Browse the evidence

GLP-1 receptor agonists (Liraglutide, Semaglutide) and other weight loss medications produce significant mean weight loss compared to placebo.

If lifestyle changes are insufficient, discuss GLP-1 agonists like Semaglutide or Liraglutide with your doctor. These medications can produce significant weight loss (up to 15% with Semaglutide) by reducing appetite and slowing digestion.

Replacing saturated fat with unsaturated fats (PUFA/MUFA) significantly reduces cardiovascular disease risk and all-cause mortality, whereas replacing saturated fat with refined carbohydrates does not improve overall cardiovascular risk.

To lower your heart disease risk, swap high-saturated-fat foods (like fatty meats and full-fat dairy) for unsaturated fats found in plant oils (olive, canola), nuts, and seeds. Do not replace these fats with refined carbohydrates like white bread or sugar, as that fails to improve cardiovascular risk.

Medical Nutrition Therapy (MNT) provided by Registered Dietitian Nutritionists (RDNs) significantly improves cardiometabolic risk factors (LDL-C, TG, BMI, BP, HbA1c) and reduces medication costs in patients with dyslipidemia and cardiometabolic risk.

If you have high cholesterol, high blood pressure, or obesity, ask your doctor for a referral to a Registered Dietitian Nutritionist (RDN). Multiple visits with an RDN are proven to improve your numbers and may reduce your need for medications.

Anti-obesity medications (AOMs) are effective adjuncts for weight reduction and treating adiposopathy, but their efficacy is contingent upon adherence and individual metabolic response, with weight regain occurring if treatment is discontinued.

Use FDA-approved anti-obesity medications as a long-term tool to manage obesity, not just for short-term weight loss. They work best when combined with nutrition and exercise. Do not stop the medication just because you hit a target weight; stopping often leads to regain. Discuss specific drugs (like Semaglutide or Phentermine) with your doctor based on your health profile.

External provision of all food significantly improves adherence to both ketogenic and Mediterranean diets compared to self-provided food, although adherence drops for both when participants must source and prepare their own meals.

If you are trying to follow a specific diet like Keto or Mediterranean, your environment matters more than you think. The study shows that providing all meals for the first month significantly boosts adherence for both diets. When you switch to buying and cooking your own food, adherence drops for everyone, regardless of the diet type. To succeed, consider using meal delivery services or heavy pre-preparation for the first few weeks to build the habit and knowledge, rather than relying on willpower alone to source specific foods from scratch.

Sustained weight loss of at least 15% significantly improves glycemic control, reduces cardiometabolic risk, and can induce remission of Type 2 Diabetes (T2DM).

To potentially reverse Type 2 Diabetes, aim for a sustained loss of 15% or more of your body weight. This threshold is linked to significant improvements in blood sugar control and reduced heart disease risk. Be aware that maintaining this loss is biologically challenging due to appetite changes, so long-term strategies (like medication or surgery) may be necessary to support this goal.

Excessive sets per workout negatively interact with muscle mass gain, meaning that performing too many sets per session can reduce the overall hypertrophy outcome.

While resistance training builds muscle, doing too many sets in a single workout may reduce your overall muscle gain. Focus on quality and moderate volume rather than maximizing the number of sets per session.

Low muscle glycogen availability prior to soccer match-play causes early fatigue, characterized by reduced high-intensity sprinting and increased low-intensity walking, whereas maintaining normal glycogen stores preserves high-intensity performance.

Ensure you have high muscle glycogen stores before kickoff. If you start with low glycogen, you will likely slow down, walk more, and sprint less effectively. Prioritize carbohydrate intake in the days leading up to the match to maintain 'normal' glycogen levels and preserve high-intensity performance.

High protein diets increase satiety and preserve fat-free mass during weight loss through increased anorexigenic hormones (GLP-1, PYY, CCK), decreased orexigenic hormones (ghrelin), and higher diet-induced thermogenesis, though long-term satiety benefits may diminish due to adaptation.

Prioritize protein intake (approx. 27-35% of calories) to help manage hunger and preserve muscle mass. This works by boosting satiety hormones and increasing the energy cost of digestion, though be aware that your body may adapt to this over very long periods.

Among patients receiving intensive lifestyle intervention, achieving ≥10% weight loss in the first year is associated with a significant reduction in all-cause mortality compared to the control group.

If you are doing an intensive lifestyle program for type 2 diabetes, aim for 10% weight loss in the first year, as this specific threshold is associated with lower mortality risk. However, even if you don't reach 10%, the health benefits for blood pressure, fitness, and quality of life are still valuable.

Adhering to healthy dietary patterns, including calorie restriction, intermittent fasting, Mediterranean, and plant-based diets, significantly reduces the risk of cardiometabolic disease (CMD) and all-cause mortality.

Focus on your overall eating pattern rather than isolating single nutrients. Adopt established healthy patterns like the Mediterranean diet, plant-based diets, or structured calorie restriction. These approaches are proven to lower CMD risk and extend lifespan more effectively than restrictive single-nutrient diets.

Calorie restriction (CR) of 25-30% without malnutrition improves cardiometabolic risk factors (body composition, lipids, glucose, inflammation) and may extend healthy lifespan.

Reduce your daily calorie intake by 25-30% while ensuring you still get all essential nutrients. This can be done continuously or via intermittent fasting patterns. Combining this with exercise yields the best cardiovascular outcomes.

A high-protein vegan diet rich in mycoprotein supports daily myofibrillar protein synthesis rates and skeletal muscle hypertrophy comparable to an isonitrogenous omnivorous diet during progressive resistance training in young adults.

If you are vegan and want to build muscle, ensure you are eating approximately 2 grams of protein per kilogram of body weight daily. Focus on high-quality plant sources like mycoprotein (found in products like Quorn), soy, or pulses. Combine this with a consistent resistance training program (at least 3-4 times per week). You do not need animal products to achieve muscle growth or strength gains comparable to omnivores, provided you meet your protein targets.

Soy protein supplementation supports muscle growth and strength development comparably to whey protein when both are matched for leucine content during resistance training.

If you are using soy protein to build muscle, ensure your supplement provides about 2-3 grams of leucine per serving (which may require slightly more total soy powder than whey). When matched for this key amino acid, soy supports muscle growth and strength gains just as effectively as whey during resistance training.

Adherence to a traditional Mediterranean dietary pattern (rich in vegetables, fruits, nuts, legumes, unrefined cereals, moderate fish/shellfish, and fermented dairy) is associated with reduced all-cause and cardiovascular mortality in primary and secondary prevention of cardiovascular disease.

Adopt a dietary pattern centered on vegetables, fruits, nuts, legumes, and unrefined cereals. Use olive oil as your primary fat source. Include moderate amounts of fish, shellfish, and fermented dairy. Limit red and processed meats. This approach is more effective for long-term cardiovascular health than focusing solely on reducing saturated fat.

Replacing saturated fats with unsaturated fats (particularly polyunsaturated and monounsaturated fats) provides the greatest cardiovascular benefit, whereas replacing saturated fat with refined carbohydrates does not.

Reduce intake of saturated fats (found in butter, fatty meats, full-fat dairy) and replace them with unsaturated fats (found in olive oil, nuts, seeds, fatty fish). Do not replace them with refined carbohydrates like white bread or sugar, as this does not improve cardiovascular outcomes.

A pragmatic 15-week intensive lifestyle modification program involving meal replacements and counseling produces clinically relevant weight loss (mean 6.7%) and significant improvements in exercise capacity and quality of life in patients with obesity and heart failure with preserved ejection fraction (HFpEF).

If you have heart failure with preserved ejection fraction and obesity, a structured 15-week program using meal replacements for two meals a day, combined with weekly counseling, can help you lose about 7% of your body weight. This weight loss significantly improves your ability to walk and your overall quality of life, even without supervised exercise. The program is designed to be safe and scalable, using existing healthcare resources.

Combining protein supplementation (3-40g/day of amino acids/protein) with exercise training significantly increases muscle mass, muscle strength, and functional mobility while reducing pain in older adults with lower-extremity osteoarthritis, particularly those who have undergone total joint replacement.

If you are an older adult with knee or hip osteoarthritis, especially after joint replacement surgery, combining resistance or multicomponent exercise with protein supplementation (3-40g/day of amino acids or protein) is highly effective. This combination significantly increases muscle mass, improves strength, enhances mobility (walking, stair climbing), and reduces pain more than exercise alone. Aim for 2-7 weeks of consistent training with daily protein support to see these benefits.

Current U.S. Recommended Dietary Allowance (RDA) for protein (0.8 g/kg/day) is likely insufficient for older adults, athletes, and pregnant/lactating women, as newer methodologies (IAAO) and functional outcome studies suggest higher intakes (1.2–2.6 g/kg/day) are required for optimal health and physical function.

If you are over 65, an athlete, or pregnant, aim for more protein than the standard 0.8g/kg. Target 1.2-1.6g/kg for older adults to protect muscle, and up to 1.6-2.0g/kg for athletes. Distribute this protein evenly across meals to maximize muscle synthesis.

High-quality carbohydrates, defined by high dietary fiber and low added sugar content (e.g., whole grains, pulses, fruit), are associated with lower risks of cardiovascular disease, type 2 diabetes, and all-cause mortality, whereas refined carbohydrates and added sugars are linked to adverse cardiometabolic outcomes.

Prioritize carbohydrate sources that are high in fiber and low in added sugars. Choose whole grains, pulses, and fresh fruit over refined grains and sugary beverages. Use the 10:1 carbohydrate-to-fiber ratio as a practical guide: aim for products where there is at least 1 gram of fiber for every 10 grams of total carbohydrate. This approach naturally limits added sugars and improves overall diet quality, supporting better blood sugar control and cardiovascular health.

Higher overall diet quality, specifically defined by adherence to Swedish nutrition recommendations for saturated fat, polyunsaturated fat, fish, fiber, fruit/vegetables, and sucrose, is associated with a statistically significant reduction in the risk of incident atherosclerotic cardiovascular disease (ACVD).

Adopt a diet that prioritizes fish (at least 300g/week), high fiber (≥2.4g/MJ), and plenty of fruits and vegetables (≥400g/day), while limiting saturated fats to ≤14% of energy, polyunsaturated fats to 5-10%, and sucrose to ≤10%. This pattern, when maintained long-term, significantly lowers your risk of heart disease and stroke, independent of your blood pressure or cholesterol levels.

High leisure-time physical activity is associated with a reduced risk of incident atherosclerotic cardiovascular disease (ACVD), independent of other lifestyle factors.

Aim for high leisure-time physical activity, defined as >50 MET-hours per week. This can be achieved through various activities of different intensities. This level of activity significantly reduces your risk of heart disease and stroke, even when accounting for your diet and other risk factors.

Whey protein supplementation significantly increases appendicular skeletal muscle mass index and gait speed in older adults with sarcopenia compared to placebo or routine consultation.

If you are an older adult diagnosed with sarcopenia, adding whey protein supplements to your diet can help increase your muscle mass and improve your walking speed. You do not necessarily need to combine this with resistance training to see benefits in muscle mass and gait speed, though training may offer additional strength benefits. Aim for 9.6 to 40 grams of whey protein per serving, taken 1-3 times daily, over a period of at least 8 weeks.

Combining whey protein supplementation with resistance training significantly increases handgrip strength in older adults with sarcopenia compared to placebo or routine consultation.

For older adults with sarcopenia, combining whey protein supplements with resistance training is an effective strategy to improve handgrip strength. While resistance training alone is beneficial, adding whey protein ensures adequate protein intake to support muscle repair and growth. Aim for 9.6-40g of whey protein per serving, taken 1-3 times daily, alongside 2-5 sessions of resistance training per week for at least 8 weeks.