Browse the evidence

Injectable semaglutide 2.4 mg once weekly produces significant weight loss (mean 15.2% over 104 weeks) and improves cardiometabolic risk factors in adults with obesity.

If you have obesity and struggle to lose weight through diet and exercise alone, ask your doctor about injectable semaglutide (2.4 mg once weekly). It is clinically proven to help you lose an average of 15% of your body weight over two years and improves heart health markers. Be prepared for a slow start to minimize stomach upset, and stick with it as the benefits are significant.

A high-intensity, lifestyle-based obesity treatment program delivered in primary care clinics by embedded health coaches results in clinically significant weight loss (approx. 5%) over 24 months in underserved, low-income populations.

To lose weight effectively, especially if you are in a low-income or underserved area, you need more than just advice from your doctor. This program works by providing you with a dedicated health coach who meets with you weekly for the first six months and then monthly for the next 18 months. They help you set personal goals, provide you with meal-replacement shakes and portion-controlled foods for the first month, and teach you how to manage your diet and physical activity (aiming for 175 minutes of activity per week). You also get an electronic scale to track your weight daily, which helps your coach adjust your plan. This high-intensity support leads to significant, sustained weight loss over two years.

Intermittent Fasting (IMF) produces weight loss equivalent to Daily Caloric Restriction (DCR) when both interventions are delivered with comprehensive behavioral support and equal energy deficits, though IMF may offer better long-term fat mass maintenance.

This paper does not provide results, only a plan. However, it suggests that for weight loss, the specific timing of eating (fasting vs. daily restriction) matters less than sticking to the plan. If you struggle with daily calorie counting, trying fasting might work, but you need strong behavioral support (coaching, tracking) to succeed, just as you would with daily restriction.

Lifestyle interventions, specifically moderate-intensity physical activity for at least 150 minutes per week and caloric restriction, significantly reduce the risk of developing type 2 diabetes in individuals with prediabetes.

To prevent type 2 diabetes, you need to combine diet and exercise. Aim to lose about 7% of your body weight (or reach a BMI of 24) by cutting 400-500 calories from your daily intake and limiting saturated fats. Add at least 150 minutes of moderate exercise each week. Stick with it by getting regular check-ins and support to keep these habits long-term.

Participation in exercise-based cardiac rehabilitation (CR) for patients with coronary heart disease significantly reduces cardiovascular mortality, recurrent myocardial infarction, and hospitalizations compared to no-exercise control, while also improving health-related quality of life.

If you have coronary heart disease, participating in a structured exercise-based cardiac rehabilitation program is one of the most effective steps you can take to lower your risk of dying from heart causes, having another heart attack, or being hospitalized. You do not need to be an elite athlete; programs vary in intensity and setting (home or center), but the key is consistent, supervised physical activity combined with education. This is recommended alongside modern medical treatments, not instead of them.

Daily physical activity of 30-60 minutes, including aerobic and muscle-strengthening exercises, is recommended to prevent and treat metabolic syndrome.

Aim for 30-60 minutes of daily physical activity, combining aerobic exercise and muscle strengthening. You can break this into 10-minute blocks throughout the day. This is essential for preventing and treating metabolic syndrome.

A home-based strength and balance retraining exercise program significantly reduces the rate of subsequent falls in community-dwelling older adults (aged ≥70) who have already experienced a fall, compared to usual geriatric care.

If you are over 70 and have fallen recently, ask your doctor about the Otago Exercise Program. It is a home-based routine of strength and balance exercises that you do 3 times a week, guided by a physical therapist. This specific program has been proven to significantly reduce the number of falls you might experience in the next year compared to standard medical care alone.

A 12-week semiautomated telecoaching intervention using a step counter and smartphone application significantly increases daily physical activity (steps and moderate intensity time) in patients with COPD compared to usual care.

If you have COPD, using a step counter and a smartphone app that sets and adjusts your daily step goals automatically can significantly increase your physical activity. This program works by providing feedback and coaching, helping you stay active even if you have severe symptoms. It is effective across different disease severities and can be used alongside your usual medical care.

Exercise programs (strength, aerobic, flexibility, or neuromotor) of adequate dosage with progression tailored to physical function improve pain and function in hip and knee osteoarthritis.

Start an exercise program tailored to your current ability. It can include strength, aerobic, flexibility, or neuromotor exercises. Progress gradually. Exercise is safe and effective for reducing pain and improving function in osteoarthritis.

Administering tirzepatide (10 or 15 mg once weekly) to adults with overweight or obesity who have already achieved ≥5% weight loss through intensive lifestyle intervention results in substantial additional weight reduction (mean -18.4% from randomization) and prevents weight regain compared to placebo.

If you have successfully lost at least 5% of your body weight through diet and exercise, adding once-weekly tirzepatide (10 or 15 mg) can help you lose an additional ~18% of your body weight and prevent the typical weight regain seen after lifestyle interventions. This approach is particularly relevant if you have obesity-related complications, as it offers superior cardiometabolic benefits compared to lifestyle changes alone.

Semaglutide 2.4 mg improves anthropometric measures (waist circumference, waist-to-height ratio, BMI category) and reduces serious adverse events in patients with obesity and cardiovascular disease, regardless of baseline BMI category.

Semaglutide 2.4 mg not only reduces overall weight but also specifically targets visceral fat (waist circumference) and improves waist-to-height ratio, which are key markers for cardiovascular risk. These benefits, along with a reduced rate of serious adverse events, are consistent across all obesity classes, including those with a BMI just over 30.

Implementing a structured, EHR-driven care process (PATHWEIGH) in primary care mitigates population-level weight gain and increases the likelihood of patients receiving weight-related care, even among those who do not receive direct clinical intervention.

If you are a healthcare system, stop waiting for patients to ask for help. Use your electronic health records to flag patients with high BMI and prompt doctors to discuss weight. Educate your staff that obesity is a chronic disease, not a lifestyle failure. This simple process change can help patients lose weight even if they never see a specialist.

In individuals with type 2 diabetes, a carbohydrate-reduced high-protein (CRHP) diet (30E% carbs, 30E% protein, 40E% fat) induces greater improvements in glycaemic control (HbA1c, diurnal glucose) and reduces liver fat compared to a conventional diabetes diet (50E% carbs, 17E% protein, 33E% fat), even when both diets produce matched weight loss.

For a person with Type 2 Diabetes, switching to a diet with 30% of calories from carbs, 30% from protein, and 40% from fat (while maintaining a calorie deficit to lose weight) can improve blood sugar control and reduce liver fat more effectively than a standard high-carb diabetes diet, even if both diets result in the same amount of weight loss. However, be aware that this diet may not reduce fat stored in the pancreas as much as a standard diet.

Training adaptations (e.g., VO2max, strength) vary greatly between individuals, necessitating monitoring and re-planning for non-responders.

Don't assume a standard program works for everyone. Track your progress (e.g., weight lifted, running pace). If you aren't improving after a few weeks, increase the dose or change the exercise. Personalization through monitoring is key.

Long-acting GLP-1 receptor agonists significantly reduce glycated hemoglobin (HbA1c) levels and body weight in adults, with greater efficacy observed in patients with type 2 diabetes compared to non-diabetic overweight individuals.

Long-acting GLP-1 receptor agonists (like semaglutide or liraglutide) are effective for lowering blood sugar and reducing body weight in adults. The effect is more pronounced in people with type 2 diabetes. Common side effects include gastrointestinal issues, which may vary by individual. Consult a healthcare provider to determine if these medications are appropriate for your specific health profile.

There is a negative correlation between glycemic control (HbA1c reduction) and body weight reduction at the between-study level in all participants, but a positive correlation exists when analyzing patients with diabetes or non-diabetic participants separately.

For people with diabetes, GLP-1 RAs tend to improve both blood sugar and weight loss together. For non-diabetic individuals, these drugs still cause weight loss, but this may not translate to improved blood sugar markers since their levels are already normal. The relationship between weight loss and glycemic control is complex and depends on your starting health status.

GLP-1 receptor agonists (semaglutide, tirzepatide) and bariatric surgery produce substantial weight loss (>10-15%) and improve cardiometabolic risk factors, but weight regain is common upon discontinuation, often necessitating lifelong treatment.

GLP-1 medications and surgery are currently the most effective tools for significant weight loss and metabolic improvement. However, they are not 'cures'; stopping them typically leads to weight regain. If you choose this path, prepare for it to be a long-term or lifelong commitment, and verify insurance coverage or affordability before starting.

Bariatric surgery is recommended for individuals with BMI ≥ 40 kg/m2, or BMI ≥ 35 kg/m2 with comorbidities, to achieve long-term weight loss, diabetes remission, and reduced mortality.

If you have a BMI of 40 or higher, or 35 or higher with health issues like diabetes or high blood pressure, bariatric surgery is a highly effective option. It leads to greater long-term weight loss and diabetes remission than medical treatment alone, and reduces long-term mortality. Discuss this with a specialist to see if you are a candidate.

A 12-week smartphone app intervention promoting overall healthy eating habits (focusing on food patterns rather than specific nutrients) improves dietary intake and clinical markers in patients with type 2 diabetes.

Use a dedicated health app for 12 weeks that guides you through one healthy eating topic per week (like vegetables or sugar). The app provides daily reminders and feedback. This structured, behavior-focused approach is designed to help you build sustainable healthy habits without needing to count specific nutrients.

Testosterone therapy in older men with low testosterone and symptoms improves sexual function, anemia, and bone mineral density, and prevents type 2 diabetes in high-risk men, while demonstrating cardiovascular safety in large RCTs.

If you are an older man with low testosterone and symptoms, testosterone therapy can improve sexual function, blood counts, and bone density. For those at high risk of diabetes, it significantly reduces that risk. Large recent studies confirm it is safe for the heart and prostate, so discuss this with your doctor if you meet the criteria.

Weekly subcutaneous semaglutide (titrated to 2.0 mg) significantly reduces body weight in clozapine-treated patients with schizophrenia and obesity compared to placebo over 36 weeks.

This protocol outlines a clinical trial for using semaglutide to treat obesity in people with schizophrenia taking clozapine. It is not a general recommendation but a research study. If you are interested, consult your psychiatrist about eligibility for clinical trials, as this specific intervention is currently under investigation for this population.

A phone-based intervention using Motivational Interviewing (MI) principles delivered by a trained nurse significantly improves adherence to Continuous Positive Airway Pressure (CPAP) therapy in patients with Obstructive Sleep Apnea Syndrome (OSAS) compared to usual care alone.

If you have sleep apnea and are struggling to use your CPAP machine, standard instructions might not be enough. This study suggests that talking with a nurse who uses Motivational Interviewing techniques—focusing on your reasons for wanting to get better and building your confidence—can help you stick with the therapy longer. The key is personalized support: if you are struggling early on, you get more frequent check-ins to help you overcome barriers.

A Low Carbohydrate Diet (LCD) with 12% carbohydrate intake normalizes glucose variability and significantly reduces average blood glucose levels in patients with Type 2 Diabetes Mellitus within two weeks.

For a patient with uncontrolled Type 2 Diabetes, switching to a strict Low Carbohydrate Diet (approx. 12% carbs) can rapidly lower average blood glucose and reduce daily spikes within days. This approach prioritizes hormonal regulation (insulin sensitivity) over simple calorie counting, though it requires medical supervision to manage ketone levels and medication adjustments.

The efficacy of protein supplementation on fat-free mass gains is moderated by age and training status: it is more effective in resistance-trained individuals and less effective in older adults (>45 years).

If you are experienced in resistance training or are over 45, protein supplementation is particularly important for maximizing muscle gains. Novices and younger individuals may see smaller relative benefits from supplementation if their baseline intake is already adequate.