Browse the evidence

Higher trunk adiposity is significantly associated with an increased risk of having two or more cardiometabolic risk factors (high blood pressure, low HDL, high triglycerides, high glucose) in both white and African American adults, whereas higher leg adiposity is associated with a decreased risk in these populations.

Focus on body composition distribution, not just total weight. High trunk fat (belly area) is a strong predictor of metabolic issues, while higher leg fat appears protective. While you cannot easily choose where to lose fat, understanding that trunk adiposity is the primary driver of risk highlights the importance of visceral fat reduction strategies over simple caloric restriction if leg mass is preserved.

Supplementation with omega-3 fatty acids significantly reduces triglycerides in individuals with familial hypercholesterolemia, but has no significant impact on total or LDL cholesterol.

For FH patients, high-dose omega-3s (4-6g/day) are effective at lowering triglycerides. However, do not expect them to significantly lower LDL cholesterol. They are best used as an adjunct for triglyceride management, not as a primary cholesterol-lowering strategy.

In Korean adults, an energy intake distribution of 50–60% carbohydrates, 30–40% fat, and 20–30% protein is associated with the lowest all-cause mortality risk.

For Korean adults, aiming for 50-60% of calories from carbohydrates, 30-40% from fat, and 20-30% from protein is associated with the longest life expectancy. This suggests revising current dietary guidelines to lower the recommended carbohydrate range and potentially increase healthy fat intake within this optimal window.

Caloric restriction (CR) and exercise extend lifespan and delay age-related diseases by targeting mitochondrial function, specifically through enhanced ATP production, improved Ca2+ homeostasis, and activation of AMPK/SIRT1 pathways.

To leverage mitochondrial health for longevity, prioritize regular physical activity and consider moderate caloric restriction. Exercise directly improves mitochondrial biogenesis and Ca2+ handling, while CR enhances energy production and antioxidant defenses. Focus on nutrient density to maintain health while reducing overall intake.

Binge Eating Disorder (BED) in patients with Type 2 Diabetes (T2DM) is associated with poorer glycemic control, specifically higher HbA1c levels and increased insulin resistance, independent of BMI in some contexts.

If you have T2DM and struggle with binge eating, addressing the binge episodes is crucial for your blood sugar control. The paper indicates that frequent binges are linked to higher HbA1c and insulin resistance, even when accounting for weight. You should discuss these behaviors with your healthcare provider openly, as they are a known medical risk factor, not a personal failing, and treating BED can improve your diabetes outcomes.

Intensive glucose-lowering strategies in type 2 diabetes significantly reduce the risk of non-fatal myocardial infarction and microvascular complications (retinopathy, nephropathy) compared to standard therapy, but do not significantly reduce major adverse cardiovascular events (MACE) or all-cause mortality.

For people with Type 2 Diabetes, aiming for very low blood sugar levels (intensive control) is beneficial for protecting your eyes and kidneys, and may slightly reduce the risk of non-fatal heart attacks. However, it does not significantly reduce the risk of major heart events, stroke, or death compared to standard control. Therefore, intensive glucose lowering should be combined with aggressive management of blood pressure and lipids, rather than being the sole focus for heart health.

Mandatory labeling of added sugars on packaged foods and beverages leads to reduced consumption, resulting in significant prevention of cardiovascular disease and type 2 diabetes cases, along with net healthcare cost savings.

Support the timely implementation of FDA added sugar labeling on packaged foods. This policy leverages consumer choice to reduce sugar intake, which directly lowers the risk of heart disease and diabetes while saving billions in healthcare costs. The benefits are maximized when the label also encourages manufacturers to reformulate products to contain less sugar.

Bariatric surgery (specifically LRYGB, LSG, or LAGB) significantly improves metabolic syndrome, insulin resistance, and reproductive function (menstrual regularity, ovulation) in PCOS patients compared to lifestyle modifications alone.

If you have PCOS and obesity, bariatric surgery is a highly effective medical intervention that can reverse metabolic syndrome and restore fertility more effectively than diet and exercise alone. It reduces risks of diabetes, hypertension, and pregnancy complications. While surgery carries risks, they are lower than before, and pregnancy outcomes are generally safe and improved compared to pre-surgery states. Consult a specialist to determine if you are a candidate.

Averaging the middle three resting metabolic rate (RMR) measurements obtained via indirect calorimetry provides a significantly more reliable estimate of energy needs than a single measurement or averaging the initial/final measurements.

If you are measuring Resting Metabolic Rate (RMR) using indirect calorimetry, do not rely on a single reading. To get an accurate number for calculating your daily energy needs, perform serial measurements (e.g., hourly). Discard the first reading, as the body is still adapting to the equipment. Average the middle few readings (e.g., the 2nd, 3rd, and 4th) to get the most reliable estimate of your true metabolic rate.

Resistance training-induced muscle hypertrophy is regulated by a core set of 141 genes, including specific regulation of mRNA 3' and 5' untranslated regions (UTRs), which directly modulate protein synthesis and lean mass gains.

To maximize muscle growth, focus on consistent resistance training. The research suggests that individual genetic responses (specifically how your body regulates gene expression via UTRs) dictate your growth potential. While you cannot change your genes, understanding that 'responders' and 'non-responders' exist at a molecular level may help manage expectations. Consistency is key, as the molecular machinery adapts to the loading stimulus.

In older adults (aged 65-100), central adiposity measures (specifically waist/hip ratio) and midlife BMI are significant independent predictors of coronary heart disease risk, whereas general adiposity (baseline BMI) loses significance after adjusting for mediators.

For adults over 65, tracking waist circumference and hip circumference (to calculate waist/hip ratio) and recalling body mass index at age 50 provides a more accurate assessment of coronary heart disease risk than current body weight or BMI alone. If you have a higher waist-to-hip ratio or were overweight in midlife, your risk remains elevated even if your current BMI is normal.

In older women, waist/hip ratio is a significant independent predictor of ischemic stroke risk, whereas in older men, only baseline BMI (≥30 kg/m²) is a significant predictor of ischemic stroke risk.

For older adults, stroke risk assessment should be sex-specific. Women should prioritize monitoring their waist-to-hip ratio, as it is a stronger predictor of stroke than BMI. Men should focus on maintaining a BMI below 30 kg/m², as this is the most significant predictor of stroke risk in this demographic.

Higher baseline levels of food addiction, as measured by the Yale Food Addiction Scale, are associated with increased odds of both trial attrition and 12-month weight gain in behavioral weight-loss interventions.

If you struggle with intense cravings or loss of control over certain foods, standard willpower-based dieting may fail. Consider interventions that reduce exposure to triggering foods, such as meal replacements or highly structured meal plans, to bypass the need for constant decision-making.

Higher baseline self-efficacy for nutrition change and higher outcome expectations are associated with increased odds of trial attrition, suggesting that overconfidence may lead to disappointment and dropout when weight loss is slower than expected.

If you are highly confident in your ability to lose weight, be aware that unrealistic expectations can lead to dropout if progress is slow. Focus on building sustainable habits rather than rapid results to maintain long-term engagement.

Identifying as non-Hispanic white, being married or living with a partner, and having higher family encouragement are associated with lower odds of 12-month weight gain among trial completers.

If you lack strong social support at home, actively seek external accountability through group programs, friends, or coaches to replicate the support structure provided by marriage or family.

Higher circulating levels of the trans-fatty acid isomer trans/trans-18:2 (t/t-18:2) are associated with significantly increased risks of total mortality, cardiovascular disease (CVD) mortality, and total coronary heart disease (CHD).

Avoid foods containing partially hydrogenated oils, as they are the primary source of the trans fatty acid isomer t/t-18:2, which is linked to higher risks of heart disease and death. While natural sources of trans fats exist (like in some dairy/meat), this study highlights that the industrial isomer t/t-18:2 is the most harmful. For older adults, minimizing industrial trans fats is a key step for longevity.

Implementing a 20% tax on sugar-sweetened beverages (SSBs) significantly reduces SSB intake, with the magnitude of reduction being highest in low-income countries and among young adults.

For policymakers, a 20% tax on sugary drinks is a highly effective tool, especially in lower-income countries where it can reduce consumption by 15-24%. In wealthier nations, the effect is smaller (around 7-8%) and may require larger taxes or combined interventions like education campaigns to be effective for older demographics.

GLP-1 receptor agonists (GLP-1RAs) significantly improve liver enzymes (AST, ALT, GGT) and reduce fibrosis scores in patients with MAFLD and T2DM, though they are not recommended as a primary treatment for NASH histology in the absence of diabetes.

If you have type 2 diabetes and fatty liver, GLP-1 medications (like Semaglutide) can significantly improve your liver enzymes and reduce scarring markers. They are recommended by guidelines for this specific group. However, they can cause stomach issues like nausea, which leads many people to stop taking them. Discuss with your doctor if the benefits for your liver and heart outweigh the side effects.

Obesity (BMI > 30) in early-stage chronic kidney disease (CKD) causes or worsens CKD through obesity-associated nephropathy (OAN), characterized by glomerular hypertrophy, hyperfiltration, albuminuria, and focal segmental glomerulosclerosis (FSGS).

If you have a BMI over 30 and are in early stages of kidney disease, your weight is likely actively damaging your kidneys through inflammation and high blood pressure in the kidney filters. You should prioritize weight loss through lifestyle changes or medical supervision to prevent progression to advanced stages.

Person-specific characteristics (genetic, hormonal, psychosocial, and behavioral) significantly predict individual variability in weight loss response to obesity interventions, making precision medicine strategies potentially more effective than broad application of treatments.

Stop assuming a single diet or exercise plan works for everyone. Your body's unique genetics, hormones, and psychology dictate how you respond to treatment. Instead of blindly following a generic plan, look for early signs of response (like weight loss in the first few weeks) to decide whether to continue or switch strategies. If you have specific genetic conditions (like leptin deficiency), targeted medical therapies may be available, but for most, success depends on matching the intervention to your specific biological and psychological profile.

Higher baseline levels of inflammation (indicated by insulin, IL-6, adipose tissue inflammation, cortisol, and leptin) are associated with a worse weight loss response to lifestyle modification therapy.

If you have high insulin or inflammation, standard diet and exercise advice may be less effective for you. This doesn't mean you can't lose weight, but it may require more targeted approaches, such as specific dietary changes (e.g., low-carbohydrate vs. low-fat) or medications that address these specific hormonal issues. Consult a provider to check these markers.

Bariatric surgery alters food preference and hedonic response, reducing the appeal of high-calorie, high-sugar foods and increasing preference for low-fat foods, which contributes to sustained weight loss.

After surgery, your brain's reward system for food changes. You may naturally find high-sugar and high-fat foods less appealing, which helps you stick to a healthier diet. This is a biological shift, not just willpower.

Daily supplementation with a combination of nicotinamide riboside (NR) and pterostilbene (NRPT) at the recommended dose significantly reduces circulating levels of hepatic inflammation markers (ALT and GGT) and toxic lipids (ceramide 14:0) in adults with Non-Alcoholic Fatty Liver Disease (NAFLD) over 6 months, without reducing hepatic fat fraction.

If you have NAFLD, a specific combination of Nicotinamide Riboside and Pterostilbene (taken daily at the recommended dose) may help lower liver inflammation markers (ALT, GGT) and toxic lipids over 6 months. However, do not expect this supplement to reduce the actual amount of fat in your liver, as the study showed no improvement in hepatic fat fraction compared to a placebo.

Obesity is associated with high prevalence of micronutrient deficiencies (e.g., Vitamin D, Iron, B12) due to physiological changes like increased volume of distribution, sequestration in adipose tissue, and inflammation-induced malabsorption (e.g., hepcidin blocking iron).

If you have obesity, assume you may be deficient in key micronutrients like Vitamin D, Iron, and B12, regardless of how much you eat. Focus on nutrient-dense foods and discuss screening with your doctor, as standard weight loss diets can sometimes worsen these deficiencies.