Browse the evidence

Once-weekly semaglutide 2.4 mg significantly improves control of eating (specifically craving control and craving for savory foods) and sustains these improvements over 104 weeks, facilitating substantial weight loss in adults with overweight or obesity.

If you struggle with food cravings and hunger, especially when trying to lose weight, semaglutide 2.4 mg can help. It improves your ability to control what and how much you eat, particularly cravings for savory foods, and this effect lasts for at least two years. This helps you lose more weight and keep it off compared to lifestyle changes alone.

Semaglutide (GLP-1 receptor agonist) significantly reduces body weight, BMI, and waist circumference in overweight or obese adults, with or without type 2 diabetes, compared to placebo or other glucose-lowering medications.

If you are overweight or obese (BMI ≥24), semaglutide is a highly effective medical intervention for weight loss, working for both diabetic and non-diabetic individuals. It significantly reduces body weight, BMI, and waist circumference compared to placebo. While it can cause gastrointestinal side effects like nausea, serious adverse events are not more common than with a placebo. Be aware that stopping the medication may lead to weight regain, so long-term management and lifestyle changes are crucial.

Semaglutide increases the proportion of patients achieving significant weight loss thresholds (>5%, >10%, >15%, and >20%) compared to control groups.

Semaglutide significantly increases the likelihood of achieving major weight loss milestones (5%, 10%, 15%, 20%) compared to placebo or other treatments.

Cagrilintide-Semaglutide (CagriSema) produces superior weight loss and metabolic improvements compared to monotherapies and placebo in adults with overweight or obesity, with or without type 2 diabetes.

CagriSema is a potent, non-surgical weight loss option that significantly outperforms current GLP-1 monotherapies. It requires weekly (implied) injections and lifestyle changes. Expect transient GI side effects that usually subside. It is suitable for those with BMI ≥30 (or ≥27 with comorbidities), including those with T2D.

Intermittent fasting significantly reduces BMI and improves glucose metabolism (fasting glucose and HOMA-IR) compared to non-fasting controls in adults without diabetes.

If you are an adult without diabetes, trying intermittent fasting (like time-restricted feeding or alternate-day fasting) for at least 4 weeks can help lower your BMI and improve how your body handles blood sugar, even if you don't lose a massive amount of weight. It may be easier to stick to than daily calorie restriction.

Liraglutide 3 mg daily induces significant weight loss in adults with obesity by slowing gastric emptying of solids and increasing satiation, with greater gastric emptying delay correlating with greater weight loss.

Take liraglutide 3 mg daily as prescribed, starting with a lower dose to minimize side effects. Expect some nausea initially, as this often signals the drug is working and may lead to greater weight loss. Combine with dietary counseling for best results. The medication works by slowing digestion and making you feel full sooner, helping you eat less.

High-intensity interval training (HIIT) significantly reduces body weight, total fat mass, and abdominal fat mass in premenopausal women, with cycling being more effective than running.

If you are premenopausal, HIIT (3x/week, ≥8 weeks) is a highly effective strategy for losing fat, especially abdominal fat. Cycling HIIT may be superior to running. If you are postmenopausal, HIIT alone may not significantly reduce weight or abdominal fat due to hormonal changes; you may need longer durations or combined interventions.

Tirzepatide produces the greatest weight loss and superior cardiometabolic improvements (blood pressure, triglycerides, glucose) among FDA/EMA-approved anti-obesity medications.

If you have obesity and comorbidities, Tirzepatide is currently the most effective FDA-approved medication for weight loss and improving metabolic markers like blood pressure and blood sugar. It outperforms Semaglutide in weight reduction magnitude.

Sprint Interval Training (SIT) reduces abdominal visceral fat area (AVFA) to a similar extent as High-Intensity Interval Training (HIIT) despite requiring significantly less total exercise time and training load.

If you are obese and want to reduce dangerous belly fat, Sprint Interval Training (SIT) is a viable option that saves time compared to traditional HIIT. Perform 80 cycles of 6-second all-out sprints with 9 seconds of rest, 3-4 times a week. You do not need to match the total work or time of longer HIIT sessions to see significant visceral fat loss.

Maintaining weight loss after formula diet-induced weight loss requires specific strategies, including continued use of formula products, behavioral support, and gradual food reintroduction, as physiological hunger hormones (ghrelin) increase post-weight loss.

After losing weight with formula meals, your body will naturally try to regain it by increasing hunger hormones. To keep the weight off, you must actively maintain your progress. This means continuing to use some formula products (daily or periodically), engaging in behavioral strategies like self-monitoring, and slowly reintroducing solid foods over 6 weeks rather than rushing back to normal eating.

Tirzepatide significantly reduces body weight, BMI, and waist circumference in overweight or obese adults without diabetes compared to placebo.

If you are overweight or obese and do not have diabetes, tirzepatide is a highly effective prescription medication for significant weight loss. It is taken once a week by injection. While it causes side effects like nausea and vomiting in many people, the weight loss benefits are substantial. You should discuss the risks and benefits with your doctor and start with a low dose to minimize side effects.

Whey protein supplementation combined with resistance training significantly improves body composition (lean mass gain and fat mass loss) and muscular strength specifically in individuals under 40 years of age, but not in older individuals.

If you are under 40, whey protein after resistance training is a proven strategy to build muscle and lose fat. If you are over 40, this specific combination may not yield the same results, and you should consider discussing multi-nutrient options (like vitamin D and leucine-enriched whey) with a professional.

Time-restricted eating (TRE) significantly reduces body weight and fasting insulin levels in overweight and obese women compared to control groups, without negatively affecting fat-free or lean body mass.

If you are overweight or obese, try restricting your eating window to 8-10 hours a day (e.g., 10 AM to 6 PM). This approach has been shown to help women lose weight and improve insulin sensitivity without losing muscle mass, and it is often easier to stick to than strict calorie counting.

Lactobacillus sp. probiotic supplementation significantly reduces body mass index, body weight, waist and hip circumference, and visceral/subcutaneous fat mass in non-comorbid obese individuals compared to placebo.

If you are obese without other major health conditions, adding a Lactobacillus probiotic (doses ranging from 1 million to 50 billion CFU daily) to your routine may help reduce body weight, BMI, and waist circumference. The effect is modest but statistically significant, particularly when taken for at least 12 weeks. It is not a magic bullet but may support other lifestyle changes.

In adults with obesity without diabetes, tirzepatide produces significantly greater weight loss and cardiometabolic improvements than semaglutide over 6 months, even when semaglutide patients receive higher maintenance doses.

If you are choosing between tirzepatide and semaglutide for obesity management without diabetes, tirzepatide offers greater weight loss and better cardiometabolic improvements over 6 months. This advantage holds true even if you are on a higher maintenance dose of semaglutide than the typical tirzepatide dose. Consult your doctor to determine which medication aligns best with your health profile and insurance coverage.

Six months of intermittent fasting (2-3 non-consecutive days of vegetable-only fasting per week) significantly reduces body weight, body fat, and improves lipid profiles (LDL-C, non-HDL-C, triglycerides) in middle-aged adults with overweight, without significantly affecting blood pressure, fasting glucose, or inflammatory markers.

If you are overweight and middle-aged, trying intermittent fasting 2-3 days a week with a vegetable-only diet on those days can significantly improve your weight and cholesterol levels without needing to change your diet on other days. This approach is well-tolerated and offers specific metabolic benefits beyond just eating less.

Flexible time-restricted eating combined with aerobic exercise improves insulin resistance (HOMA-IR) and insulin levels more effectively than either intervention alone.

To improve your insulin sensitivity, combining an 8-hour eating window with regular moderate aerobic exercise is more effective than doing either one alone. This approach helps lower insulin levels and improve insulin resistance markers more significantly than diet or exercise in isolation.

Semaglutide 2.4 mg weekly produces substantial and durable weight loss (10-15%) in adults with overweight or obesity through central appetite suppression, delayed gastric emptying, and improved glucose homeostasis.

If you have obesity, semaglutide 2.4 mg taken once weekly is a highly effective treatment for significant weight loss (10-15%). It works by reducing appetite and slowing digestion. Start with a low dose to minimize stomach upset, which usually improves over time. It is a long-term commitment, not a quick fix.

Letrozole is the first-line pharmacological therapy for infertility in women with PCOS, superior to or preferred over Clomiphene and Metformin.

If you are trying to conceive, Letrozole is the recommended first medication. Clomiphene and Metformin are used if Letrozole is not suitable or effective.

GLP-1 receptor agonists (e.g., Liraglutide, Exenatide) promote weight loss and improve glycemic control by mimicking incretin hormones, delaying gastric emptying, and increasing satiety, making them advantageous for obese T2DM patients.

GLP-1 agonists like Liraglutide are injectable medications that help lower blood sugar and promote weight loss. They work by mimicking a natural hormone that slows digestion and increases fullness. They are particularly useful for obese patients. Hypoglycemia risk is low unless taken with other specific diabetes drugs.

Dietary intake of fermentable fibers and prebiotics boosts the abundance of SCFA-producing bacteria (e.g., Bifidobacteria, Lachnospiraceae), leading to increased production of short-chain fatty acids (SCFAs) which regulate gut homeostasis, immunity, and metabolic health.

To improve your gut health and metabolic markers, focus on eating foods that feed your good bacteria. This means consuming prebiotic fibers found in foods like garlic, onions, bananas, oats, and resistant starches (like cooled potatoes or rice). This fosters bacteria that produce beneficial short-chain fatty acids, which support your gut barrier, immune system, and metabolism. Direct SCFA supplements have shown mixed results in humans, so diet is the primary lever.

High sodium intake increases blood pressure and arterial stiffness through volume expansion, endothelial dysfunction, and sympathetic activation, whereas modest sodium reduction lowers BP and improves vascular health in hypertensive and salt-sensitive individuals.

If you have high blood pressure, reducing your sodium intake is one of the most effective steps you can take to lower it and protect your heart. However, if you have normal blood pressure, you don't need to obsessively restrict salt to near-zero levels, as extremely low intake may carry its own risks. Focus on reducing excess intake rather than eliminating it entirely.

Dietary fiber modulates gut microbiota composition and function, leading to the production of short-chain fatty acids (SCFAs) which improve glucose and lipid metabolism in individuals with metabolic diseases.

Increase your intake of diverse dietary fibers, particularly soluble and fermentable types like beta-glucan, inulin, and resistant starch. These fibers feed beneficial gut bacteria that produce short-chain fatty acids (SCFAs), which help regulate blood sugar and fat metabolism. Focus on whole plant foods rather than isolated supplements for best results, and introduce fiber gradually to minimize digestive discomfort.

Adhering to a low-fat vegan diet significantly reduces dietary acid load (measured by PRAL and NEAP), which is independently associated with greater reductions in body weight, fat mass, and visceral fat compared to a control diet, even after adjusting for energy intake.

To lose fat and improve metabolic health, focus on a whole-food, plant-based diet that is low in fat. This approach naturally lowers your dietary acid load, which the study links to better insulin sensitivity and greater fat loss than just counting calories. You don't need to count calories strictly, but you should avoid animal products and added oils, and ensure you take a B12 supplement.