Browse the evidence

Interventions using tailored individual lifestyle coaching and interactive group sessions are more effective than those using only passive materials like pamphlets or text messages.

For lasting dietary changes, seek programs that offer personal coaching and group interaction. Simply reading pamphlets or receiving text messages is unlikely to be enough. Look for programs that involve trained professionals and interactive sessions.

Early response to treatment (≥5% weight loss in 3 months) is a strong predictor of long-term success; non-responders should switch therapies.

Monitor your weight closely in the first 3 months of starting a new obesity medication. If you haven't lost at least 5% of your body weight, talk to your doctor about switching to a different therapy. Early success is the best predictor of long-term success.

Digital health interventions (eHealth) are effective for the prevention and treatment of overweight and obesity in adults, producing statistically significant improvements in BMI and body weight compared to control groups.

Use a digital health tool (app, website, or SMS program) designed for weight management. Consistency is key; choose a platform you will actually use daily. While the average weight loss is modest (approx. 0.7 BMI units), it is a statistically significant benefit over doing nothing. Combine this with basic dietary awareness for best results.

Adhering to the MyPlate dietary pattern (focusing on fruits, vegetables, whole grains, and protein) reduces central adiposity (waist circumference) in overweight, low-income patients, offering a practical alternative to calorie counting.

Follow the MyPlate guidelines: fill half your plate with fruits and vegetables, one-quarter with whole grains, and one-quarter with quality protein. You do not need to count calories. This approach helps reduce belly fat (waist circumference) and is easier to stick to long-term than strict calorie counting, especially if you find tracking numbers stressful.

Intensive, multi-component behavioral interventions (12-26 sessions/year) delivered in primary care settings produce clinically significant weight loss (4-7 kg), whereas low-intensity brief counseling by PCPs alone yields negligible results.

To lose significant weight, you need a structured program with frequent check-ins (weekly at first, then bi-weekly, then monthly) over a year. Simply telling you to 'eat less' during a brief doctor's visit is not enough. Look for programs that offer at least 12-26 sessions with a dietitian, psychologist, or trained coach.

Collaborative care models using trained medical assistants or external dietitians as weight loss coaches produce greater weight loss than PCP-led brief counseling, especially when combined with meal replacements or medication.

Ask your primary care office if they have a 'weight loss coach' (often a nurse or medical assistant) who can see you monthly. This collaborative model, where the doctor handles medical risks and the coach handles behavioral support, is more effective than seeing the doctor alone for weight loss.

Intermittent fasting and time-restricted eating are effective weight loss strategies comparable to daily calorie restriction.

Try intermittent fasting (like 16:8 time-restricted eating or 5:2 fasting) if you struggle with counting calories. It helps restrict intake by limiting the eating window. Be aware of side effects like dizziness, especially if you take diabetes medication.

Cognitive-behavioral treatment for obesity, delivered in weekly group sessions for 4-6 months, typically produces an 8-10% reduction in initial body weight, which is associated with clinically meaningful improvements in chronic conditions.

Commit to a structured program that meets weekly for 4-6 months. Focus on tracking your food and activity, setting specific weekly goals, and learning to handle setbacks as learning opportunities rather than failures. To keep the weight off, stay in touch with the program or a support group after the initial 6 months.

Structured behavioral lifestyle interventions (BLIs) with frequent feedback and support produce clinically meaningful weight loss (≥5%) in overweight or obese patients with type 2 diabetes, regardless of specific diet or exercise components.

For T2DM patients, the specific diet or exercise type matters less than the structure of the support. Choose a program that offers frequent feedback, regular monitoring, and social support. Consistency in attending sessions and receiving feedback is more critical than the specific 'brand' of diet or exercise.

Time-restricted eating (TRE) with a 9-hour eating window (1000–1900 h) is non-inferior to standard individualized dietetic guidance for improving HbA1c and glycemic control in adults with type 2 diabetes over a 6-month period.

If you have type 2 diabetes, try limiting your daily eating to a 9-hour window, specifically between 10:00 AM and 7:00 PM. You do not need to restrict calories explicitly, but you will likely eat less spontaneously. This approach is just as effective as standard dietitian advice for lowering HbA1c and may be easier to stick with because it is simpler. Ensure you are not on medications that require strict meal timing (like insulin or sulphonylureas) without medical supervision.

Extreme weight-loss diets (low-carb, low-fat, or VLCD) are not sustainable long-term and lead to rapid weight regain, whereas balanced, calorie-restricted diets combined with physical activity and counseling are superior for sustained weight management.

Avoid crash diets that restrict entire food groups or severely limit calories. Instead, adopt a balanced diet with a moderate calorie deficit (500-1000 kcal/day), incorporate regular exercise, and consider counseling to help you stick with it long-term.

Regular moderate-intensity physical activity reduces the incidence of type 2 diabetes by approximately 30%, with this benefit being largely independent of changes in body weight.

To lower your risk of type 2 diabetes, aim for regular moderate-intensity activity, such as brisk walking. You do not need to perform high-intensity workouts to see a significant reduction in risk (approx. 30%), and these benefits occur even if your body weight does not change significantly.

Reducing ultra-processed food intake after a colorectal cancer diagnosis is associated with lower cardiovascular disease mortality compared to maintaining or increasing UPF intake.

If you have had colorectal cancer, cutting back on ultra-processed foods after your diagnosis can significantly lower your risk of dying from heart disease. Even a moderate reduction (e.g., 2-3 servings per day less than before) is associated with better outcomes.

Walking for at least 30 minutes per day significantly reduces the risk of developing type 2 diabetes.

Walk for at least 30 minutes every day. You do not need to run or lift weights to significantly lower your risk of type 2 diabetes. Consistency is key.

Sedentary behavior is an independent risk factor for cardiovascular disease, type 2 diabetes, and all-cause mortality, regardless of exercise levels.

Try to avoid sitting for more than 90 minutes at a time. Stand up and move regularly, even if you exercise.

Frequent home cooking (≥7 dinners/week) is associated with higher overall diet quality (HEI-2015) compared to infrequent cooking (0-2 dinners/week), with the magnitude of benefit being significantly stronger in higher-income adults than in lower-income adults.

Cooking dinner at home more often, specifically aiming for 7 times a week, is linked to better diet quality. However, if you have a lower income, simply cooking more often may not significantly improve your diet quality unless you also have access to affordable, healthy ingredients. Focus on accessible healthy options like frozen vegetables to bridge the gap between cost and nutrition.

Engaging in higher levels of physical activity (≥90 minutes/day) is associated with a statistically significant reduction in the risk of incident clinical depression in older women compared to low activity levels (<10 minutes/day).

To lower your risk of clinical depression, aim for at least 90 minutes of physical activity per day. This doesn't require intense gym workouts; walking, jogging, or gardening all count. The study shows that combining this activity with limiting television watching (to under 5 hours a week) provides the strongest protection. Start with walking, as it is the most common and accessible form of activity for older women.

The combination of high physical activity (≥90 minutes/day) and low television watching (0-5 hours/week) results in the strongest reduction in clinical depression risk compared to the combination of low activity and high TV watching.

For the best protection against depression, aim for 90 minutes of daily physical activity and limit television watching to 5 hours or less per week. This combination offers the strongest benefit, reducing risk by 38% compared to those with low activity and high TV time. Start by adding 30 minutes of walking to your day and tracking your TV time to see if you can reduce it.

Substituting 60 minutes of television watching with 60 minutes of brisk or very brisk walking significantly reduces the risk of incident depression in older women, whereas substituting with slow or average-paced walking does not.

If you want to reduce your risk of depression by swapping TV time for exercise, make sure you walk briskly. Simply replacing TV with slow walking does not significantly lower depression risk in this population. Aim for a pace of 3-3.9 miles per hour (brisk) for 60 minutes to see a 15% reduction in risk.

Using taste-focused labels (emphasizing specific flavors and positive experiences) on vegetable dishes significantly increases vegetable selection and consumption compared to health-focused or basic labels.

When labeling healthy food, especially vegetables, describe the specific flavors, ingredients, and preparation methods (e.g., 'Roasted Garlic Broccoli') rather than just listing health benefits (e.g., 'High in Vitamin C'). This approach leverages the natural human preference for taste, making healthy choices more appealing and increasing the likelihood that people will select and consume them.

Performing low-load resistance training (30% 1RM) three times per week during a period of reduced physical activity (step-reduction) prevents muscle mass loss and maintains muscle protein synthesis rates in older men.

If you are older and your daily activity drops significantly (e.g., due to illness or injury), perform light resistance exercises (using about 30% of your maximum lifting capacity) three times a week. This simple routine can help preserve your muscle mass and strength, even if you are not walking as much as usual. You do not need to lift heavy weights to get this benefit.

A structured 6-month weight maintenance program following a successful weight loss intervention prevents significant weight regain in worksite participants.

After losing weight, don't assume you're 'cured.' Transition to a maintenance phase with less frequent check-ins (e.g., monthly). This helps you solidify habits without the burden of weekly sessions, preventing the common trap of weight regain.

Individualized medical nutrition therapy (MNT) by a registered dietitian reduces hemoglobin A1c by 1-2% in type 2 diabetes, with the greatest benefit seen in newly diagnosed patients.

Work with a registered dietitian to create a personalized eating plan rather than following a generic 'diabetes diet.' Focus on nutrient-dense foods, portion control, and matching your food intake to your medication (if on insulin). Consistency and professional support are more important than adhering to a specific macronutrient ratio.

High-intensity resistance training (HI-RT) combined with moderate protein supplementation significantly reverses sarcopenia (increases skeletal muscle mass and strength) in older men with osteosarcopenia, whereas protein supplementation alone is insufficient to maintain muscle mass and function.

If you are an older man with low muscle mass and weak bones, doing just one set of resistance exercises twice a week, pushing close to your limit, is highly effective. You must combine this with adequate protein (up to 1.5g per kg of body weight) and Vitamin D. Simply taking protein without exercising will not stop muscle loss. This approach is safe, supervised, and efficient, requiring only about 50 minutes per session.