Browse the evidence

Strict exercise technique (minimizing involvement of ancillary muscle groups) is recommended over non-strict technique (using momentum or body sway) to ensure the target muscle receives the primary hypertrophic stimulus and adheres to recommended tempo and ROM.

Aim for strict form by minimizing body sway and momentum, especially if the assisting muscles are not being effectively trained (e.g., hip extensors during bicep curls). This ensures the target muscle handles the load and adheres to the recommended 2-8 second tempo and long muscle length ROM. However, if assisting muscles are also at long muscle lengths, some involvement may be acceptable.

Combining GLP-1/GIP receptor agonists (semaglutide/tirzepatide) with structured resistance training (3-5 days/week) and high protein intake (1.6-2.3 g/kg fat-free mass/day) can preserve or increase lean soft tissue (LST) during significant weight loss, contrary to typical clinical trial outcomes.

If you are taking semaglutide or tirzepatide, do not rely on the medication alone to protect your muscles. You must lift weights 3-5 times a week and eat enough protein (aim for 1.6-2.3 grams per kilogram of your lean body mass). Without this, you risk losing significant muscle along with fat.

Combination anti-obesity medication regimens including GLP-1 receptor agonists can achieve total body weight loss (approx. 32.5%) comparable to metabolic/bariatric surgery in patients with severe obesity.

If you have severe obesity and have not lost significant weight with standard medications or lifestyle changes alone, ask your doctor about combination therapy. Adding a GLP-1 agonist (like semaglutide) to other approved weight-loss drugs may produce results similar to bariatric surgery. This approach targets multiple biological pathways (hunger, satiety, metabolism) simultaneously, which may be necessary for severe cases.

Longer-muscle length resistance training (LML-RT) may lead to greater increases in fascicle length (longitudinal hypertrophy) compared to shorter-muscle length resistance training (SML-RT), though evidence is mixed and methodologically limited.

Training at longer muscle lengths may help increase the length of your muscle fibers (fascicles), which can contribute to overall muscle size. However, current measurement methods are imperfect, so prioritize long-length training for overall hypertrophy rather than expecting specific longitudinal gains to be easily quantified.

The Adaptive Ketogenic–Mediterranean Protocol (AKMP) utilizes dynamic, biomarker-guided adjustments to metabolic adaptation (adaptive thermogenesis) to sustain weight loss, whereas GLP-1 agonists fail to counteract the resulting decline in energy expenditure.

If you are using a ketogenic or low-carb approach and hit a weight loss plateau, do not just restrict calories further. Monitor your metabolic markers (like ketones and blood sugar). If you stall, the protocol suggests dynamically adjusting your macronutrients—specifically increasing protein and adjusting fats—to leverage the metabolic advantage of ketosis and counteract the natural drop in energy expenditure that occurs during weight loss.

Supplementation with β-hydroxy β-methylbutyrate (HMB) may preserve fat-free mass and increase muscle strength in individuals undergoing weight reduction, although robust evidence in obesity patients is lacking.

HMB might help preserve muscle during weight loss, especially in older adults or those losing weight quickly. However, evidence is limited for obesity patients. Prioritize protein and exercise first; consider HMB as a potential add-on if affordable and after consulting a healthcare provider.

Time-restricted eating (TRE), lower meal frequency, and earlier caloric distribution result in statistically significant but small weight loss compared to control groups when implemented for 12 weeks or longer.

If you want to try meal timing for weight loss, expect a modest result (around 1-2 kg loss over 12+ weeks) rather than a dramatic transformation. The key is likely that restricting your eating window naturally reduces the amount of food you consume, not a magical metabolic shift. Focus on consistency for at least 12 weeks, and do not expect it to replace the fundamental need for a caloric deficit.

Intermittent fasting (5:2 protocol) is a viable weight loss strategy for night shift workers, with the hypothesis that aligning fasting days with night shifts (5:2N) may improve insulin resistance compared to continuous energy restriction.

If you work night shifts, try fasting for 2 days a week. You can choose which days to fast, so pick the days that include your night shifts. On those days, eat very little (about 2100-2500 kJ). On the other 5 days, eat normally but don't overeat to make up for the fast days. This approach might help manage your weight and blood sugar better than just cutting calories every day.

Exercise is an effective treatment for major depressive disorder, with walking/jogging, yoga, and strength training showing moderate to large reductions in symptoms compared to active controls.

Exercise is a valid, evidence-based treatment for depression, comparable to medication and therapy. For best results, choose modalities like walking, jogging, yoga, or strength training. While vigorous intensity yields stronger effects, even light activity provides clinically meaningful benefits. Prioritize modalities you find tolerable, such as yoga or strength training, to ensure adherence.

Supervised exercise interventions produce larger reductions in depressive symptoms than unsupervised interventions.

To maximize mental health benefits, seek out supervised exercise programs. The data shows supervised exercise has large effects, while unsupervised exercise has smaller effects. If supervision is not possible, start with any exercise, but recognize that professional guidance significantly boosts efficacy.

Engaging in muscle-strengthening activities (e.g., resistance training) for 30-60 minutes per week is associated with a 10-20% lower risk of all-cause mortality, cardiovascular disease, and total cancer compared to no muscle-strengthening activity.

To lower your risk of death and major diseases, aim for 30-60 minutes of muscle-strengthening activities (like lifting weights or bodyweight exercises) per week. You don't need to do it all at once; breaking it into 2-3 sessions is effective. This benefit exists even if you already do aerobic exercise like walking or running.

Combined muscle-strengthening and aerobic activities provide greater reductions in all-cause, cardiovascular, and total cancer mortality than either activity alone or neither.

For the best protection against death and major diseases, combine muscle-strengthening exercises with aerobic exercise. This combination offers significantly greater benefits (40% lower all-cause mortality) than doing either one alone.

Traditional Chinese Medicine (TCM) interventions, including acupuncture, herbal medicine, and dietary therapy, may help manage obesity and diabetes by regulating gut microbiota, reducing inflammation, and improving insulin sensitivity.

If you are managing obesity or diabetes, TCM modalities like acupuncture, specific herbal formulas (e.g., Ginseng, Cinnamon), and dietary adjustments may offer supportive benefits by improving insulin sensitivity and gut health. However, these should not replace standard lifestyle changes or prescribed medications without consulting your doctor, as the evidence is still evolving.

Natural compounds, specifically oligomeric procyanidins from apple polyphenol extract and tetrahydrofuran from nutmeg, inhibit pancreatic lipase activity in vitro and in animal models, potentially offering safer alternatives to synthetic inhibitors.

Some natural extracts, like those from apples (procyanidins) and nutmeg, show promise in blocking fat-digesting enzymes in lab tests. However, they are not yet proven to be effective or safe for weight loss in humans compared to established treatments. Do not rely on them as a primary weight loss strategy without medical guidance.

Low-carbohydrate diet scores are not associated with a reduced risk of type 2 diabetes.

Following a low-carbohydrate diet does not appear to offer a specific advantage in reducing the risk of type 2 diabetes compared to moderate-carbohydrate diets, according to this meta-analysis. Focus on overall dietary quality and maintaining a healthy weight.

Soy protein supplementation has an inconsistent effect on testosterone and cortisol levels, and more research is required to determine its impact on anabolic hormones.

Don't worry about soy protein affecting your hormones. The research shows inconsistent effects on testosterone and cortisol, with no clear evidence of negative impacts. You can consume soy protein without fear of hormonal disruption.

Newer GLP-1/GIP receptor agonists (semaglutide, tirzepatide) are expected to provide superior post-operative weight loss compared to prior GLP-1 RAs, despite a lack of specific post-surgical clinical trials.

Semaglutide and tirzepatide show impressive weight loss in non-surgical patients, but there is currently no data on their effectiveness specifically after bariatric surgery. Liraglutide and topiramate remain the best-supported options for post-surgical weight regain.

GLP-1 receptor agonists and GIP may influence cardiac lipid metabolism by modulating LPL activity, potentially offering cardioprotection, though the specific effect on cardiac LPL remains unclear.

GLP-1 and GIP drugs help with weight and glucose, but they may also directly affect how the heart processes fat. The exact impact on the heart is still being studied, but it may offer additional protection beyond weight loss.

Semaglutide treatment (up to 2.4 mg weekly) significantly reduces body weight, fat mass, and emotional eating behaviors in patients with hypothalamic obesity resulting from craniopharyngioma.

For patients with hypothalamic obesity due to brain tumors or surgery, semaglutide (up to 2.4 mg/week) combined with dietary counseling can significantly reduce weight and emotional eating, even when other treatments fail. It works by targeting brain circuits beyond the damaged hypothalamus.

Tirzepatide use in non-diabetic obese patients can induce severe ketoacidosis, primarily through starvation ketosis driven by gastrointestinal side effects and reduced caloric intake, rather than diabetic mechanisms.

If you are using tirzepatide for weight loss, do not buy it over the counter without medical oversight. Be aware that severe nausea, vomiting, or diarrhea combined with low food intake can lead to dangerous acid buildup (ketoacidosis), even if you do not have diabetes. Seek immediate medical attention if you experience abdominal pain, vomiting, and rapid breathing.

Carbohydrate manipulation (loading) increases muscle size in physique athletes primarily through intramuscular glycogen supercompensation and associated water binding, but this strategy lacks experimental validation for aesthetic performance and carries risks of gastrointestinal distress and subcutaneous water retention.

If you are a physique athlete peaking for competition, do not blindly copy endurance athlete carb-loading protocols. Your body may not handle the same loads, leading to 'spilling over' (subcutaneous water) and bloating. Instead, experiment with moderate carbohydrate loads (3-6 g/kg) during training camp to see how your body responds. Minimize the number of variables you change at once (e.g., don't change carbs, water, and sodium simultaneously) to reduce psychological stress and make it easier to identify what works for your specific physiology.

Tirzepatide use is associated with a risk of idiosyncratic acute liver injury, characterized by severe hepatotoxicity and coagulopathy, which resolves upon discontinuation of the drug.

If you are using tirzepatide for weight loss, do not skip liver function tests. While liver injury is rare, it can be severe and rapid. Report any persistent abdominal pain, vomiting, or yellowing of skin/eyes immediately. The drug should be stopped if liver enzymes rise significantly.

HIIT does not significantly improve body mass or BMI in patients with diabesity compared to standard treatment.

Do not expect HIIT to drastically change your weight or BMI if you have diabesity. The primary benefit of this training style for your condition is metabolic (blood sugar and lipids), not weight loss. Manage your expectations regarding the scale.

GLP1:GIP:Gcg triple agonists (SAR441255) show potential for weight loss and neurological benefits, including improved memory in mouse models of TBI and Alzheimer's disease.

GLP1:GIP:Gcg triple agonists like SAR441255 show potential for weight loss and neurological benefits, including improved memory in animal models of TBI and Alzheimer's disease. However, human data is preliminary, and glycemic benefits may be inferior to dual agonists. These therapies are in early development.