Browse the evidence

Plant-based, high-fiber diets promote the growth of beneficial bacteria (e.g., Prevotella, Faecalibacterium prausnitzii) that produce short-chain fatty acids (SCFAs) like butyrate, which reduces inflammation and protects against age-related diseases.

Eat more plants, especially high-fiber ones like vegetables, fruits, legumes, and whole grains. This feeds good gut bacteria that produce anti-inflammatory compounds (SCFAs) to protect your gut and overall health as you age.

Supplementation with prebiotics (e.g., inulin, FOS) and probiotics (e.g., Bifidobacteria) can increase the abundance of beneficial bacteria, reduce inflammation markers, and improve stool frequency in the elderly.

Consider taking prebiotics (like inulin or FOS) and probiotics (like Bifidobacteria) to support your gut health, especially if you are elderly. However, these work best when combined with a diet rich in fiber.

Ingesting 5 mg/kg of caffeine one hour before submaximal cycling (70% VO2 max) significantly reduces muscle glycogen utilization by 42% and increases muscle triglyceride utilization by 150% compared to a placebo.

Take 5 mg of caffeine per kg of body weight one hour before your workout. For a 70 kg person, this is 350 mg. This dose has been shown to significantly spare muscle glycogen and increase fat usage during moderate-intensity cycling, potentially extending endurance.

Replacing saturated fats with high intakes of omega-6 polyunsaturated fatty acids (PUFAs) fails to prevent cardiovascular disease and may increase cancer risk, whereas a diet low in both saturated and omega-6 fats with moderate omega-3 intake reduces risk.

Stop focusing solely on swapping butter for vegetable oil. Instead, aim for a Mediterranean-style diet: minimize saturated fats and limit omega-6 rich oils (like corn, soybean, sunflower). Prioritize moderate intake of omega-3s from plants (flax, walnuts) and marine sources, and consume plenty of polyphenol-rich foods like olive oil and red wine (in moderation) to support heart and cancer defense.

Incorporating edible mushrooms into muscle foods (meat/fish) reduces sodium, saturated fat, and cholesterol content while increasing dietary fiber, protein, and bioactive compounds, thereby improving the nutritional profile and health benefits of the final product.

To make your favorite meat dishes healthier, replace a portion of the meat (e.g., 20-50%) with chopped edible mushrooms like Shiitake or Oyster. This lowers the sodium and saturated fat while adding fiber and umami flavor, making the dish more nutritious without sacrificing taste.

Daily consumption of peanuts significantly reduces the risk of heart disease, comparable to other nuts, due to their content of monounsaturated and polyunsaturated fatty acids.

Include peanuts in your daily diet to support heart health. They are rich in healthy fats that lower heart disease risk. Be aware of allergies, but for most people, daily consumption is beneficial.

Peanuts provide a complete protein profile containing all essential amino acids, making them a viable plant-based protein source for preventing malnutrition.

Use peanuts as a source of complete protein. They contain all the essential amino acids your body needs for growth and metabolism, making them a good alternative to animal proteins.

Dietary methionine restriction (MR) significantly increases fat oxidation and reduces intrahepatic lipid content in obese adults with metabolic syndrome, independent of weight loss.

If you have metabolic syndrome, restricting methionine (found in meat, dairy, and grains) to very low levels (approx 2mg/kg body weight) for 16 weeks can help your body burn more fat and reduce liver fat, even if you lose the same amount of weight as someone eating a normal restricted diet. However, achieving this requires a highly restrictive diet that eliminates many common foods, which may be difficult to sustain long-term.

High-protein diets significantly increase HDL cholesterol compared to low-protein diets, but only when studies involving Type 2 Diabetics are excluded.

If you do not have Type 2 Diabetes, a high-protein diet might slightly improve your HDL cholesterol, but this may be due to the specific fat composition of the diet rather than the protein itself.

In patients with NAFLD, the presence of metabolic syndrome is associated with higher histologic severity (steatosis, NASH activity, global score) and a dietary pattern characterized by higher carbohydrate and lower fat intake compared to those without metabolic syndrome.

If you have NAFLD and metabolic syndrome, your liver disease severity is linked to your specific diet composition, not just total calories. Specifically, higher carbohydrate and lower fat intake is associated with worse liver inflammation and fat accumulation. While this study doesn't prescribe a specific diet, it suggests that focusing on reducing carbohydrate intake relative to fat, alongside managing metabolic health, may be a relevant strategy to discuss with your healthcare provider.

Increased dietary fat intake (specifically >20% of energy) combined with reduced physical activity leads to obesity because humans lack short-term regulatory mechanisms to compensate for high-fat energy density.

Limit dietary fat to around 20% of total energy intake, especially if you have a sedentary job. High-fat foods are less satiating per calorie, making it easy to overconsume energy.

Replacing 50% of meat and dairy consumption with fruits, vegetables, and cereals significantly reduces annual cardiovascular and cancer mortality in the UK population.

To maximize your long-term health and reduce your environmental footprint, aim to cut your meat and dairy intake by half. Replace those calories with more fruits, vegetables, and whole grains. This shift is the single most effective dietary change for preventing heart disease and cancer deaths, far outweighing the benefits of just swapping red meat for chicken. While you should monitor Vitamin B12 levels, this change does not inherently compromise other key nutrients if you eat a varied plant-based diet.

Increasing fruit and vegetable consumption is the primary driver of reduced mortality when meat and dairy are reduced, outweighing the benefits of reduced saturated fat or salt intake.

When you cut back on meat and dairy, make sure you fill that space with plenty of fruits and vegetables. This addition is what actually drives the major health benefits, such as reduced heart disease and cancer risk, far more than just cutting down on fat or salt alone.

Dietary substitution of saturated fatty acids (SFA) with oleic acid (a monounsaturated fatty acid) reverses SFA-induced metabolic dysfunction, including insulin resistance and inflammation, by enhancing mitochondrial oxidation and reducing pro-inflammatory lipid intermediates like ceramides and diacylglycerols.

If your diet is high in saturated fats (like red meat or processed foods), try replacing some of those fats with oleic acid-rich sources, such as extra-virgin olive oil. This substitution helps lower inflammation and improves insulin sensitivity by changing how your cells process energy, specifically by reducing harmful lipid byproducts like ceramides.

Saturated fatty acids adversely affect vascular function, while polyunsaturated fatty acids (specifically linoleic acid, EPA, and DHA) are beneficial for blood pressure and arterial compliance.

Prioritize unsaturated fats, especially omega-3s (EPA and DHA from fish), to support blood pressure and arterial health. Limit saturated fats, as they are associated with adverse vascular effects. This distinction is more important than the total amount of fat consumed.

Long-term adherence to low-carbohydrate-high-protein (LCHP) diets, particularly those high in animal protein and fat, is associated with an increased risk of all-cause and cardiovascular mortality, whereas vegetable-based LCHP diets are associated with lower mortality.

If you follow a low-carb, high-protein diet, prioritize plant-based proteins and fats. Animal-based high-protein, low-carb diets may be associated with higher mortality risks in the long term.

Vegetable protein intake is inversely associated with cardiovascular mortality and blood pressure, while total protein intake per se has an inconclusive relationship with all-cause mortality.

Include more vegetable proteins in your diet to potentially support cardiovascular health and lower blood pressure.

Consuming tree nuts (median 56 g/d) as part of an isocaloric diet significantly improves glycemic control (lowering HbA1c and fasting glucose) in individuals with type 2 diabetes.

If you have type 2 diabetes, adding about 56 grams (roughly a small handful) of tree nuts daily to your diet can help lower your blood sugar levels. To avoid weight gain, replace other foods in your meal with the nuts rather than eating them in addition to your usual diet. This strategy has been shown to significantly improve HbA1c and fasting glucose in clinical trials.

Distinguishing between unique fixed point and invariant manifold body composition models requires perturbations that directly alter body composition (e.g., resistance exercise, growth hormone) rather than just energy balance.

To truly understand how your body partitions weight loss, you need to look at how it responds to changes in muscle mass or hormonal status, not just calorie deficits. Standard diets won't tell you if your body has a rigid composition set point or flexible states.

Older adults disproportionately consume lower-quality plant-based proteins at lunch compared to younger and middle-aged adults, who primarily consume animal-based proteins at the same meal.

At lunch, older adults tend to eat lower-quality plant proteins (like bread) compared to younger people who eat meat or fish. Since animal proteins are more effective at building muscle, try to swap some of your lunch carbohydrates for a high-quality protein source like eggs, yogurt, or lean meat to better support your muscles.

Sarcopenic obesity (high BMI with low lean body mass) is associated with increased risk of dose-limiting chemotherapy toxicity and adverse survival outcomes in esophageal cancer patients.

For esophageal cancer patients, body composition (lean muscle mass) is as important as BMI. Doctors should consider lean body mass-based dosing for chemotherapy to reduce toxicity, especially in patients with sarcopenic obesity.

Flavonoids inhibit glucose transporters (GLUT2, GLUT5, GLUT7), thereby reducing intestinal glucose and fructose absorption.

Eating flavonoid-rich foods might slightly slow down sugar absorption by affecting transporters in the gut. This is a subtle effect and should not replace a balanced diet, but it may offer some metabolic benefit.

Vegetarian diets do not significantly reduce the risk of gestational diabetes or hypertension in pregnant women compared to omnivorous diets.

If you are pregnant, switching to a vegetarian diet may not specifically reduce your risk of gestational diabetes or high blood pressure compared to a standard diet. Consult your doctor for personalized advice.

GLP-1RA users tend to overconsume saturated fat and total fat percentages, potentially exacerbating gastrointestinal side effects like nausea and constipation.

You are likely eating too much saturated fat, which can worsen nausea and constipation common with GLP-1RA. Try to shift some calories from fats to fiber-rich carbohydrates and protein to improve GI comfort and nutrient density.