Browse the evidence

Produce prescription programs do not significantly change BMI z-score in children, despite improvements in fruit and vegetable intake and food security.

While produce prescription programs improve diet and food security for children, they may not immediately impact BMI z-score. Focus on the overall health benefits and improved access to nutritious food rather than expecting immediate changes in weight metrics.

Living in less walkable neighborhoods is associated with lower systolic blood pressure, higher HDL cholesterol, and lower likelihood of diabetes, but also lower likelihood of smoking.

While walkable areas might have higher smoking rates, the overall cardiovascular risk is still lower due to the benefits of daily physical activity. If you live in a walkable area, be aware of tobacco availability and consider cessation support. If you live in a less walkable area, prioritize active transport options to offset the higher CVD risk.

Using pedometers is associated with decreased levels of physical activity in adults with Type 2 diabetes, particularly older adults.

Do not assume giving a patient with Type 2 diabetes (especially if over 60) a pedometer will increase their activity. This study found pedometer use was associated with decreased activity. Consider if the patient finds the device burdensome or confusing, and prioritize other behavior change techniques like barrier identification instead.

When inequalities in behavioral weight management interventions do exist, they tend to favor 'more advantaged' groups (e.g., older, higher SES, employed) in terms of trial uptake, intervention adherence, and trial attrition.

If you are from a 'less advantaged' background (e.g., lower income, rural, younger), you may face higher barriers to starting or sticking with a weight loss program. This is not a reflection of your ability but of the program's design requiring high personal agency. Seek programs that reduce these barriers.

Approximately half of patients with type 2 diabetes discontinue SGLT-2 inhibitors or GLP-1 receptor agonists within five years, but a significant portion (approx. 25%) reinitiates therapy within one year of discontinuation, suggesting many discontinuations are temporary pauses rather than permanent abandonment.

If you stop your SGLT-2 inhibitor or GLP-1 RA, it doesn't mean you are done with it. About 1 in 4 people restart within a year. This often happens after a hospital stay. If you pause your medication due to illness or surgery, ask your doctor to help you restart it as soon as it is safe, so you don't lose the long-term heart and kidney benefits.

Adding phenotypic and genotypic data to personalized nutrition advice does not provide added benefit over advice based solely on current diet analysis.

Do not pay for expensive genetic or phenotypic testing for personalized nutrition advice. The Food4Me study showed that advice based only on your current diet is just as effective as advice that includes your genes or body metrics.

Providing individualized genetic risk information alone does not motivate behavior change in diet or physical activity.

Do not rely on genetic testing to motivate you to eat better or exercise. Knowing your genetic risk does not change your behavior. Focus on actionable dietary advice instead.

Individuals with overweight or obesity who enroll in weight loss programs but receive no active intervention (minimal contact control) lose an average of approximately 1 kg over 12 months, contradicting the assumption that they would gain weight.

If you are struggling with weight, know that your motivation to change is a powerful tool in itself. Studies show that simply enrolling in a program, being weighed regularly, and receiving brief advice from a professional can lead to an average loss of about 1 kg in the first year, even without a strict diet or exercise plan. This baseline loss validates your effort and suggests that engagement is a critical first step.

A one-year maintenance program following a 17-week weight loss intervention does not prevent or delay weight regain in severely obese patients compared to weight loss alone.

For severely obese individuals, adding a year of monthly maintenance sessions after a successful 17-week weight loss program (including a very-low-calorie diet) does not improve the likelihood of keeping the weight off compared to just doing the 17-week program. Focus on mastering the behavioral changes and dietary habits during the initial intensive phase, as extended professional contact did not provide additional benefit in this population.

Extending a behavioral weight loss maintenance intervention (monthly brief counseling) for an additional 30 months provides no significant additional benefit in preventing weight regain compared to stopping the intervention after 30 months.

If you have successfully maintained your weight loss for about 2.5 years through behavioral strategies (diet, exercise, self-monitoring), you may not need to pay for or commit to ongoing professional maintenance counseling. The data suggests that the 'maintenance mode' becomes easier over time, and stopping formal support does not necessarily lead to rapid regain for those who have already succeeded.

Receiving one's preferred diet (low-carbohydrate or low-fat) in a weight loss trial is associated with significantly less weight loss compared to not receiving the preferred diet or having no strong preference.

Do not choose a diet based on what you think you 'prefer' or what tastes best. This study found that people who got their preferred diet lost less weight than those who didn't. If you are flexible and willing to try different approaches, you may achieve better results than if you rigidly stick to a diet you prefer. Focus on adherence and caloric deficit rather than preference.

A 12-month multi-component exercise program combined with daily multi-nutrient supplementation (whey protein, calcium, vitamin D) has limited effect on ameliorating adverse musculoskeletal consequences (bone density, muscle mass, physical function) in men with prostate cancer undergoing androgen deprivation therapy, primarily due to modest intervention adherence.

For men on prostate cancer hormone therapy, combining exercise and supplements is challenging to maintain long-term. While leg strength can improve, bone density loss often continues. Prioritize sustainable adherence over complex protocols; if you can't do 3 gym sessions and take daily supplements, focus on what you can consistently do, as the study showed low adherence led to negligible bone benefits.

Nutrition-sensitive programs that utilize direct food transfers or asset transfers (such as livestock or poultry) yield the largest improvements in micronutrient intake (iron, zinc, vitamin A, animal protein) for children under five, but incur significantly higher costs per child reached compared to programs focused on education, media campaigns, or market access.

For maximum nutritional impact in resource-poor settings, direct provision of food or productive assets (like livestock or seeds) to families with young children is more effective at closing critical nutrient gaps (iron, zinc, vitamin A) than education or cash alone. However, this comes at a significantly higher financial cost. Decision-makers must weigh the higher immediate expense against the greater health benefits for children, recognizing that cheaper education-only programs may not sufficiently improve dietary quality.

An intensive lifestyle intervention (ILI) for weight loss in adults with type 2 diabetes and overweight/obesity is not cost-effective over a 9-year period compared to standard diabetes support and education (DSE), as the high cost of delivering the intervention is not offset by sufficient gains in quality-adjusted life years (QALYs).

For patients with type 2 diabetes, intensive lifestyle changes (like losing 7% of body weight) do improve health markers and may save some medical costs, but the program itself is expensive to run. Over 9 years, the health benefits (QALYs) gained are small and may not justify the high cost of intensive counseling for everyone. However, for individuals who prefer to avoid medication, lifestyle modification remains a valid, effective option for improving blood sugar and blood pressure, even if it is not 'cost-effective' from a system-wide perspective.

Standard group-based behavioral weight loss programs do not produce clustered weight loss outcomes among members, meaning individual success is not significantly influenced by the performance of other group members.

If you join a standard group weight loss program, your results will likely depend on your own adherence, not how well your classmates do. The group format itself does not guarantee that you will benefit from their success or fail because of their failure. To get social benefits, the program must explicitly use strategies like team competitions or pre-existing social bonds.

Consumers exhibit significantly higher skepticism toward food advertisements than toward food labels, yet remain generally skeptical of both, including the Nutrition Facts Panel (NFP).

Do not assume that seeing a Nutrition Facts Panel or a government-regulated label automatically means a consumer will trust or use it. Consumers are skeptical of both ads and labels, though they trust labels slightly more. To improve adherence, labels must be designed to overcome this inherent skepticism, perhaps by being clearer and less misleading, rather than relying on the assumption that regulation alone builds trust.

Moderate-intensity lifestyle counseling delivered by primary care clinicians and lifestyle coaches yields negligible net weight loss (~1.3 kg) over 24 months, primarily due to significant weight rebound after the initial 12 months when coaching frequency is tapered.

If you are relying on a primary care weight loss program that involves seeing a coach monthly for a year and then less frequently, do not expect significant long-term weight loss. This study shows that such moderate-intensity interventions result in negligible weight change (~1.3 kg) and often a rebound after the first year. To achieve meaningful weight loss, you likely need more intensive, frequent, or specialized interventions than standard primary care counseling provides.

Enhanced care interventions (physician letter, personalized chart, and registered dietitian counseling) do not significantly improve gestational weight gain outcomes compared to usual care in the aggregate population of women with pregestational obesity.

For pregnant women with obesity, adding intensive lifestyle interventions (dietitian visits, personalized charts, physician letters) to standard care does not significantly improve overall gestational weight gain outcomes compared to standard care alone. However, this lack of benefit is driven by Class I and II obesity patients who do well with standard care; Class III obesity patients specifically benefit from the enhanced intervention.

Women with Class I or Class II obesity achieve better gestational weight gain outcomes with usual care compared to enhanced care interventions.

For pregnant women with Class I or II obesity, standard obstetric care and written educational materials are sufficient to achieve healthy weight gain. Adding intensive lifestyle interventions (dietitian visits, personalized charts) does not improve outcomes and may be unnecessary resource expenditure for these patients.

Body weight stigma acts as a significant barrier to healthcare engagement and long-term weight management success.

If you feel judged by healthcare providers, it is a common and valid experience that can hinder your care. Seek out providers who practice weight-inclusive or stigma-informed care. Addressing the psychological burden of stigma is a crucial part of effective obesity management.

Primary care provider (PCP) referral into a structured behavioral weight loss intervention does not significantly increase weight loss outcomes compared to non-PCP referral methods.

If your doctor refers you to a weight loss program, do not expect the referral itself to guarantee better results than if you had found the program on your own. The study shows that the act of referral does not significantly change weight loss outcomes or adherence rates. Focus on engaging with the program's behavioral strategies (coaching, self-monitoring) regardless of how you entered it.

PCP referral is associated with higher end-of-study patient-provider relationship quality, although it does not improve satisfaction with the intervention or participation rates.

If your doctor refers you to a weight loss program, you may feel a stronger connection with your doctor, which is a positive outcome. However, do not expect this to translate into better weight loss results or higher satisfaction with the program itself. The program's success depends on your engagement with the coaches and materials, not the referral source.

Systematic health system protocols, including consistent diagnosis and electronic health record decision support, are required to effectively treat early metabolic disease and prevent progression to advanced diabetes and cardiovascular disease.

Health systems should implement protocols to consistently diagnose and treat early metabolic disease. This includes using electronic health records to flag at-risk patients and providing decision support for lifestyle, medication, or surgery referrals. This systematic approach improves outcomes and reduces long-term healthcare costs.

Initial patient engagement by cardiologists must be handled with discretion, sensitivity, and non-judgmental communication to avoid reinforcing stigma and alienation, which negatively impact quality of care.

If you are overweight, expect your doctor to be respectful and non-judgmental. If you feel judged, it is okay to express your concerns. A good doctor will listen and work with you at your pace.