Browse the evidence

A multidisciplinary care model involving plastic surgeons, bariatric specialists, dieticians, and mental health providers is essential for optimizing safety and outcomes in body contouring surgery for massive weight loss patients.

If you are considering body contouring after significant weight loss, ensure your care team includes not just a surgeon, but also a dietitian to check for nutrient deficiencies, a mental health professional to manage expectations, and a primary care doctor to manage conditions like diabetes. This coordinated approach minimizes complications and improves long-term satisfaction.

Combining obesity management medications (OMM) with metabolic bariatric surgery (MBS) or endoscopic procedures is an inevitable and necessary component of future personalized obesity care, though optimal protocols are currently undefined.

Future obesity care will likely involve combining medications (like GLP-1s) with surgery or endoscopy. This combination is becoming standard to manage weight regain or suboptimal responses, though specific dosing and timing protocols are still being researched.

Solo biofragmentable magnetic duodenoileostomy (MagDI) creates a partial intestinal bypass that significantly reduces body weight and improves type 2 diabetes markers in patients with mild obesity (BMI 30-35).

This paper describes a new, minimally invasive surgical option for people with mild obesity (BMI 30-35) and type 2 diabetes. Instead of removing part of the stomach, doctors use magnets to connect the upper small intestine (duodenum) to the lower small intestine (ileum). This creates a partial bypass that helps you lose weight and control blood sugar without major surgery or permanent implants. The magnets dissolve and pass naturally after about 3 weeks. While promising, this is a new procedure with limited long-term data, so it should be considered carefully with a specialist.

Commercial protein supplements frequently make unauthorized health claims (e.g., 'post-workout recovery', 'muscle growth') that are not supported by EFSA regulations, whereas only specific claims regarding muscle mass increase/maintenance and bone maintenance are legally authorized.

When buying protein supplements in Europe, ignore marketing buzzwords like 'fast recovery' or 'instant growth' on the label. Legally, these are unauthorized. Look for the specific, EFSA-approved phrase: 'Protein contributes to muscle mass increase' or 'maintenance of muscle mass'. If a product claims 'recovery' without this specific phrasing, it is non-compliant with EU regulations.

Biomechanically calculated repair (BCR) using GRIP/CRIP concepts significantly reduces hernia recurrence rates compared to conventional repair techniques.

For complex hernias, ask if your surgeon uses biomechanical planning (GRIP/CRIP). This method tests how your abdominal wall handles daily stress before surgery, leading to a repair that is much less likely to fail (recurrence) compared to standard techniques. It may require a specialized center, but the long-term success rate is significantly higher.

Botulinum toxin A (BTA) injections and Progressive Preoperative Pneumoperitoneum (PPP) are effective mechanical optimization strategies for loss-of-domain hernias, reducing fascial tension and enabling primary closure.

If you have a very large hernia where the organs have slipped out of the abdominal cavity for a long time, standard surgery might be too risky. Your surgeon might recommend Botox injections to relax your abdominal muscles or a process called PPP (pumping air into your abdomen) to stretch your muscles before surgery. This makes it possible to close the hernia without major cutting, reducing recovery time and complications.

Protein supplementation combined with strength and conditioning training significantly increases muscular strength in athletes, whereas HMB, creatine, and vitamin D do not.

If your goal is to get stronger, ensure you are consuming enough protein alongside your strength training. This paper suggests protein is the most effective supplement for this outcome, while creatine, HMB, and vitamin D did not show significant strength benefits in this specific analysis of trained athletes.

Personalized nutrition improves gut microbiome diversity and richness in prediabetics compared to baseline, though the effect on body weight is inconsistent and dependent on study quality.

Personalized nutrition may improve gut health (microbiome diversity) in prediabetics. However, its effect on body weight is not consistent and may depend on the quality of the study or individual response.

Concurrent long-duration static stretching (1 hour, 6 days/week) and resistance training induces significant muscle thickness hypertrophy and strength gains in highly trained bodybuilders, suggesting the modalities are complementary rather than redundant.

If you are an experienced bodybuilder looking to maximize calf growth, adding 1 hour of daily static stretching to your existing resistance training routine may yield greater muscle thickness gains than resistance training alone. Use an orthotic device to achieve high intensity (8/10 pain) during these sessions. Note that this protocol is demanding and may not be necessary or effective for untrained individuals.

Standalone digital health exercise interventions provide no significant benefit on core sarcopenia outcomes (muscle mass, physical performance) in older adults, whereas combined digital interventions (exercise plus nutrition) significantly improve muscle strength and quality of life.

If you are an older adult with sarcopenia, a digital exercise app alone is unlikely to significantly improve your muscle strength or physical function. To see real benefits, you need a program that combines digital exercise guidance with nutritional support. Look for comprehensive digital interventions that include both components.

Individualized strength-oriented fitness programs significantly improve strength preparedness (maximal strength, endurance, speed-strength) in women of early mature age (21-30 years) even under prolonged war-related environmental stress.

If you are living in a high-stress or crisis environment, do not abandon strength training. Instead, individualize your program to your current capacity and stress levels. Focus on gradual progression of resistance and volume. This approach can maintain and even improve your strength and functional stability despite external chaos.

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.

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.

High-volume static stretching is a viable therapeutic alternative or supplement for counteracting immobilization-induced muscle atrophy in patients who are bedridden, post-surgery, or have mobility restrictions.

If you are recovering from surgery or an injury and cannot lift weights, use a stretching device or manual stretching for 30 minutes to 2 hours daily. This can help prevent muscle loss during immobilization. Consult your doctor before starting.

Proximity to failure (4-6 RIR vs 1-3 RIR vs 0 RIR) does not significantly affect muscle hypertrophy (muscle thickness) in trained men over an 8-week period.

For muscle growth, it does not matter much whether you train to failure or stop with 1-3 reps left. Both approaches can yield similar hypertrophy. Focus on consistency and progressive overload rather than chasing failure on every set.

Modifying the physical structure of beef (minced vs. steak) while keeping nutrient composition identical does not significantly alter muscle protein synthesis (MPS) rates, but it does significantly improve whole-body net protein balance by enhancing digestion and absorption kinetics.

If you are eating enough protein (around 26g+ per meal) and engaging in resistance training, the physical form of your meat (minced vs. steak) likely does not change how much muscle you build directly. However, minced meat may be easier to digest and absorb, leading to better overall protein retention in the body, which might be beneficial for older adults or those with chewing difficulties.

Phytotherapeutic agents (e.g., Green Tea, Nigella Sativa, Bofu Tsusho San) produce statistically significant but clinically less relevant weight loss compared to modern AOMs.

Herbal supplements like Green Tea or Black Seed may help with modest weight loss, but they are not as effective as prescription medications like Semaglutide or Tirzepatide. Manage your expectations accordingly.

Metabolic and bariatric surgery (MBS) improves depressive, anxiety, and non-normative eating symptoms, as well as attention, compared to nonsurgical controls, though evidence certainty is low to very low.

If you have obesity and struggle with depression, anxiety, or disordered eating, metabolic and bariatric surgery (MBS) may help improve these symptoms more than nonsurgical treatments. However, the evidence is not yet high-quality, and you should be aware that MBS might slightly increase the risk of substance use disorders or suicide in the long term (>2 years). Regular mental health monitoring is essential after surgery.

Human observational studies on MSG and obesity show inconsistent results, with some finding positive associations and others finding no association or inverse associations, largely due to measurement errors and confounding factors.

Human studies on MSG and weight are mixed. While animal studies suggest risks, human data is not conclusive. Reducing intake of processed foods with hidden MSG is a low-risk strategy for overall health.

South Asian ethnicity is predisposed to 'thin-fat' obesity (normal weight obesity), leading to higher risks of diabetes, hypertension, and dyslipidemia at lower BMIs.

If you are South Asian, your risk for diabetes and heart disease starts at a lower weight than other ethnicities. Even if your BMI is normal, you might have 'thin-fat' obesity. Get regular check-ups for blood sugar, blood pressure, and cholesterol, and focus on building muscle and staying active.

Creatine supplementation trends toward increasing lean muscle mass in prostate cancer patients undergoing ADT.

Creatine supplementation may help preserve lean muscle mass in prostate cancer patients on hormone therapy, though the evidence is not yet definitive. It is worth discussing with your healthcare provider as a potential supportive measure.

Carnivore and animal-based diets do not consistently improve athletic performance and may impair high-intensity exercise capacity due to reduced muscle glycogen and constrained metabolic flexibility.

Do not switch to a carnivore or animal-based diet expecting better performance, especially if your sport involves sprinting, lifting, or high-intensity intervals. These diets reduce muscle glycogen and make it harder to produce energy quickly. While you might lose weight or feel less bloated, your high-intensity performance will likely suffer. Stick to established sports nutrition guidelines that prioritize carbohydrate availability for intense training.