant, elderly, or recovering from illness, prioritize poultry for its high-quality, easily digestible protein. It helps meet increased nutritional demands without the digestive burden of higher-collagen meats or the lower bioavailability of plant proteins.

Consuming the Recommended Dietary Allowance (RDA) of 0.8 g protein/kg/day for 14 weeks leads to a significant loss of mid-thigh skeletal muscle area in older adults (aged 55-77), indicating the RDA is inadequate for maintaining muscle mass in this population.

If you are over 55, the standard government recommendation of 0.8 grams of protein per kilogram of body weight is likely not enough to keep your leg muscles from shrinking. To maintain muscle mass, you should aim for a higher protein intake, potentially around 1.0 to 1.2 g/kg/day, while ensuring you eat enough total calories to maintain your weight.

In humans, protein intake is a stronger determinant of serum IGF-1 levels than total calorie intake; reducing protein intake lowers IGF-1 even during calorie restriction.

If you are interested in lowering IGF-1 (potentially for cancer risk reduction or longevity), reducing your protein intake is more effective than just cutting calories. Try reducing protein to around 0.8-1.0 g/kg of body weight, ensuring you still get adequate calories and nutrients.

Marine microalgae are superior sources of long-chain omega-3 fatty acids (EPA and DHA) compared to freshwater species, which predominantly contain alpha-linolenic acid (ALA).

If you need EPA and DHA from algae, choose marine-derived sources (e.g., Phaeodactylum, Nannochloropsis). Freshwater algae (e.g., Chlorella, Arthrospira) are rich in protein but primarily contain ALA, not the direct EPA/DHA found in marine strains.

Saturated fat intake should be limited to less than 7% of total energy intake to reduce the risk of type 2 diabetes.

Limit your saturated fat intake to less than 7% of your daily calories. This means choosing lean meats, low-fat dairy, and using plant-based oils (like olive or canola oil) instead of butter or lard. This specific limit is recommended to help prevent type 2 diabetes, alongside maintaining a healthy weight.

High intake of non-starch polysaccharides (dietary fiber) is associated with a decreased risk of type 2 diabetes.

Increase your intake of non-starch polysaccharides (fiber) by eating more whole grains, vegetables, and legumes. This is likely to help reduce your risk of type 2 diabetes. Focus on cereal fiber, which has shown strong protective associations in large studies.

Higher intake of total protein is associated with a lower risk of all-cause mortality, with a dose-response relationship indicating that an additional 3% of energy from plant protein per day is associated with a 5% lower risk of death from all causes.

To support longevity, aim for a higher total protein intake, prioritizing plant sources. Specifically, increasing your plant protein intake by just 3% of your daily energy (e.g., adding a serving of beans, lentils, or nuts) is associated with a 5% reduction in your risk of death from all causes. This applies to generally healthy adults, not those with pre-existing kidney disease.

Providing dietary advice to healthy adults significantly improves cardiovascular risk factors, specifically reducing systolic blood pressure by 2.10 mmHg, diastolic blood pressure by 1.63 mmHg, and total/LDL cholesterol by 0.13 mmol/l, while increasing fruit/vegetable intake and fiber consumption.

Consult a health professional for personalized dietary advice. Focus on practical changes like increasing fruit and vegetable servings and reducing sodium intake. These modest shifts can lead to measurable improvements in blood pressure and cholesterol levels over time, even without weight loss.

Increasing daily protein intake to 1.0–1.2 g/kg body weight (and up to 1.5 g/kg for illness) and distributing it across 25–30 g per meals is superior to current RDAs (0.8 g/kg) for preserving muscle mass and strength in adults over 40.

To maintain muscle as you age, aim for 1.0–1.2 grams of protein per kilogram of body weight daily. Spread this out by eating 25–30 grams of high-quality protein at each of your 2–3 main meals. This strategy is more effective for preserving muscle than simply eating the recommended minimum amount.

Adherence to a Mediterranean-style diet is associated with lower cardiovascular risk profiles compared to Westernized diets, with women showing higher adherence than men.

Focus on specific components: daily non-refined cereals, vegetables, fruits, olive oil, and moderate fish/poultry. Limit red meat and sweets. Women in this study showed better adherence, but overall, many adults are shifting toward Westernized, less healthy patterns.

Consuming fish, especially oily fish, at least twice a week reduces the risk of sudden death and death from coronary artery disease.

Eat at least 8 ounces of oily fish (like salmon or mackerel) twice a week. Prepare it by grilling, baking, or broiling to avoid adding unhealthy fats.

Dietary fat type influences postprandial lipemia, with long-chain n-3 polyunsaturated fatty acids (PUFA) from fish oil significantly reducing postprandial triacylglycerol levels compared to saturated (SFA) or monounsaturated (MUFA) fats, provided sufficient doses (2.7-4 g/d) are consumed.

Not all fats affect your blood fat levels after a meal the same way. Consuming high amounts of long-chain n-3 PUFA (found in fatty fish like salmon) can significantly reduce the spike in triglycerides after eating. To get the benefit, you may need to consume 2.7-4 grams per day, which might require eating fatty fish daily or taking a supplement.

Adherence to Mediterranean (MedDiet) or DASH dietary patterns is associated with a 15–38% reduction in the relative risk of developing GDM.

Adopting a Mediterranean or DASH-style diet before pregnancy can lower your risk of gestational diabetes by 15-38%. Focus on vegetables, fruits, whole grains, legumes, and olive oil, while limiting red meat and processed foods.

Moderate-protein diets (30% energy) combined with carbohydrate restriction (40%) and fat restriction (30%) produce greater fat mass loss, better body composition, and higher long-term adherence compared to conventional high-carbohydrate diets (15% protein, 55% carbohydrates).

To lose fat and keep it off, shift your plate to 30% protein, 40% carbs, and 30% fat. This ratio increases satiety and helps you stick to the diet longer than traditional low-fat, high-carb plans. Ensure you are healthy (no kidney issues) before making this change.

Reducing dietary carbohydrate intake improves the atherogenic dyslipidemia profile (lowering triglycerides and small LDL particles) in individuals with metabolic syndrome or insulin resistance, whereas altering total or saturated fat content has little to no effect on this specific lipid phenotype.

If you have metabolic syndrome, insulin resistance, or high triglycerides, your primary dietary lever is carbohydrate reduction, not fat restriction. Lowering carbs significantly improves your lipid profile by reducing small, dense LDL particles and triglycerides. Changing the amount or type of fat in your diet (saturated vs. unsaturated) has minimal impact on this specific risk profile. Focus on reducing carbohydrates to improve your atherogenic dyslipidemia.

Microalgae species such as Chlorella vulgaris and Arthrospira platensis provide high-quality protein with essential amino acid scores (AAS) equal to or exceeding those of animal-derived proteins, making them viable alternatives for human nutrition.

If you are looking for a high-quality protein source, consider microalgae like Chlorella or Spirulina. They contain all essential amino acids in amounts that meet or exceed the requirements for human health, rivaling the quality of animal proteins. This makes them a sustainable and effective option for meeting your daily protein needs.

A low carbohydrate Mediterranean diet (35% carbs, 45% fat) improves glycemic control (HbA1c) and cardiovascular risk factors (HDL, TG, LDL) more effectively than standard ADA or traditional Mediterranean diets in overweight type 2 diabetic patients.

For overweight type 2 diabetics, switching to a low-carb Mediterranean diet (35% carbs, 45% fat, mostly olive oil/nuts) for a year significantly improves blood sugar control and heart health markers (HDL, Triglycerides) better than standard diabetic diets. Combine this with regular aerobic exercise for best results.

Substituting saturated fatty acids (SFA) with unsaturated fatty acids (MUFA or PUFA) found in nuts lowers blood cholesterol and improves cardiovascular risk profiles.

Replace sources of saturated fat (like fatty meats or butter) with nuts. This substitution lowers LDL cholesterol and improves overall cardiovascular risk. Because nuts are satiating, they help displace less healthy, energy-dense foods, often preventing weight gain despite their high caloric density.

Insufficient consumption of fruit, vegetables, fish, and fiber, combined with high saturated fat intake and prevalent overweight, constitutes a dietary pattern that increases the risk of obesity and chronic diseases.

To lower your risk of obesity and chronic disease, prioritize increasing your intake of fruits, vegetables, fish, and fiber while simultaneously reducing saturated fats. Simply reducing trans fats is not enough if your overall diet remains high in saturated fats and low in essential plant foods.

Ingestion of 9 mg/kg caffeine before prolonged exercise at ~80% VO2max significantly increases time to exhaustion and reduces early-phase muscle glycogenolysis by approximately 55% during the first 15 minutes of exercise.

Take 9 mg of caffeine per kg of body weight about an hour before a long, intense workout (like a long run or bike ride at 80% of your max effort). This dose has been shown to significantly extend how long you can exercise by sparing muscle glycogen in the first 15 minutes, allowing you to cycle longer before exhaustion. Be aware that a small number of people may experience stomach discomfort at this high dose.

Carbohydrate intake should not be restricted below the levels recommended for normal pregnancies (minimum 175g/day), and the focus should be on the type, amount, and distribution of carbohydrates to avoid postprandial hyperglycemia and ketonemia.

Eat at least 175g of carbs daily. Choose high-fiber, low-GI sources like vegetables, legumes, and whole grains. Spread your carbs across 3 meals and 2-3 snacks, and limit breakfast carbs to about 30g to manage morning insulin resistance.

Replacing saturated fats with monounsaturated fats (specifically from virgin olive oil) improves cardiovascular risk profiles by lowering LDL cholesterol and triglycerides while raising HDL cholesterol.

Swap your saturated fats (like butter or fatty meats) with virgin olive oil. This specific swap has been shown to lower bad cholesterol (LDL) by about 7% and improve your overall heart health profile compared to low-fat, high-carb diets.

Consuming 3 servings of dairy foods daily aids in weight control and body fat loss, particularly during caloric restriction.

If you are trying to lose weight, include 3 servings of dairy in your diet. Studies show that high dairy intake during caloric restriction can lead to greater fat loss. You can achieve this through milk, yogurt, or cheese.

Strength athletes require a daily protein intake of 1.4–1.76 g/kg/day to maintain nitrogen balance and optimize whole-body protein synthesis, which is significantly higher than the 0.8–0.89 g/kg/day recommended for sedentary individuals.

If you lift weights regularly, aim for 1.4 to 1.76 grams of protein per kilogram of body weight daily. Eating less than this (e.g., 0.8 g/kg) may cause your body to break down muscle tissue to meet its needs. Eating much more than 1.76 g/kg (e.g., 2.4 g/kg) will not build more muscle; it will simply be burned for energy or excreted, so there is no benefit to going higher.