Browse the evidence

Sustained weight loss of 15-20% prevents type 2 diabetes in obese individuals, reducing the 2-year incidence from 6.3% to 0.2%.

Losing 15-20% of your body weight and keeping it off is the single most effective way to prevent type 2 diabetes, reducing your risk by over 95% in the short term and 80% in the long term. Focus on sustainable lifestyle changes rather than quick fixes.

Obesity is a major independent risk factor for hypertension, with approximately one-third of hypertension prevalence in prevalent populations potentially attributable to obesity.

Obesity is a primary driver of high blood pressure in the general population. Addressing excess body weight is not just about aesthetics but is a critical medical intervention for preventing or managing hypertension, potentially eliminating the condition in up to one-third of cases.

Low Energy Availability (LEA) causes Relative Energy Deficiency in Sport (RED-S), leading to impaired performance, poor bone health, and increased injury risk in both male and female athletes.

Ensure your daily food intake covers both your training energy expenditure and your body's basic health needs. If you are losing weight unintentionally, feeling fatigued, or getting injured often, you may have Low Energy Availability. Consult a sports dietitian to increase energy availability.

Weight loss of 5-10% significantly improves reproductive outcomes (ovulation, menstrual regularity) and metabolic markers (insulin resistance, lipids) in women with PCOS, regardless of the specific dietary composition used to achieve the weight loss.

Aim for a 5-10% reduction in body weight through a moderate energy deficit (500-750 kcal/day). You do not need to follow a specific restrictive diet (like low-carb or low-fat) to see benefits; any dietary approach that helps you achieve this weight loss will improve insulin resistance, lipids, and reproductive health.

Exercise is highly recommended for osteoarthritis patients, as it reduces pain, improves quality of life, and improves physical function, reversing previous guidelines that discouraged exercise.

If you have osteoarthritis, exercise is one of the best treatments. It reduces pain and helps you function better. Choose low-impact activities like swimming or cycling. If you feel pain during exercise, stop. If you have pain the next day, reduce the amount by half and build up slowly.

Vigorous intensity aerobic exercise produces superior improvements in cardiorespiratory fitness (peak VO2) compared to low or moderate intensity exercise in Type II Diabetes patients.

If your doctor clears you for it, aim for vigorous intensity aerobic exercise. It provides significantly greater improvements in heart and lung fitness (peak VO2) than moderate or low intensity exercise. If you cannot tolerate vigorous intensity, moderate exercise still offers health benefits.

The additional energy requirement for exclusive breastfeeding is approximately 670 kcal/day, but allowing for gradual maternal weight loss reduces the net dietary increment needed to approximately 500 kcal/day.

To support milk production, aim to eat an extra 500 to 670 calories per day compared to your pre-pregnancy needs. This accounts for the energy in the milk and the energy your body provides by slowly losing pregnancy weight.

An energy-reduced Mediterranean diet combined with behavioral support and physical activity promotes significantly greater adherence and improvement in cardiovascular risk factors compared to an energy-unrestricted Mediterranean diet in patients with metabolic syndrome.

For individuals with metabolic syndrome, simply following a Mediterranean diet is not enough for optimal metabolic health; you must actively reduce caloric intake (by about 600 calories a day) and increase physical activity. The key to success is not just the food list, but the behavioral support and structured guidance (like monthly coaching) that helps you stick to the reduced calorie target.

Creatine monohydrate (CM) is the most effective, safe, and well-studied form of creatine for increasing muscle creatine/phosphocreatine and enhancing anaerobic exercise capacity, with no newer forms demonstrating superior efficacy or safety.

Stick with creatine monohydrate. It is the most researched form, proven to increase muscle creatine by 15-40% and improve strength and power. Newer, more expensive forms have not been shown to be better.

Combined diet and physical activity interventions significantly decrease the risk of Type 2 Diabetes in high-risk populations (e.g., prediabetes, obesity, impaired fasting glucose).

If you are at high risk for Type 2 Diabetes (e.g., prediabetes, obesity), combine dietary changes with physical activity. Focus on reducing calories/carbohydrates and engaging in supervised aerobic or resistance exercise. This combined approach is highly effective at preventing the onset of Type 2 Diabetes.

Overweight/obesity and physical inactivity are each responsible for nearly 1 in 10 deaths in the US, making them major contributors to preventable mortality.

Maintain a healthy weight and stay physically active. These two factors contribute to nearly 20% of all adult deaths combined. Addressing them through diet and exercise offers significant mortality benefits.

Sustained positive energy balance (energy intake exceeding energy expenditure) is the primary driver of obesity and weight gain.

To lose weight, you must consume fewer calories than you burn. While the quality of your diet (e.g., Mediterranean patterns, limiting sugary drinks) helps manage hunger and health, the fundamental requirement for weight loss is a sustained negative energy balance.

The thermic effect of food (TEF) varies significantly by nutrient type, with proteins inducing 20-30% energy expenditure, carbohydrates 5-10%, and fats 0-3%.

To maximize the energy cost of digestion, prioritize protein in your diet. Your body burns significantly more energy processing protein (20-30%) compared to fats (0-3%) or carbs (5-10%). This doesn't replace the need for a caloric deficit, but it adds a small metabolic advantage to higher-protein diets.

Visceral Adipose Tissue (VAT) and Epicardial Adipose Tissue (EAT) are stronger predictors of incident HFpEF and mortality than Body Mass Index (BMI) alone.

Don't just look at your weight. For heart failure risk, where you store fat matters more. High belly fat (VAT) and heart-adjacent fat (EAT) are major risks, even if your overall weight seems okay. Imaging can help assess this risk.

Overweight/obesity and physical inactivity are each responsible for nearly 1 in 10 deaths in the US, with obesity causing 216,000 and inactivity 191,000 deaths.

Maintain a healthy body weight and stay physically active. These two factors are responsible for nearly 20% of all adult deaths combined, making them critical targets for health improvement.

Adult obesity and overweight significantly increase the odds of PCOS, with adolescents showing even higher odds than adults for the same degree of adiposity.

Maintaining a healthy weight in adulthood reduces PCOS risk, but adolescent weight is even more critical. Adolescents with overweight or obesity face higher odds of developing PCOS than adults with the same conditions. Prioritize healthy weight management during teenage years.

Obesity results from a complex interaction between environmental factors (e.g., ultra-processed foods, reduced physical activity) and genetic susceptibility, rather than environmental factors alone.

Recognize that your genetics may predispose you to weight gain, but this does not mean you are powerless. Understanding this interaction can help you adopt more effective, personalized strategies for managing your weight, such as working with healthcare providers on targeted interventions.

Obesity is a significant risk factor for respiratory diseases, including obstructive sleep apnea (OSA), obesity hypoventilation syndrome (OHS), and asthma, primarily due to mechanical effects on lung volume and airway collapse.

If you have obesity, you are at higher risk for sleep apnea and breathing problems. Excess weight can narrow your airways and reduce lung capacity. Losing weight can help improve breathing and reduce the severity of conditions like asthma and sleep apnea.

Visceral adipose tissue accumulation is a primary risk factor for cardiometabolic disease, whereas subcutaneous fat is metabolically neutral or healthy.

Not all fat is created equal. Visceral fat (around your organs) is dangerous and increases your risk of diabetes and heart disease. Subcutaneous fat (under your skin) is less harmful. Focus on reducing visceral fat through diet and exercise, as this has the biggest impact on your metabolic health.

Bariatric surgery (e.g., Roux-en-Y gastric bypass, sleeve gastrectomy) is an effective treatment for obesity and T2DM, capable of inducing remission of diabetes through both weight-loss-dependent and weight-loss-independent mechanisms.

Bariatric surgery is a powerful tool for treating obesity and Type 2 Diabetes. It can lead to diabetes remission (normal blood sugar without meds) through both weight loss and hormonal changes. It is invasive and carries risks like nutrient deficiencies, so it requires lifelong medical monitoring.

An intensive lifestyle intervention (ILI) combining caloric restriction, structured meal replacements, and increased physical activity produces significant initial weight loss and modest long-term maintenance in adults with type 2 diabetes, but does not reduce cardiovascular morbidity or mortality compared to standard education.

For adults with type 2 diabetes, an intensive lifestyle program focusing on moderate caloric restriction (1200-1800 kcal), structured meal replacements (initially 2 meals/day), and 175 minutes of weekly moderate activity can achieve significant weight loss and improve metabolic markers like A1C and lipids. However, do not prioritize weight loss over glucose management or quality of life. Expect some weight regain after the first year, but maintain the focus on behavioral adherence and metabolic health, as initial losses provide long-term benefits even if full maintenance is difficult.

Weight loss of >10% body weight is required to resolve NASH and regress fibrosis, but this is rarely achieved in routine clinical settings.

Aim for >10% weight loss to potentially reverse NASH and fibrosis, but recognize this is difficult. If you cannot achieve this, focus on a Mediterranean diet to improve liver health and insulin sensitivity even without significant weight loss.

Visceral Adipose Tissue (VAT) and ectopic fat deposition are causal drivers of cardiometabolic disease, whereas subcutaneous fat (specifically gluteofemoral adipose tissue, GFAT) is protective, independent of total body weight.

Focus on preserving subcutaneous fat storage capacity (especially in hips/thighs) and reducing visceral/abdominal fat. This is achieved through diet quality and physical activity, not just weight loss. If you have a 'skinny fat' phenotype (normal weight but high visceral fat), your risk is high. If you have a 'healthy obese' phenotype (high weight but low visceral fat and good metabolism), your risk may be lower than expected.

Lifestyle interventions (diet/exercise) are the cornerstone of obesity treatment but are rarely sufficient for long-term weight maintenance due to metabolic adaptations.

Lose weight through diet and exercise, but expect your body to fight back. Your metabolism will slow down, and hunger hormones will rise. To keep the weight off, you likely need medical support (medication or surgery) in addition to lifestyle changes.