Browse the evidence

Semaglutide 2.4 mg administered once weekly for 6 months produces a mean body weight reduction of 10.5 kg (10.0%) in adults with obesity or overweight, with 79% of patients achieving clinically significant weight loss (≥5%).

If you have obesity or overweight with a related health condition, semaglutide 2.4 mg taken once weekly can help you lose an average of 10% of your body weight over 6 months. This is significantly more effective than diet and exercise alone for many people. You should discuss with your doctor if this treatment is appropriate for you, especially if you haven't used other weight-loss medications before.

In individuals with obesity, intentional or observed weight loss reduces the risk of coronary heart disease (CHD) and myocardial infarction compared to weight maintenance.

If you have obesity, losing weight significantly lowers your risk of heart attacks and coronary heart disease. While this study noted a potential increase in stroke risk, the strong reduction in heart disease risk suggests that weight reduction is beneficial for cardiovascular health in this population. Focus on sustainable weight loss strategies.

Group-based weight management programmes with intensive, face-to-face support and a focus on group identity and accountability are more acceptable and feasible for adults with severe obesity (BMI ≥35 kg/m²) than remote or less intensive interventions.

If you have severe obesity, look for a weight management programme that is group-based and offers intensive, face-to-face support. The social aspect and accountability to a group with similar experiences can be a powerful motivator. However, be aware that if you have significant physical pain or mental health challenges, you may need a programme that offers flexibility or private options, as standard group activities might not suit everyone.

Female age-group swimmers consuming less than 2000 kcal daily despite high training loads exhibit significant carbohydrate deficiency relative to energy expenditure, leading to an estimated 800 kcal daily energy deficit.

If you are a female swimmer training 6000m daily, your current intake is likely insufficient. You need to increase total calories and specifically carbohydrates to match your expenditure, aiming for at least 7g/kg/day if possible, to avoid energy deficits that impair performance and recovery.

Videoconference-delivered Group Lifestyle Balance (GLB) weight loss intervention achieves statistically equivalent weight loss and higher retention rates compared to traditional in-person delivery over a 12-week period.

If you struggle with attending in-person weight loss classes due to busy schedules or frequent moves, a videoconference-based program like GLB is a viable alternative. This study shows that remote delivery can result in the same amount of weight loss (approx. 5-6% body weight) as in-person classes, while actually keeping more people in the program. To replicate this, you need a reliable internet connection and a smart scale that shares data with your counselor.

A 4- to 8-week intensive lifestyle intervention consisting of a whole-food, plant-based diet (ad libitum, <20% fat) and daily moderate exercise significantly reduces BMI, blood pressure, and fasting glucose in at-risk populations.

Attend a structured lifestyle program (like CHIP) that teaches you to eat whole plant foods without counting calories or restricting portions. Focus on filling your plate with fruits, vegetables, whole grains, and legumes. Add a daily 30-minute walk. This approach leverages the natural satiation of high-fiber foods to reduce weight and improve blood markers, even if you have limited income or access to healthcare.

Videoconference-delivered group weight loss programs achieve clinically significant weight loss (mean 7.4% in completers) comparable to in-person delivery, with higher retention rates in videoconference formats.

If you are looking for a weight loss program, a videoconference-based group program can be just as effective as meeting in person. In fact, people in videoconference groups were more likely to stick with it and report their weight. Look for programs that offer weekly group support, clear nutritional guidelines (like high fiber and balanced macros), and tools for tracking progress. The format (online vs. in-person) matters less than the consistency of the support and the nutritional strategy.

Twelve weeks of supervised resistance training significantly improves physical performance and reduces frailty prevalence in post-hospitalized older adults, regardless of whether leucine-enriched whey protein is consumed post-exercise.

If you are an older adult recovering from hospitalization, start supervised resistance training twice a week. You do not need to buy leucine-enriched protein supplements to see improvements in your physical function and frailty status. The act of training itself is sufficient to drive significant recovery.

Individualized nutritional interventions based on Mediterranean/DASH principles, adapted to local socioeconomic contexts, significantly improve glycemic control (HbA1c, FBG), anthropometric markers (weight, BMI, waist circumference), and cardiovascular risk profiles in Type 2 Diabetes patients over 12 months compared to standard medical care alone.

For Type 2 Diabetes patients, a personalized diet based on Mediterranean/DASH principles, adapted to local foods and budget, significantly improves blood sugar, weight, and heart health markers over a year. This approach works even for sedentary individuals and those with limited income, provided the plan is flexible and adjusted regularly by a nutritionist. Standard medical care alone is not enough to prevent worsening of these markers.

Nutrition education interventions in indoor team sports significantly improve dietary intake compliance, particularly in female athletes, though often still fall short of official recommendations.

If you are an indoor team athlete, seek out structured nutrition education or counseling. It works, especially for women, to improve your intake. However, do not assume you will hit all targets automatically; you likely still need to consciously push your carbohydrate and energy intake higher than your natural habits.

A 12-week virtual multidisciplinary intensive lifestyle intervention (telemedicine + m-health) produces weight loss and A1C improvements equivalent to an in-person program for patients with type 2 diabetes and obesity.

If you have Type 2 Diabetes and obesity, a 12-week virtual program using telemedicine and health apps can help you lose weight and improve blood sugar just as well as going to a clinic in person. The program involves weekly 2-hour sessions with a team (doctor, dietitian, exercise physiologist, psychologist) where you log your food and exercise, adjust medications, and learn behavioral strategies. You need to be comfortable using technology, as the program relies on apps and remote monitoring.

Fast weight loss achieved via severe energy restriction (65-75% deficit) using very low energy diet (VLED) products supplemented with whey protein isolate can safely preserve fat-free mass and induce ketosis without compromising micronutrient intake, provided protein intake is matched to body weight (1 g/kg).

To lose weight quickly and safely, aim for a severe calorie deficit (65-75% of your maintenance calories) using a structured Very Low Energy Diet (VLED) like meal replacement shakes. Crucially, add a plain whey protein powder to ensure you get 1 gram of protein per kilogram of your body weight daily, and keep carbs under 100g to induce ketosis, which helps control hunger. Adjust your shake count every 4 weeks as you lose weight to keep protein intake proportional to your new body weight.

Matching absolute protein intake (1 g/kg body weight) across fast and slow weight loss interventions is critical to preserve fat-free mass and manage appetite, regardless of the total energy deficit.

Regardless of whether you are cutting calories aggressively or moderately, aim to eat 1 gram of protein for every kilogram of your body weight each day. This absolute target ensures you preserve muscle mass and stay full, whereas percentage-based protein goals can lead to inconsistent results depending on how many calories you are eating.

Breast cancer survivors who engage in moderate-to-vigorous physical activity (≥9 MET-hours/week) experience a significantly reduced risk of breast cancer recurrence and all-cause mortality compared to inactive survivors.

Aim for at least 9 MET-hours of moderate-to-vigorous activity per week, which translates to roughly 3 hours of brisk walking. This level of activity is strongly associated with a 50% reduction in breast cancer-specific mortality and recurrence risk. If you were inactive before diagnosis, increasing your activity to this level post-diagnosis offers the greatest survival benefit.

A 12-month individualized nutritional counseling intervention in primary care significantly reduces body weight, BMI, and abdominal adiposity in overweight women, with greater anthropometric improvements observed in participants attending more than 9 consultations.

For overweight women, a structured, long-term (12-month) nutritional counseling program integrated with regular physical exercise in primary care leads to modest but significant weight loss (approx. 3%) and reduced abdominal fat. Success is strongly linked to adherence; attending more than 9 sessions yields significantly better results. The approach focuses on small, sustainable behavioral changes (e.g., increasing meal frequency, reducing liquid intake during meals, increasing fruit/vegetable consumption) rather than drastic restrictions, making it viable for low-income populations.

Referral to a structured, telephone-based weight management and healthy lifestyle program significantly reduces knee pain intensity and improves physical function in overweight or obese patients with knee osteoarthritis compared to usual care.

If you have knee osteoarthritis and are overweight, ask your doctor about a free, telephone-based weight management program. These programs use health coaches to help you make sustainable changes to your diet and activity levels over 6 months. This approach can reduce knee pain and improve function without requiring you to travel to a clinic, which is especially helpful if your knee pain makes movement difficult.

Long-term maintenance of clinically significant weight loss (≥5% reduction) is achievable in a real-world clinical setting through continuous use of anti-obesity medications (AOMs), with 65.3% of compliant patients maintaining loss over 2 years.

To maintain significant weight loss long-term, you likely need to stay on anti-obesity medication (AOMs) indefinitely, just like managing blood pressure. This study shows that about two-thirds of people who stick with their medication for two years keep the weight off. Don't drop out early; adherence is the biggest predictor of success. If cost is a barrier, ask your doctor about off-label options like metformin, which is cheap, safe, and effective for many.

In Japanese patients with type 2 diabetes, a higher percentage of total energy intake from carbohydrates (>60%) is positively correlated with elevated glycated hemoglobin (HbA1c) levels, suggesting that limiting carbohydrate intake to below 60% of total energy may improve glycemic control.

If you have type 2 diabetes, aim to keep your carbohydrate intake to less than 60% of your total daily energy. This study of Japanese patients found that eating more than 60% of your calories from carbohydrates was linked to higher blood sugar levels (HbA1c), even when total calories were controlled. You don't need to eliminate carbs, but avoiding excessive amounts may help you manage your blood sugar better.

Bodybuilding coaches recommend protein intakes of 2.0–4.84 g/kg/day, which exceeds the evidence-based recommendation of 1.4–2.0 g/kg/day for general physically active individuals, though this higher range may be necessary for highly muscular competitive bodybuilders.

If you are a competitive bodybuilder, especially if you are enhanced, your coach may prescribe protein intakes between 2.0 and 4.84 g/kg/day. This is significantly higher than the general recommendation of 1.4–2.0 g/kg/day. While general guidelines suggest 1.6 g/kg/day maximizes muscle gain, highly muscular athletes may require more to retain lean mass during contest prep. Distribute this protein across 3–7 meals daily.

A culturally adapted Mediterranean-style dietary pattern combined with physical activity promotes sustained, clinically significant weight loss in adults with type 2 diabetes over a 24-month period.

For adults with type 2 diabetes, especially those from minority or low-income backgrounds, a sustainable weight loss strategy involves adopting a Mediterranean-style diet that respects cultural food preferences (e.g., using healthy fats like olive oil and nuts, which are common in Southern cuisine) combined with regular walking. This approach, delivered through culturally sensitive counseling and flexible support (phone or group sessions), can lead to sustained weight loss of approximately 3.7 kg (8 lbs) over two years, which is clinically beneficial for managing diabetes and cardiovascular risk.

Competitive collegiate swimmers in a general preparation phase require a population-safe protein intake of 1.92 g·kg⁻¹·day⁻¹ to maintain nitrogen balance, which is higher than standard endurance athlete recommendations.

If you are a competitive swimmer training 3-4 hours a day, aim for approximately 1.9 grams of protein per kilogram of body weight daily. This is higher than the standard recommendation for casual exercisers. Ensure you are eating enough total calories, as being in a calorie deficit increases your protein needs.

Using an activity tracker (Fitbit) combined with kinesiologist-led physical activity promotion significantly increases physical activity levels and improves specific cardiometabolic risk variables (HDL cholesterol, BMI, waist circumference) in patients with type 2 diabetes compared to kinesiologist-led promotion alone.

For a patient with Type 2 Diabetes, using a simple activity tracker like a Fitbit alongside a structured exercise plan guided by a health professional (like a kinesiologist) is more effective for improving heart health markers (like HDL cholesterol) and reducing waist size than just following the exercise plan alone. The key is using the tracker to stay motivated and adhere to the 150 minutes of moderate activity per week recommended by your provider.

Distributing protein intake evenly across meals (approx. 30 g/meal) maximizes 24-hour skeletal muscle protein synthesis compared to a skewed consumption pattern.

To maximize muscle building, spread your protein out. Aim for about 30 grams of high-quality protein (like meat, eggs, or dairy) at breakfast, lunch, and dinner. This timing strategy works better than eating most of your protein in just one big meal, especially as you age.

Tirzepatide administered at low doses (≤10 mg) for 6 months produces clinically meaningful weight reduction (mean 11.9%) in non-diabetic adults, achieving outcomes comparable to higher doses used in clinical trials.

If you are starting tirzepatide for weight loss without diabetes, you do not need to reach the maximum dose to see significant results. In real-world use, staying on lower doses (like 5mg) for 6 months still resulted in an average 11.9% body weight reduction, which is clinically meaningful.