Browse the evidence

Higher habitual dairy intake causally decreases LDL and Total Cholesterol (TC) levels in adults.

To support cardiovascular health, include dairy in your diet. The study suggests a causal link between higher dairy intake and lower LDL and Total Cholesterol. This benefit may be particularly relevant for adults over 50.

Skeletal Muscle Mass (SMM) and Appendicular Lean Soft Tissue (ALST) are critical protective factors against frailty, diabetes, and mortality, and their loss (sarcopenia) is an independent risk factor for adverse health outcomes.

Prioritize resistance training to build and maintain muscle mass, especially as you age. Muscle is not just for aesthetics; it is your primary organ for glucose disposal and metabolic health. If you are losing weight, ensure you are doing resistance training and consuming adequate protein to prevent muscle loss, which can lead to frailty and weight regain.

Long-term use of GLP-1 receptor agonists (semaglutide 2.4mg or tirzepatide 15mg) produces significant weight loss (4-21%) and improved cardiometabolic markers, but discontinuation leads to rapid weight regain and increased cardiac risk.

GLP-1 agonists like Wegovy and Mounjaro are highly effective for significant weight loss (up to 20%) when taken long-term. However, they are not a 'cure'; stopping the medication typically results in weight regain and increased heart disease risk. If you use these, view them as a long-term tool alongside lifestyle changes, not a quick fix.

Combining GLP-1 agonist therapy with exercise and diet reduces abdominal fat and metabolic syndrome severity more effectively than medication alone, without increasing hypoglycemia risk.

Taking GLP-1 medications works best when paired with exercise and healthy eating. This combination specifically targets abdominal fat and improves heart health markers without raising blood sugar risks. Do not skip lifestyle changes just because you are on medication.

Structured behavioral lifestyle interventions (BLIs) with frequent feedback and support produce clinically meaningful weight loss (≥5%) in overweight or obese patients with type 2 diabetes, regardless of specific diet or exercise components.

For T2DM patients, the specific diet or exercise type matters less than the structure of the support. Choose a program that offers frequent feedback, regular monitoring, and social support. Consistency in attending sessions and receiving feedback is more critical than the specific 'brand' of diet or exercise.

Time-restricted eating (TRE) with a 9-hour eating window (1000–1900 h) is non-inferior to standard individualized dietetic guidance for improving HbA1c and glycemic control in adults with type 2 diabetes over a 6-month period.

If you have type 2 diabetes, try limiting your daily eating to a 9-hour window, specifically between 10:00 AM and 7:00 PM. You do not need to restrict calories explicitly, but you will likely eat less spontaneously. This approach is just as effective as standard dietitian advice for lowering HbA1c and may be easier to stick with because it is simpler. Ensure you are not on medications that require strict meal timing (like insulin or sulphonylureas) without medical supervision.

Cardiac rehabilitation programs that include structured exercise training significantly improve cardiorespiratory fitness (peak VO2) in patients with type 2 diabetes, thereby reducing cardiovascular risk factors.

If you have Type 2 Diabetes and heart disease, supervised exercise is one of the most effective ways to improve your heart health and longevity. Start with a cardiac rehabilitation program to ensure safety and maximize benefits.

Extreme weight-loss diets (low-carb, low-fat, or VLCD) are not sustainable long-term and lead to rapid weight regain, whereas balanced, calorie-restricted diets combined with physical activity and counseling are superior for sustained weight management.

Avoid crash diets that restrict entire food groups or severely limit calories. Instead, adopt a balanced diet with a moderate calorie deficit (500-1000 kcal/day), incorporate regular exercise, and consider counseling to help you stick with it long-term.

Regular physical exercise and optimized nutrition can mitigate age-related declines in muscle mass, metabolic rate, and glucose homeostasis in older adults, with masters athletes demonstrating significantly better preservation of lean mass and insulin sensitivity compared to sedentary peers.

To maintain muscle and metabolic health as you age, consistent physical activity and adequate protein intake are critical. Masters athletes demonstrate that these factors can significantly offset age-related declines in muscle mass and insulin sensitivity, suggesting that these changes are not purely inevitable but are largely driven by lifestyle factors.

Animal protein improves muscle mass compared to non-soy plant proteins (rice, chia, oat, potato) and plant-based diets, while soy protein is equivalent to milk protein for muscle mass.

If you are using plant protein, soy is just as good as animal protein for building muscle. Other plant proteins (rice, pea, oat, potato) may be less effective, so consider combining them or supplementing with soy or animal protein if muscle mass is a priority.

Multimodal interventions combining structured resistance and endurance exercise with adequate protein and caloric intake are effective for preventing and treating frailty in community-dwelling older adults.

For older adults with frailty, engage in a supervised, multimodal exercise program at least 2-3 times per week for 12 weeks or more. Combine resistance training (using weights or bodyweight, progressing to 20-85% of your one-rep max) with endurance activities (120-300 minutes of light-to-moderate activity weekly). Ensure your diet provides adequate calories and protein to support muscle repair. Consult a healthcare provider for a comprehensive assessment before starting.

Reducing ultra-processed food intake after a colorectal cancer diagnosis is associated with lower cardiovascular disease mortality compared to maintaining or increasing UPF intake.

If you have had colorectal cancer, cutting back on ultra-processed foods after your diagnosis can significantly lower your risk of dying from heart disease. Even a moderate reduction (e.g., 2-3 servings per day less than before) is associated with better outcomes.

Combining incretin-based obesity medications (semaglutide/tirzepatide) with moderate lifestyle modification (150 min/week aerobic + 2 days resistance) yields sustainable weight loss and health benefits, making intensive behavioral therapy and strict caloric restriction redundant.

If you are prescribed semaglutide or tirzepatide, you do not need to follow a strict diet or exercise for hours every day. Aim for 150 minutes of moderate walking per week and two days of strength training. This moderate approach is sufficient to maintain weight loss and health benefits alongside your medication, whereas intensive protocols are likely unnecessary and harder to sustain.

Flaxseed oil (ALA) is an inefficient source of EPA and DHA due to low conversion rates, making direct supplementation with long-chain omega-3s (fish oil) necessary for most people.

If you want the benefits of EPA and DHA (brain, heart, inflammation), flaxseed oil is not enough because your body barely converts it. Eat fatty fish regularly or take a fish oil/algae oil supplement directly.

Losing obesity (achieving non-obesity status) after having been obese in young adulthood normalizes the risk of MASLD, at-risk MASH, and increased liver stiffness to levels comparable to those who were never obese.

If you were obese in your young adulthood but have since lost the weight to a non-obese range, your risk for serious liver conditions (like MASH and fibrosis) is likely the same as someone who was never obese. You do not need to worry about 'permanent' liver damage from your past obesity if you have achieved and maintained a healthy weight.

Semaglutide (GLP-1 receptor agonist) produces significant weight loss (15.5% in adolescents, 12.5% in adults) and cardiovascular benefits, making it a prioritized treatment for those with metabolic risk factors.

Semaglutide is a highly effective weekly injection that can lead to significant weight loss (12-15%) and cardiovascular benefits. It is particularly recommended for those with metabolic risks or low satiety.

A greater reduction in intrahepatic fat content (IFC) following a 6-month lifestyle intervention (Mediterranean diet and physical activity) is associated with improved oxidative stress and inflammatory status, specifically through increased catalase activity and reduced irisin and cytokeratin-18 levels, alongside better cardiorespiratory fitness.

For NAFLD patients, achieving a significant reduction in liver fat through a 6-month lifestyle program involving a calorie-restricted Mediterranean diet and regular physical activity (either high steps or interval training) leads to better oxidative stress and inflammatory profiles. Focus on adherence to the diet and increasing activity levels to maximize liver fat loss.

A low-carbohydrate, ketogenic diet (<20 g carbohydrate/day) produces significantly greater weight loss and improves lipid profiles (lower triglycerides, higher HDL) compared to a low-fat, reduced-calorie diet over 24 weeks in overweight, hyperlipidemic adults.

If you are overweight and have high cholesterol, switching to a very low-carb diet (under 20g carbs/day) for 6 months will likely result in nearly double the weight loss compared to a standard low-fat diet, while significantly improving your triglyceride and HDL levels. You do not need to count calories strictly, but you must avoid grains, sugars, and most fruits initially. Expect some initial side effects like fatigue or constipation, which can be managed with water, salt, and supplements. Monitor your LDL cholesterol, as a minority of people may see it rise.

Vegetarian and vegan diets provide sufficient protein and amino acids for adults when they include a variety of plant-based protein sources such as legumes, nuts, and seeds.

If you are eating a vegetarian or vegan diet, ensure you include protein-rich plant foods like legumes, nuts, and seeds in your daily meals. You do not need to obsess over combining specific proteins at every single meal; simply eating a variety of these foods throughout the day is sufficient to meet your protein and amino acid needs.

Adherence to the Mediterranean Diet (MedDiet) significantly reduces the risk of developing Metabolic Syndrome (MetS) and improves individual MetS criteria such as blood pressure and waist circumference.

Adopt a Mediterranean-style eating pattern as your primary dietary strategy for Metabolic Syndrome. Prioritize extra virgin olive oil, nuts, vegetables, fruits, and whole grains. Aim for 35-45% of calories from fat (mostly unsaturated), 35-45% from carbs, and 15-18% from protein. This pattern has been shown to reduce MetS risk by nearly 20% and improve blood pressure and waist circumference.

The DASH diet is the most effective dietary pattern for lowering blood pressure compared to other diets including low-fat, Nordic, and Paleolithic diets, and it significantly reduces the risk of developing Metabolic Syndrome.

Follow the DASH diet to manage blood pressure and reduce Metabolic Syndrome risk. Eat plenty of vegetables, fruits, whole grains, and low-fat dairy. Limit saturated fats to 6% of calories and sodium to under 2300 mg/day. This approach is more effective for blood pressure than low-fat diets.

Plant-based diets (vegetarian/vegan) reduce blood pressure and body weight, and lower the risk of Metabolic Syndrome, primarily through high fiber, antioxidant intake, and reduced consumption of red/processed meats.

Adopt a plant-based diet rich in whole grains, vegetables, legumes, nuts, and fruits. This reduces blood pressure, body weight, and Metabolic Syndrome risk. Avoid refined carbs, sugary drinks, and processed snacks to ensure the diet is truly healthy.

Moderate and sustained weight loss through combined diet, exercise, and lifestyle modifications improves blood glucose levels, insulin action, and reduces the need for diabetic medications in individuals with obesity and type 2 diabetes.

If you have obesity and Type 2 Diabetes, losing weight is the most critical step you can take to improve your health. You don't need a specific pill or extreme diet; focus on a sustainable combination of eating less, moving more, and changing daily habits. This approach directly improves how your body handles sugar and insulin, potentially reducing your need for medication.

Caffeine supplementation (typically 3-6 mg/kg) improves exercise performance across aerobic endurance, muscle strength, muscle endurance, power, jumping, and speed.

Take 3-6 mg of caffeine per kg of body weight before exercise. It works for almost all types of exercise, from running to lifting weights. Most studies used 6 mg/kg, but individual responses vary, so you might need to experiment.