Browse the evidence

A standard 12-week low-intensity behavioral weight management program (WMP1) is the next most cost-effective intervention after RYGB surgery for adults with severe obesity.

For patients with severe obesity who cannot or choose not to have surgery, a standard 12-week behavioral weight management program is the most cost-effective non-surgical option. This program involves weekly group sessions focusing on diet and physical activity advice. It offers good value for money and can be delivered at scale.

Resistance training to failure and non-failure have equivalent effects on sleep quality (subjective and actigraphic) and heart rate variability (HRV) during sleep.

You don't need to worry that training to failure will ruin your sleep. Both failure and non-failure training resulted in similar sleep quality and heart rate variability. Focus on managing your strength recovery instead.

Baseline levels of fibroblast growth factor 21 (FGF-21) significantly predict the magnitude of weight loss during the first three months of dietary intervention, whereas other inflammatory and cardiovascular biomarkers do not.

Current blood tests for inflammatory or cardiovascular proteins cannot tell you which diet (low-fat or low-carb) will work best for you. The only protein that showed predictive power for weight loss magnitude was FGF-21, but even that has limited utility for individualized advice. Focus on adherence to a sustainable dietary pattern rather than seeking a predictive blood test.

Weight loss interventions lead to significant changes in the plasma levels of 130 inflammatory and cardiovascular proteins, with most decreasing alongside BMI reduction.

Losing weight significantly alters your body's inflammatory and cardiovascular protein profile. This confirms that weight loss has systemic biological benefits beyond just size reduction, improving metabolic health markers.

Performing resistance training before high-intensity interval training (RT+HIIT) in same-day concurrent sessions attenuates lower-body power development (countermovement jump displacement, force, and power) compared to resistance-only training, whereas aerobic fitness and strength gains remain comparable.

If you train resistance and cardio on the same day and care about explosive power (like jumping or sprinting), do your weights first. Doing cardio first will blunt your power gains, even if your strength and endurance improve normally. Keep the gap between sessions to at least 3 hours if possible.

Performing high-intensity interval training (HIIT) before resistance training (HIIT+RT) does not attenuate lower-body maximal strength or lean mass gains compared to resistance-only training, making it a viable strategy for concurrent training.

If you must do cardio and weights on the same day, doing cardio first won't hurt your strength or muscle growth, provided you wait about 3 hours between sessions. You can still get strong and build muscle.

Long-term bariatric surgery (≥5 years) significantly reduces the incidence of macrovascular complications, cardiovascular events, and myocardial infarction in severely obese patients with type 2 diabetes compared to conventional medical therapy.

For severely obese individuals with Type 2 Diabetes, bariatric surgery offers significant long-term protection against heart attacks, strokes, and other cardiovascular complications compared to standard medical treatment alone. This benefit persists for at least five years post-surgery. While surgery is a major intervention, the data supports its use for reducing major cardiovascular risks in this specific population.

Semaglutide therapy significantly reduces systemic inflammation, as measured by C-reactive protein (CRP) levels, compared to placebo or other glucose-lowering drugs, regardless of whether the patient has type 2 diabetes or obesity without diabetes.

If you are taking semaglutide for diabetes or weight management, you can expect it to lower your systemic inflammation (measured by CRP). This benefit occurs whether you take the pill or the injection, and whether or not you have diabetes. This anti-inflammatory effect is likely a key reason why semaglutide reduces heart disease risk.

Protein hydrolysates may induce a more potent insulinotropic effect (higher insulin response) than intact proteins, although this does not necessarily translate to greater muscle protein synthesis.

Hydrolysates might spike your insulin more than regular protein, but this doesn't mean you build more muscle. Insulin helps inhibit muscle breakdown, but since MPS is the same, the extra insulin spike is likely unnecessary for most people.

High-carbohydrate, high-fiber diets (60-70% carbs) are effective and acceptable for managing Type 2 Diabetes in Indian populations, refuting the necessity of strict carbohydrate restriction.

Focus on your traditional Indian staples like dal, whole grains, and vegetables. Aim for 60-70% of your calories from these high-fiber carbohydrates, keep protein moderate (10-15%), and limit fats (10%). This approach is culturally acceptable and clinically effective for controlling blood sugar.

Randomizing exercise selection and repetition ranges session-by-session in resistance-trained men significantly increases intrinsic motivation compared to fixed exercise protocols, while producing equivalent gains in muscle thickness and maximal strength.

If you are a trained lifter struggling with motivation or adherence, try randomizing your exercise selection and rep ranges using an app or randomizer, keeping volume and intensity (failure) constant. This will likely boost your enjoyment and consistency without costing you any strength or muscle gains compared to sticking to a fixed routine. If your goal is purely maximal strength or hypertrophy and you enjoy your routine, you do not need to vary exercises to see results.

In resistance-trained individuals, increasing proximity-to-failure (moving from 3-RIR to 1-RIR to Failure) linearly increases acute neuromuscular fatigue and negative perceptual responses, with males exhibiting greater fatigue than females when training to failure.

If you are resistance-trained, you do not need to train to absolute failure on every set. Stopping 1-3 reps before failure (RIR) significantly reduces acute neuromuscular fatigue and negative feelings (discomfort, soreness) compared to going to failure, while likely preserving similar training stimulus. This can improve your adherence and recovery, especially if you are male, as males showed greater fatigue at failure than females.

Higher circulating levels of marine omega-3 polyunsaturated fatty acids (EPA and DHA) are associated with a significantly lower risk of total and ischemic stroke, with no increased risk of hemorrhagic stroke.

Aiming for higher blood levels of EPA and DHA (specifically an omega-3 index of 8% or higher) is associated with a lower risk of stroke. This can be achieved through dietary intake of 1-2 seafood meals per week or supplementation with approximately 1000-1600 mg/day of EPA+DHA, depending on your baseline levels.

GLP-1 analog treatment (semaglutide and liraglutide) reduces short-term appetite, decreases energy intake, and lowers preference for energy-dense foods (high-fat, sweet, and salty) during the weight loss phase, primarily through mechanisms involving delayed gastric emptying and interaction with brain reward pathways.

GLP-1 medications like semaglutide and liraglutide reduce hunger and change food preferences, particularly reducing cravings for high-fat and sweet foods, during the initial 12-18 months of treatment. This leads to significant weight loss (up to 15%). Side effects like nausea are common but can be managed by starting with lower doses and increasing slowly.

Transdermal estrogen therapy (100 µg/day) combined with 12 weeks of progressive resistance training significantly amplifies skeletal muscle mass gains (quadriceps cross-sectional area and whole-body fat-free mass) in early postmenopausal women compared to resistance training with placebo.

If you are an early postmenopausal woman struggling to build muscle despite consistent resistance training, discuss transdermal estrogen therapy with your doctor. This study suggests that adding 100 µg/day of transdermal estradiol to your routine can nearly double your muscle mass gains compared to training alone. This is not a magic bullet but a hormonal optimization that may be particularly relevant if you are in the first 5 years post-menopause.

Using a carbohydrate-to-fiber ratio of 10:1 or a combined 10:1 carb:fiber and 1:2 fiber:free sugar ratio effectively identifies carbohydrate-rich processed products with superior nutritional profiles, including lower calories, fat, and sodium, and higher protein, fiber, and micronutrients.

When choosing processed carbohydrate-rich foods like bread, cereal, or snacks, look for products that have at least 1 gram of fiber for every 10 grams of total carbohydrate. This '10:1' ratio is a practical, validated way to identify products with lower calories, less fat, and more beneficial nutrients like protein and minerals. Avoid relying solely on terms like 'whole grain' or 'multigrain,' as these can mask high sugar and calorie content.

GLP-1 receptor agonists improve liver health in patients with metabolic dysfunction-associated steatotic liver disease (MASLD) by reducing liver fat content, liver stiffness, and liver enzymes (ALT, AST).

If you have fatty liver disease (MASLD) along with diabetes or obesity, GLP-1 medications can help reduce fat in your liver, lower liver enzymes, and improve liver stiffness, potentially slowing or reversing liver damage.

Higher dietary protein intake (1.2-1.5 g/kg/day) combined with adequate calcium intake is associated with lower hip fracture risk and improved bone mineral density in older adults, whereas high protein with low calcium may increase fracture risk.

Aim for 1.2-1.5 grams of protein per kilogram of body weight daily, ensuring you also consume 1000-1200 mg of calcium. This combination protects against hip fractures and preserves muscle mass. Do not restrict protein out of fear of bone loss; instead, ensure your calcium intake is sufficient to support the protein.

High visit-to-visit body weight variability (BWV) significantly increases the risk of cardiovascular complications and all-cause mortality in patients with type 2 diabetes, independent of mean body weight or traditional risk factors.

If you have type 2 diabetes, keeping your weight stable is as important as losing it. Frequent weight cycling (yo-yo dieting) significantly increases your risk of heart attack, stroke, and death. Work with your healthcare provider to choose a weight management strategy that you can maintain long-term without significant fluctuations, rather than pursuing aggressive, unsustainable weight loss cycles.

Interrupting prolonged sitting with frequent, low-volume activity breaks (3 minutes of low-to-moderate activity every 30 minutes) significantly lowers fasting glucose and daily glycemic variability in adults with obesity, but does not improve overall glucose tolerance.

If you have obesity and sit for long periods, try breaking your sitting every 30 minutes with just 3 minutes of light activity (like walking or squats). This simple habit can lower your fasting blood sugar and reduce glucose spikes throughout the day. However, do not expect this alone to fix your overall glucose tolerance; you likely need more volume or intensity of activity for broader metabolic improvements.

A self-selected diet low in greenhouse gas emissions (CO2e) provides comparable nutrient intake to a high-emit diet and adheres to Nordic Nutrition Recommendations for most nutrients, with the exception of fiber, folate, and vitamin D.

You can lower your diet's carbon footprint without sacrificing nutrition. Focus on reducing high-emission foods like beef and increasing plant-based options like vegetables, fruits, and whole grains. This approach keeps your nutrient intake comparable to a standard diet, though you may need to pay attention to fiber, folate, and vitamin D sources as these were lower in the lowest-emission groups.

Adherence to Nordic Nutrition Recommendations is high in low-emission diets, but specific micronutrients (fiber, folate, vitamin D) remain below recommended levels regardless of emission level.

While low-emission diets are generally nutritious, you must actively ensure you meet fiber, folate, and vitamin D targets. Since these were not met even in the lowest-emission groups, consider incorporating fiber-rich plant foods, folate-rich vegetables/legumes, and fortified foods or supplements for Vitamin D, especially if you are in a region with limited sun exposure.

Among GLP-1RAs, Dulaglutide has the lowest risk of causing intolerable gastrointestinal adverse reactions, while Semaglutide and Liraglutide have the highest risk.

If you are experiencing intolerable gastrointestinal side effects on one GLP-1RA (like Semaglutide or Liraglutide), switching to Dulaglutide may reduce these side effects, as it has the lowest risk of intolerable GI reactions among the studied agents.

Lipase inhibitors (orlistat and cetilistat) reduce weight by inhibiting fat absorption, but are associated with gastrointestinal side effects and are less effective in patients with diabetes.

Orlistat is a daily pill that blocks fat absorption. It is taken with meals containing fat. It can cause gastrointestinal side effects like oily stools. It is not effective for patients with diabetes.