Browse the evidence

Current hypertension guidelines do not yet recommend incretin-based therapies as first-line treatment because no large-scale trial has used blood pressure reduction as its primary endpoint, despite robust secondary data showing efficacy.

You cannot currently get GLP-1 medications prescribed specifically for high blood pressure as a first-line treatment under standard insurance guidelines. They are primarily approved for diabetes and weight loss. However, if you have both hypertension and obesity/diabetes, your doctor may prescribe them for those conditions, which will incidentally lower your blood pressure significantly.

Protein supplementation does not significantly augment the effects of resistance exercise training on muscle mass or strength in older adults (≥70 years) compared to resistance exercise alone.

If you are over 70 and doing resistance training, you do not need to buy protein supplements to get better results. The research shows that getting protein from food is just as effective as supplements for building muscle and strength in this age group. Focus on eating enough protein overall rather than spending money on powders.

Handgrip strength reference ranges vary significantly by geographic region and ethnicity, meaning a single global standard is invalid for clinical risk stratification.

If you are using handgrip strength to assess your health or frailty risk, do not compare your score to a generic global chart. Your 'normal' depends heavily on your geographic region and ethnicity. Use region-specific reference ranges to accurately interpret your strength levels, as values in South Asia or Africa are naturally lower than those in Europe or North America.

Genetic variants (SNPs) associated with obesity, diabetes, and cardiovascular disease generally have small effect sizes and explain a small fraction of the overall variance in these conditions.

Understanding your genetics does not give you a free pass or a guaranteed outcome. Most genetic risks are small and can be managed. Focus on modifiable risk factors like BMI, blood pressure, and diet quality.

Implementation of Enhanced Recovery After Surgery (ERAS) protocols in bariatric surgery significantly reduces postoperative nausea and vomiting, intraoperative time, time to mobilization, intensive care unit stay, and total/functional hospital stay compared to standard care, without increasing complication rates.

For bariatric surgery units, adopting ERAS protocols is a high-value intervention. It significantly reduces patient suffering (nausea/vomiting), shortens hospital stays, and speeds up mobilization without increasing surgical risks like leaks or bleeding. Implementation should be prioritized where feasible.

The metabolic syndrome is a cluster of risk factors that identifies individuals at increased lifetime risk for atherosclerotic cardiovascular disease (ASCVD) and type 2 diabetes, but it is not an adequate tool for estimating short-term (10-year) cardiovascular risk.

Having metabolic syndrome means you are at higher risk for heart disease and diabetes over your lifetime, but it does not mean you will have a heart attack soon. Use standard risk calculators (like Framingham) to check your 10-year risk. Focus on lifestyle changes to lower your long-term risk, especially if you do not yet have diabetes.

Cardiovascular-Kidney-Metabolic (CKM) syndrome is a systemic disorder characterized by pathophysiological interactions among metabolic risk factors, chronic kidney disease (CKD), and the cardiovascular system, leading to multiorgan dysfunction and high adverse outcome rates.

If you have high blood pressure, diabetes, or kidney issues, recognize that these conditions are linked and worsen each other. Managing one without addressing the others is less effective. Seek integrated care that looks at your heart, kidneys, and metabolic health together to prevent serious complications like heart failure or kidney failure.

Chronic Kidney Disease (CKD) significantly amplifies cardiovascular risk, with albuminuria and low GFR being strong predictors of major atherosclerotic and heart failure events, often making CVD the leading cause of death in CKD patients.

If you have kidney disease, your risk of heart problems is significantly higher. Regular monitoring of your heart health, along with managing blood pressure and blood sugar, is essential to prevent heart failure and heart attacks.

High levels of physical activity do not eliminate the increased mortality risk associated with obesity (BMI ≥30); obese active women have nearly double the mortality risk of lean active women.

Do not assume that being physically active makes you immune to the risks of obesity. This study shows that even highly active obese women have nearly twice the risk of death compared to lean, active women. To maximize longevity, you must prioritize both maintaining a healthy weight and staying physically active; exercise alone is not a sufficient shield against the risks of excess adiposity.

High blood pressure is the single largest contributor to cardiovascular disease deaths globally, followed by smoking in men and high BMI in women.

Prioritize blood pressure management above all other cardiovascular risk factors, as it causes the most deaths globally. For men, quitting smoking is the next most critical step. For women, maintaining a healthy body weight is the second most important factor after blood pressure.

The Recommended Dietary Allowance (RDA) for linoleic acid (an n-6 fatty acid) is approximately 0.5% of daily calories, which meets the needs of 97-98% of the population, while the Estimated Average Requirement (EAR) is near 0.1%.

Aim for linoleic acid (an n-6 fatty acid) to make up about 0.5% of your total daily calories. This is a quantitative target that meets the needs of almost everyone.

Intentional long-term weight loss in overweight or obese adults with type 2 diabetes increases the risk of frailty fractures (hip, pelvis, upper arm/shoulder) despite not increasing total or hip fracture rates overall.

If you have type 2 diabetes and are planning to lose weight, be aware that this specific intervention (intensive lifestyle change) has been linked to a higher risk of breaking bones in the hip, pelvis, or shoulder area, even if your overall fracture risk doesn't change. To mitigate this, focus on preserving muscle mass through resistance training and ensure adequate calcium and vitamin D intake, as bone loss is a key mechanism for this increased risk.

The vast majority of established obesity-predisposing genetic loci do not significantly influence weight loss or weight regain outcomes in response to lifestyle interventions.

Do not rely on commercial genetic tests for common obesity genes (like FTO) to predict whether a diet or exercise program will work for you. This research indicates that for most genetic variants associated with obesity, there is no significant difference in how well people respond to lifestyle interventions. Focus on proven lifestyle strategies (caloric deficit, physical activity) rather than genetic testing for prediction.

Global dietary intake data is highly available for fruits, non-starchy vegetables, and sugar-sweetened beverages, but critically sparse for iodine, vitamin A, plant protein, selenium, added sugar, and animal protein.

When evaluating global diet quality, recognize that data on fruits, vegetables, and sugary drinks is robust, but data on essential micronutrients (iodine, selenium, vitamin A) and specific protein sources is often missing. This limits our ability to assess diet-related health risks in many populations accurately.

Perioperative fish oil supplementation (EPA+DHA) does not increase the risk of major bleeding in cardiac surgery patients and may reduce blood transfusion requirements.

If you take fish oil for heart health, you likely do not need to stop it before heart surgery. This study of over 1,500 patients showed that continuing fish oil did not increase bleeding risk and actually reduced the amount of blood transfused. Consult your surgeon, but current evidence supports continuing supplementation.

Obesity is not caused by a lack of willpower but is the result of complex interactions between individual biological factors and environmental determinants, requiring multifactorial prevention and treatment strategies.

Stop blaming yourself for your weight. Obesity is a complex disease influenced by biology and your environment, not just willpower. Effective management requires addressing both individual health behaviors and the broader environment, such as access to healthy food and safe spaces for activity.

Environmental-level factors, such as the food environment and socioeconomic status, interact with individual-level biological factors to drive obesity, and interventions focusing solely on the individual are suboptimal.

To manage weight effectively, you need to address both your personal habits and your environment. This might mean seeking out healthier food options, advocating for policy changes, and understanding how your biology interacts with your surroundings.

BMI is an insufficient diagnostic tool for obesity because it fails to differentiate between fat mass and lean body mass, leading to misclassification.

Do not rely solely on BMI to determine your health status. It fails to distinguish between muscle and fat. Ask your doctor for more precise assessments like waist circumference or body composition analysis to get a true picture of your metabolic risk.

Heart disease and stroke remain the leading causes of death globally, with significant disparities in prevalence and mortality across different racial and ethnic groups, necessitating targeted public health interventions to address structural racism and health equity.

Focus on managing key risk factors like blood pressure, cholesterol, and blood sugar, while being aware of and addressing potential systemic barriers to healthcare access.

A cumulative deficit frailty index, constructed from 26 non-traditional health deficits, is a stronger predictor of cardiovascular events and mortality than traditional risk scores (like Framingham) and provides incremental prognostic value independent of those traditional factors.

If you are over 65 or have heart disease risk factors, ask your doctor to assess your 'frailty' using a deficit accumulation model (checking for symptoms, lab abnormalities, and functional limitations), not just standard cholesterol and blood pressure numbers. This assessment predicts heart attacks and death more accurately than traditional scores and can help prioritize preventive care.

Bariatric surgery provides the most durable and dramatic weight loss among available treatments, significantly reducing long-term mortality and diabetes incidence.

For severe obesity, surgery is the most effective long-term solution, offering the best chance for durable weight loss and reduced health risks like diabetes and mortality. Consider it if other methods have failed or if your health is at significant risk.

Empagliflozin (10-25 mg daily) reduces the risk of major adverse cardiovascular events (MACE), cardiovascular death, all-cause mortality, and hospitalization for heart failure in patients with type 2 diabetes at high cardiovascular risk.

If you have type 2 diabetes and established heart disease, adding empagliflozin (10-25 mg daily) to your standard care significantly lowers your risk of heart attack, stroke, heart failure hospitalization, and death from any cause. While you may experience an increased risk of genital infections, the cardiovascular benefits are substantial and well-documented in this large trial.

Prebiotics are defined as substrates selectively utilized by host microorganisms to confer a health benefit, distinguishing them from non-selective dietary fibers and non-microbial agents.

Not all gut-friendly foods are prebiotics. To be a prebiotic, a substance must be selectively eaten by beneficial bacteria to produce a specific health benefit. Common examples like inulin and FOS fit this, but general fibers like cellulose do not necessarily qualify.

Health benefits from prebiotics are mediated by the selective growth of specific microbial taxa and their metabolic products (e.g., SCFAs), rather than the substrate itself acting directly on host cells.

Prebiotics work by feeding specific gut bacteria. These bacteria then produce beneficial compounds (like short-chain fatty acids) that improve your health. You need a healthy gut microbiome for prebiotics to work.