Browse the evidence

Regular physical activity, including both aerobic and resistance training, improves metabolic and reproductive features in PCOS independent of significant weight loss.

Aim for 150 minutes of moderate activity (like brisk walking) or 75 minutes of vigorous activity per week, plus two days of muscle-strengthening exercises. You don't need to lose weight to see metabolic benefits from exercise. Start with 10-minute bouts and gradually increase duration by 5% each week.

High-dose mazdutide (9-10 mg once-weekly) produces robust, statistically significant body weight loss (approx. 10-12%) in Chinese adults with overweight or obesity, with a favorable safety profile despite transient gastrointestinal side effects.

If you are an adult with overweight or obesity, once-weekly injections of mazdutide (9-10 mg) can lead to significant weight loss (around 10%) over 3-4 months. While you may experience temporary stomach issues like nausea or diarrhea, these usually improve over time. This treatment is most effective when combined with maintaining your current diet and exercise habits.

Older ICU patients (>60 years) require higher protein intakes (approaching 2.0–2.5 g/kg/day) to achieve positive nitrogen balance and stimulate muscle protein synthesis, due to age-related anabolic resistance.

If you are over 60 and in the ICU, your body needs significantly more protein than the standard recommendation to stop muscle loss. Aim for 2.0 to 2.5 grams of protein per kilogram of your usual body weight daily, prioritizing high-quality proteins rich in leucine. This is safe unless you have severe kidney failure. Combine this nutrition with early physical therapy or movement to maximize muscle retention.

Adjunct treatment with once-weekly semaglutide (up to 1.0 mg) produces sustained, clinically significant weight loss (mean 14.7% total weight loss) in post-bariatric patients with weight regain or insufficient weight loss over 12 months, regardless of sex or initial surgery type.

If you have regained weight or lost insufficient weight after bariatric surgery, semaglutide (a GLP-1 medication) can help you lose more weight, even if you don't have diabetes. In this study, patients lost an average of 14.7% of their body weight over a year using a dose lower than the maximum approved for obesity. This offers a medical option when lifestyle changes alone are not enough, potentially avoiding the need for revision surgery.

In patients with Class 3 obesity and Type 2 Diabetes, switching to weight-neutral or weight-losing diabetes medications (SGLT-2 inhibitors, GLP-1 agonists, DPP-4 inhibitors) during a multidisciplinary weight management program results in significantly greater weight loss compared to switching to weight-gaining medications (sulphonylureas, insulin).

If you have severe obesity (BMI 40+) and Type 2 Diabetes, ask your doctor about switching your diabetes medications to 'weight-neutral' or 'weight-losing' types (like SGLT-2 inhibitors or GLP-1 agonists) instead of older 'weight-gaining' ones (like insulin or sulphonylureas). In this program, patients who made this switch lost nearly 8% of their body weight in 6 months, compared to only 2.4% for those who switched to weight-gaining drugs. This change also helped reduce their overall diabetes medication load and improved blood sugar control.

Combining GLP-1 receptor agonists (specifically liraglutide) with bariatric surgery (BS) or endoscopic bariatric therapy (EBT) significantly enhances weight loss and metabolic improvements compared to BS or EBT alone, particularly in patients experiencing weight regain or insufficient loss.

If you have had bariatric surgery or an endoscopic procedure but are regaining weight or hitting a plateau, adding a GLP-1 receptor agonist like liraglutide (titrated to 3mg daily) can significantly boost weight loss and metabolic health compared to the procedure alone. This is particularly effective for those who have regained weight after surgery. Expect potential gastrointestinal side effects like nausea, which often subside with dose titration. This approach is not a replacement for lifestyle changes but a powerful adjunct to them.

Higher dietary protein intake (25-30% of daily kcal) improves cardiometabolic health markers, including insulin sensitivity and blood pressure, particularly when combined with energy restriction or specific protein sources like milk protein isolate.

If you are insulin resistant or overweight, increasing protein to 25-30% of your calories (especially from sources like milk protein or lean meats) alongside a calorie deficit can significantly improve your blood sugar control and insulin sensitivity. Focus on the quality of the protein source and the overall food matrix.

Ingesting a substantial mixed meal immediately after resistance exercise suppresses muscle protein breakdown (MPB) more effectively than consuming the same meal before exercise or exercising in a fasted state.

If you resistance train in the morning, prioritize eating a substantial meal containing protein and carbohydrates immediately after your workout. This timing is more effective at stopping muscle breakdown than eating the same meal before you train or skipping the meal entirely. Ensure your post-workout meal is nutrient-dense (e.g., whole foods) to maximize the insulin response that suppresses breakdown.

Combining dulaglutide (1.5 mg weekly) with a low-energy diet (825 kcal/day) significantly improves weight loss and glycaemic control in individuals with type 2 diabetes and obesity compared to baseline, while maintaining high adherence and tolerability.

If you have type 2 diabetes and obesity, combining a once-weekly GLP-1 medication (dulaglutide) with a strict low-calorie diet (around 825 calories/day) can lead to significant weight loss (approx. 9.5 kg) and better blood sugar control. This approach helps manage hunger, making it easier to stick to the diet. Always consult your doctor before stopping current diabetes or blood pressure medications.

Intentional weight loss of 5-15% body weight in overweight/obese hypertensive patients leads to significant reductions in systolic/diastolic blood pressure and facilitates dose reductions or discontinuations of antihypertensive medications.

If you have high blood pressure and are overweight, losing 5-15% of your body weight through a calorie-restricted diet and exercise can significantly lower your blood pressure. This improvement often allows your doctor to safely reduce or stop your blood pressure medications. Work with your doctor to monitor your progress and adjust medications as needed.

Anti-obesity medications (AOMs), particularly semaglutide, produce statistically significant weight reduction in older adults (≥65 years), with the strongest evidence supporting their use in those with established cardiovascular disease.

If you are 65 or older and have obesity, anti-obesity medications like semaglutide can help you lose weight, especially if you have heart disease. The weight loss is significant (around 7-8% in major trials), but you may experience more side effects like nausea or dizziness. Work with your doctor to start slowly and monitor your health.

A 12-week low-carbohydrate, high-fat (LCHF) diet improves metabolic health outcomes (specifically triglycerides, HDL cholesterol, and glucose) and yields greater weight loss compared to a conventional high-carbohydrate, low-fat diet in overweight military personnel.

Adopt a low-carbohydrate, high-fat diet for 12 weeks, focusing on whole foods like non-starchy vegetables, meat, and healthy fats, while limiting processed foods, grains, and sugars. Monitor your adherence and expect improvements in metabolic markers like triglycerides and HDL, along with weight loss, even if LDL cholesterol increases slightly.

Supplementing with 20g/day of medium-chain triglycerides (MCTs) starting 5 days before a very low-calorie ketogenic diet (VLCKD) significantly enhances weight loss, fat mass reduction, and BMI class improvement compared to VLCKD alone.

If you are starting a strict ketogenic diet, consider taking 20g of MCT oil daily starting 5 days before you begin the diet. This may help you enter ketosis faster and lose more weight and fat than starting the diet without it. Ensure you are following a very low-calorie plan.

Combining 16:8 TRE with exercise significantly reduces triglycerides and LDL cholesterol compared to exercise alone, with greater LDL-C reductions observed in men.

If you exercise regularly, adding a 16:8 time-restricted eating schedule may lead to small but significant improvements in triglycerides and LDL cholesterol (bad cholesterol) compared to exercising without dietary timing restrictions. Men may see greater improvements in LDL-C. These benefits are modest and should be viewed as part of a broader cardiometabolic risk-reduction plan.

High-intensity aerobic interval training (AIT) is superior to continuous moderate exercise (CME) for reversing metabolic syndrome risk factors, including improving aerobic capacity, endothelial function, and insulin sensitivity, when training volumes are equated.

If you have metabolic syndrome, high-intensity interval training (AIT) is more effective than moderate continuous exercise for reversing risk factors like high blood pressure and insulin resistance, provided you do the same amount of total work. AIT involves short bursts at 90% of your max heart rate. While it feels harder, it yields better metabolic improvements than steady-state moderate exercise.

Low-intensity walk training (approx. 20% VO2max) combined with restricted venous blood flow (Kaatsu) induces significant muscle hypertrophy and strength gains in young men, whereas identical walking without blood flow restriction produces no changes.

If you cannot perform heavy resistance training, combining walking with blood flow restriction (using specialized cuffs) may stimulate muscle growth. This protocol involves walking at a slow pace (50 m/min) for short bouts (2 minutes) with rest periods, while wearing occlusion cuffs on the legs. This was shown to increase muscle size and strength in young men over 3 weeks, likely due to metabolic stress rather than mechanical load.

A structured, multi-modal weight loss program combining dietary advice, exercise, and behavioral support significantly improves ovulation and spontaneous pregnancy rates in anovulatory obese women compared to no intervention.

For obese women struggling with infertility, a structured 6-month program focusing on gradual weight loss through diet, exercise, and behavioral support can restore ovulation and enable spontaneous pregnancy. This approach is cost-effective and avoids the risks of multiple pregnancies associated with fertility drugs. It is recommended as a first-line step before pursuing invasive medical treatments like IVF.

Moderate weight loss (>5% body weight) via long-term calorie restriction (1000 kcal/day) improves endocrine and ovarian function in obese women with PCOS, evidenced by increased SHBG, decreased free testosterone, and restored menstrual regularity.

For obese women with PCOS, achieving a modest weight loss of just over 5% through a sustained, moderate calorie-restricted diet (around 1000 kcal/day) can significantly improve hormonal balance (increasing SHBG, lowering free testosterone) and restore regular menstrual cycles and fertility, without needing to reach an 'ideal' BMI.

A strict low-carbohydrate diet improves glycemic control and insulin sensitivity in obese patients with type 2 diabetes within two weeks.

For type 2 diabetics, cutting carbs to ~20g/day for two weeks can significantly improve how your body handles insulin and lowers blood sugar. This improvement happens quickly, often allowing for reduced medication doses under medical supervision. This suggests that managing carb intake is a powerful tool for controlling diabetes, potentially more so than just weight loss alone.

Adherence to a Mediterranean diet increases the probability of remission from metabolic syndrome by 49% compared to control diets.

If you have metabolic syndrome, following a Mediterranean diet significantly increases your chances of reversing the condition compared to standard dietary advice.

Regular moderate-intensity physical activity (≥30 min, ≥5 times/week) improves insulin sensitivity and glycemic control in adults with type 2 diabetes, potentially reducing medication needs.

Aim for 30 minutes of moderate activity, like brisk walking, at least five days a week. If you have physical limitations, consult a healthcare provider to create an individualized plan that fits your abilities. This helps manage blood sugar and may reduce the need for medication.

Consuming at least two portions of oil-rich fish per week (providing ~0.45g long-chain n-3 PUFAs daily) is recommended to protect against fatal heart disease.

Aim to eat two portions of fish weekly, ensuring one is an oil-rich variety like salmon, mackerel, or sardines (fresh, canned, or frozen) to get protective long-chain n-3 fatty acids.

Low-volume constant-load high-intensity interval training (HIT) significantly improves insulin sensitivity and increases skeletal muscle oxidative capacity (mitochondrial content and GLUT4) in previously sedentary middle-aged adults.

If you are sedentary and middle-aged, you can significantly improve your metabolic health without spending hours at the gym. Perform 6 sessions of cycling over 2 weeks. Each session involves 10 minutes of total work (10 intervals of 1 minute each, with 1 minute rest). Cycle at a resistance that feels hard (about 80-95% of your max heart rate) but is not all-out. This short commitment yields similar metabolic benefits to long endurance workouts.

A 1200 kcal/day diet combined with aerobic exercise induces weight loss in overweight PCOS patients, which significantly reduces ovarian volume and microfollicle count, restores ovulatory cycles, and increases spontaneous pregnancy rates.

For overweight women with PCOS struggling with infertility, a strict 1200 kcal/day diet is the first-line treatment. You do not need a specific gym routine; just incorporate moderate aerobic activity like swimming or aerobics 1-2 times a week. Losing just 5% of your body weight can significantly shrink ovarian volume, restore regular ovulation, and increase your chances of spontaneous pregnancy.