Browse the evidence

Providing personalized biofeedback on resting energy expenditure (REE) and respiratory quotient (RQ) via portable indirect calorimetry significantly enhances weight loss outcomes compared to standard care alone in individuals with obesity.

If you have obesity, asking for a metabolic test (indirect calorimetry) during your weight loss program can help you lose more weight than standard advice alone. This test measures how you burn fat vs. carbs and your resting energy needs. Share these results with your dietitian so they can tailor your calorie and exercise goals to your specific biology, rather than using generic formulas. This personalized approach led to significantly greater weight loss and waist circumference reduction in this study.

A 12-month 4:3 intermittent fasting protocol significantly reduces binge eating and uncontrolled eating behaviors compared to daily caloric restriction, and these behavioral improvements are associated with greater weight loss.

If you struggle with binge eating or losing control over food intake, try a 4:3 intermittent fasting schedule (fasting for 3 non-consecutive days a week with significant calorie restriction, and eating normally for the other 4 days) combined with behavioral support. This approach may help reduce binge eating tendencies more effectively than strict daily calorie counting, potentially leading to better long-term weight loss.

A modest reduced-calorie diet (75% of energy requirements) for two months significantly improves lipid profiles, blood pressure, and specific inflammatory markers (ICAM-1, MCP-1) in overweight/obese adults with cardiovascular risk factors.

If you are overweight or obese and have high blood pressure, cholesterol, or blood sugar, cutting your daily calories to 75% of what your body normally burns (a 25% reduction) for two months can significantly lower your bad cholesterol, triglycerides, and blood pressure. It also reduces specific markers of blood vessel inflammation. You do not need to change your exercise routine, but you should avoid omega-3 supplements during this period. Focus on filling your reduced calories with vegetables, fruits, and lean proteins to stay full.

A daily caloric deficit of 500-1,000 kcal (low-calorie diet) produces a weight loss of 0.5-1.0 kg per week and up to 10% body weight over 6 months.

To lose weight steadily, reduce your daily calorie intake by 500 to 1,000 calories compared to what you normally eat. This moderate deficit typically results in losing 0.5 to 1.0 kg per week. Over six months, this approach can help you lose about 10% of your body weight. Focus on sustainable habits rather than extreme restriction.

Very Low-Calorie Ketogenic Diet (VLCKD) produces superior weight loss compared to low-carbohydrate diets and is recommended for severe obesity and specific metabolic conditions.

VLCKD is a very strict, low-calorie (<800 kcal) ketogenic diet that produces superior weight loss compared to standard low-carb diets. It is recommended for severe obesity and specific metabolic conditions under medical supervision. It is not suitable for everyone and has strict contraindications.

In well-trained males, full-body resistance training routines produce significantly greater fat mass loss than split-body routines when weekly training volume is matched.

If you are an experienced male lifter trying to lose fat, switch to a full-body routine (training all major muscle groups 5 days a week) instead of splitting body parts across the week. Keep your total weekly sets the same (around 75 sets). This approach will likely help you lose more fat because you will feel less sore and move more during the rest of your day, burning more calories overall.

Progressive weight loss exceeding 30% induces 100% remission of hyperinsulinemia (HI) and insulin resistance (IR) in individuals with overweight or obesity, whereas lower weight loss thresholds yield partial or no remission.

If you have high insulin or insulin resistance, losing a small amount of weight (5-10%) will help your health, but it likely won't cure the metabolic issue. To fully reverse hyperinsulinemia and insulin resistance, you generally need to lose more than 30% of your body weight through a sustained, intensive lifestyle and medical program over a year.

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.

The superiority of low-carbohydrate diets for weight loss and body fat percentage reduction is most pronounced in subgroups with longer follow-up (≥6 months), younger age (<60 years), and very low carbohydrate intake (<10% carbs).

To maximize weight loss benefits from a low-carb diet, aim for very low carbohydrate intake (<10% of calories) and maintain the diet for at least 6 months. This approach is particularly effective for individuals under 60 years of age.

Lifestyle modifications (diet and physical activity) produce 5-10% weight loss and improve metabolic health, serving as the recommended first-line therapy for obesity.

Adopt a sustainable diet that creates a caloric deficit and engage in regular physical activity, including both aerobic exercise and strength training. This approach reliably yields 5-10% body weight loss and improves metabolic health markers like blood pressure and HbA1c. Consistency and realistic goal-setting are key to long-term success.

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.

Resistance training combined with high protein intake (1.6-2.0 g/kg/day) preserves or increases muscle mass during caloric restriction, whereas high protein intake alone is insufficient without resistance training.

To lose fat without losing muscle, you must lift weights (at least 10 sets per muscle group per week) and eat 1.6-2.0 grams of protein per kilogram of body weight daily. Do not rely on protein shakes or dieting alone.

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.

Adding high-volume exercise (six sessions/week) to a caloric deficit completely preserves fat-free mass while maximizing fat loss in individuals with newly diagnosed type 2 diabetes, whereas lower exercise volumes fail to prevent fat-free mass loss.

If you have type 2 diabetes and are losing weight through diet, you must add exercise to protect your muscle. Aim for 6 days of exercise per week, combining cardio and resistance training, to maximize fat loss and keep your muscle mass. If 6 days is too much, 3 days still helps lose fat, but you might lose some muscle.

Higher adherence to the VLCKD program, measured by number of medical visits and total doses consumed, is positively associated with greater success in weight loss, BMI reduction, and fat mass loss.

Attend all scheduled medical and nutritional visits. The study shows that higher adherence, measured by attending visits and consuming the prescribed doses, is significantly associated with better weight loss and fat loss outcomes.

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.

Time-restricted eating (TRE) significantly reduces body weight, fat mass, BMI, and waist circumference in adults, but does not significantly reduce fat mass percentage.

If you are an adult looking to lose weight and body fat, restricting your daily eating window to 12-20 hours (fasting for 4-12 hours) is an effective strategy. You can expect significant reductions in body weight, waist circumference, and fat mass. However, be aware that this method also leads to a loss of fat-free mass (muscle) and does not significantly change your body fat percentage. It is not necessarily superior to standard calorie restriction for weight loss, but may be easier to adhere to for some people.

Reducing total caloric intake by 500-1,000 kcal daily (Low-Calorie Diet) is a safe, practical, and effective primary strategy for obesity management, yielding 0.5-1.0 kg weight loss per week.

To lose weight safely, reduce your daily calories by 500 to 1,000 compared to what you normally eat. This simple deficit typically results in losing 0.5 to 1.0 kg per week and is considered safe for most people without strict medical supervision.

Combining flexible time-restricted eating (8-hour window) with aerobic exercise yields significantly greater fat mass reduction than either intervention alone in middle-aged women with overweight/obesity.

If you are a middle-aged woman with overweight or obesity, combining an 8-hour eating window with regular moderate aerobic exercise (like brisk walking or jogging) will result in significantly more fat loss than doing either one alone. You do not need to count calories or stick to fixed meal times; simply choose an 8-hour window each day that fits your schedule and stay active.

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.

A plant-based caloric restriction diet (PB-CRD) using a '5+2' structured meal plan is non-inferior to conventional calorie-restricted diets (CRD) for weight loss in obese adults, while providing superior reductions in total body fat percentage and improvements in metabolic markers including insulin sensitivity, uric acid, and liver enzymes.

To lose weight and improve metabolic health, you can follow a structured plant-based diet that restricts calories to 1,300-1,600 kcal/day. You do not need to be vegan 7 days a week; eating standardized plant-based meals for 5 days and allowing flexible, calorie-controlled meals for 2 days is effective. This approach matches the weight loss of traditional calorie restriction but offers better improvements in body fat percentage, insulin sensitivity, and liver health.

Intermittent fasting (16:8 time-restricted eating) produces significantly greater weight loss and improvements in fasting glucose and triglycerides compared to standard calorie restriction in obese adults over an 8-week period.

If you are obese and struggling with weight loss, try a 16:8 intermittent fasting schedule (eat within an 8-hour window, fast for 16) for at least 8 weeks. This approach may yield better weight loss and metabolic improvements than simply counting calories, and it is generally well-tolerated.

Daily consumption of 100 mg Kaempferia parviflora extract (SIRTMAX®) for 12 weeks significantly reduces body fat mass and visceral fat area in overweight adults compared to placebo.

Take 100 mg of Kaempferia parviflora extract (SIRTMAX®) once daily before breakfast for 12 weeks. This specific extract has been shown in a clinical trial to significantly reduce body fat mass and visceral fat in overweight adults, even without changing diet or exercise habits. It is not a magic bullet, but it provides a measurable advantage over placebo.

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.