Browse the evidence

Intermittent fasting (5:2 diet) produces significantly greater weight loss and improvements in insulin resistance compared to continuous calorie restriction in overweight women over 12 weeks.

If you are overweight and non-diabetic, try a 5:2 intermittent fasting schedule for 12 weeks. On two non-consecutive days, eat only 20-25% of your daily energy needs. On the other five days, eat normally. This approach may lead to greater weight loss and better insulin sensitivity than simply cutting calories every day.

A structured 12-week calorie-restricted dietary intervention starting with a 6-week Very Low-Calorie Diet (VLCD) phase (800-1200 kcal/day) followed by a 6-week maintenance phase significantly reduces body weight and improves postprandial glycemic response in Korean adults with early type 2 diabetes and obesity.

For Korean adults with early type 2 diabetes and obesity, a structured 12-week program starting with a 6-week very low-calorie diet (800-1200 kcal/day, with meals provided) followed by a 6-week self-managed maintenance phase can lead to significant weight loss (approx. 7-8%) and improved blood sugar control. The key is the structured, phased approach and meal provision to ensure adherence.

Short-term provision of Healthy Ketogenic Diet Ready-To-Eat (HKD-RTE) meals enhances initial weight loss and adherence compared to HKD counseling alone, leading to sustained greater weight reduction at 6 months despite the RTE intervention ending after one month.

If you struggle with the time and effort of preparing a ketogenic diet, try using ready-to-eat meals that fit your macros for the first month. This study suggests that this short-term convenience can help you establish better habits and lose more weight in the long run (6 months) compared to just getting advice. Focus on getting the first month right with convenient, pre-made meals to build momentum.

Adherence to Healthy Ketogenic Diet Ready-To-Eat (HKD-RTE) meals is positively associated with greater weight loss, with each 1% increase in compliance linked to additional weight loss over 3 months.

Your weight loss is directly tied to how consistently you follow the meal plan. Even small improvements in your compliance (like eating your pre-made meals more often) can lead to extra weight loss. Don't aim for perfection; aim for consistency, as every bit of compliance counts.

Nutritional guidance that dynamically adjusts energy intake based on regular measurements of Resting Energy Expenditure (REE) and physical activity effectively reduces body weight in patients with obesity without triggering metabolic adaptation (REE reduction) or increasing hunger.

To lose weight without triggering your body's survival mechanisms (slowed metabolism and intense hunger), you must tailor your calorie intake to your specific energy burn. This involves measuring your Resting Energy Expenditure (REE) and tracking physical activity, then adjusting your daily calorie target regularly (e.g., weekly) as your body changes. Use technology like meal-tracking apps to ensure you are hitting these dynamic targets. This personalized approach allows for significant weight loss (approx. 5% in 24 weeks) while keeping your metabolism and hunger levels stable.

Combining High-Intensity Interval Training (HIIT) with Resistance Training (RT) increases lean muscle mass and reduces visceral fat more effectively than Moderate-Intensity Continuous Training (MICT) alone in postmenopausal women.

If you are a postmenopausal woman looking to lose visceral fat and build muscle, combine short, intense cardio intervals with resistance training 3 times a week instead of just doing steady-state cardio.

Both 5:2 and 16:8 intermittent fasting protocols produce statistically significant weight loss in overweight and obese individuals over a 6-week period, with no statistically significant difference in efficacy between the two methods.

If you are overweight or obese, you can choose either the 5:2 method (eating very little on 2 days a week) or the 16:8 method (eating within an 8-hour window daily) to lose weight. Both work significantly over 6 weeks, and neither is proven to be better than the other. Pick the one you can stick with consistently.

Structured calorie-restricted diets (800-1,800 kcal) can induce diabetes remission in obese Korean adults with early-onset Type 2 Diabetes, with remission rates up to 75%.

If you have recently been diagnosed with Type 2 Diabetes and are obese, a structured diet starting at 800 calories and moving to 1,200-1,800 calories can potentially put your diabetes into remission, especially if you stop other medications under doctor supervision.

A 12-month digital weight management program integrating tirzepatide with behavioral coaching achieves clinically meaningful weight loss (mean 22.7%) and significant improvements in binge eating and depressive symptoms.

If you have obesity and are considering medication, a structured program that combines tirzepatide with digital coaching and support can lead to significant weight loss (over 22% on average) and improvements in mental health and binge eating. Expect some initial side effects like nausea, but these often subside, and clinical support is available to help you manage them.

A 12-week high-protein intermittent-fasting low-calorie (HP-IF-LC) diet significantly improves body composition, lipid profiles, and arterial function in obese adults compared to baseline.

If you are obese, a 12-week program combining high protein intake, intermittent fasting, and a calorie deficit can significantly lower your BMI, waist size, and improve your heart health markers like blood pressure and cholesterol. This approach may be superior to standard 'heart-healthy' diets for maintaining weight loss long-term.

Both volumetric dieting (energy density ≤ 1.5 kcal/g) and time-restricted eating (8-hour window) produce equivalent reductions in body weight and fat mass while preserving lean body mass in middle-aged, physically active adults over 12 weeks.

If you want to lose fat and keep muscle without changing your exercise routine, you can choose either to eat lower-energy-density foods (more volume, fewer calories per gram) or to eat all your calories within an 8-hour window. Both methods worked equally well in this study. Choose the one you can stick to consistently, as adherence was higher for the time-restricted eating group.

Intermittent severe caloric restriction (3 days/week, 600-800 kcal) combined with habitual intake on other days for 6 weeks produces significant weight loss primarily from android fat mass while preserving fat-free mass and maintaining metabolic health in active athletes.

If you are an active athlete needing to lose weight, try restricting calories to 600-800 kcal on 3 alternating days (e.g., Mon/Wed/Fri) while eating normally on the other 4 days for 6 weeks. This method preserves muscle better than daily dieting and is easier to stick to socially. Ensure you are eating enough protein on non-restriction days to support your training.

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.

Healthcare professionals should routinely advise obese patients to lose weight through a combination of low-calorie diet and increased physical activity.

Ask your doctor for advice on weight management. Professional guidance increases your chances of successfully attempting to lose weight.

Altered lifestyle interventions, specifically increased exercise and improved dietary habits, are more effective than pharmacological treatments for improving insulin sensitivity in patients with Nonalcoholic Steatohepatitis (NASH).

For individuals with fatty liver disease or NASH, focusing on lifestyle modifications—specifically increasing physical activity and improving dietary quality—is a primary strategy to improve insulin sensitivity. This approach is suggested to be potentially more effective than pharmacological attempts to correct insulin sensitivity alone. Patients should prioritize these behavioral changes as a core part of their management plan.

Multicomponent lifestyle interventions (diet, exercise, behavioral strategies) are recommended for all women with PCOS and excess weight to achieve 5-10% weight loss, which significantly improves hormonal outcomes, insulin resistance, and quality of life.

If you have PCOS and carry extra weight, start with a plan that combines better eating, regular movement, and behavioral strategies like tracking your progress. Aim to lose just 5-10% of your body weight over six months; this small change significantly improves your hormones, insulin resistance, and how you feel. Work with a provider who respects your individual preferences and avoids weight stigma.

Lifestyle modification, specifically education, self-empowerment, and weight management, is the prioritized first-line intervention for the prevention and management of excess weight in women with PCOS.

Start with education and self-empowerment. Focus on managing weight through lifestyle changes as your primary tool. This is the recommended first step before considering medications.

Successful long-term weight loss maintenance is associated with higher initial weight loss, reaching a self-determined goal weight, maintaining a physically active lifestyle, and adhering to a regular meal rhythm including breakfast.

To maintain weight loss, aim for a significant initial drop, set and reach your own realistic weight goal, stay physically active, eat regular meals (especially breakfast), and monitor your intake. Avoid rigid 'all or nothing' dieting; instead, practice flexible control.

Psychological factors including internal motivation, self-efficacy, effective coping strategies, and an internal locus of control are positively associated with weight loss maintenance.

Cultivate internal motivation and self-efficacy. Take responsibility for your lifestyle changes rather than relying on external pressure. Develop coping strategies for stress that do not involve eating.

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.

Structured exercise interventions significantly improve quality of life, physical functioning, and peak oxygen consumption in breast cancer patients and survivors.

Engage in a structured exercise program combining aerobic activity (like walking or cycling) and resistance training (weights or bands) 2-3 times per week. Start at a moderate intensity where you can talk but not sing, and gradually increase the duration or weight. This approach has been proven to significantly improve your quality of life, physical function, and heart health during and after breast cancer treatment.

Adherence to behavioral advice (diet, exercise, smoking cessation) is associated with a substantially lower risk of recurrent cardiovascular events.

For heart patients, sticking to advice on diet, exercise, and quitting smoking is crucial for preventing another heart event. Even small improvements in these areas can significantly lower your risk.

Vigorous exercise is more effective than moderate exercise for reducing subcutaneous fat and improving body composition, even when total energy expenditure is lower.

Don't worry about staying in a 'fat burning' low-intensity zone. Vigorous exercise can lead to greater fat loss even if you burn fewer total calories than a long, slow walk, likely due to metabolic after-effects.

Combining progressive resistance training with adequate dietary protein (1.2-1.5 g/kg/day) and Vitamin D is the primary evidence-based management strategy for sarcopenia in older adults.

For older adults at risk of muscle loss, the most effective strategy is not a single pill or diet, but a combination of supervised resistance exercise (for at least 3 months), ensuring protein intake of 1.2-1.5 grams per kilogram of body weight daily, and correcting Vitamin D deficiency. This multi-pronged approach is currently the best way to maintain muscle function and prevent disability.