Browse the evidence

Gut microbiota composition influences the efficacy of metabolic treatments like bariatric surgery and metformin, and contributes to vagal desensitization in obesity.

If you are on metformin or had bariatric surgery, your gut bacteria matter. A diet that supports a healthy microbiome can enhance the effectiveness of these treatments. Conversely, a poor diet may contribute to 'vagal desensitization,' making weight loss harder.

Obesity is associated with gut dysbiosis characterized by decreased microbial diversity and an increased Firmicutes/Bacteroidetes ratio, which contributes to obesity through disrupted energy homeostasis, lipid synthesis, and chronic inflammation.

Your gut bacteria play a significant role in how your body handles energy and stores fat. While diet and exercise are crucial, the types of bacteria in your gut can influence your risk of obesity through mechanisms like energy extraction and inflammation. Maintaining gut health through a diverse diet may support metabolic health, but it is not a standalone cure for obesity.

Obesity and metabolic disorders are associated with specific alterations in gut microbiota composition, including enrichment of Proteobacteria and depletion of Faecalibacterium, Akkermansia, and Alistipes, with significant geographic variation in taxa like Prevotella and Ruminococcus.

Focus on dietary patterns that support a diverse microbiome rather than seeking specific 'obesity bacteria' supplements. The link between gut health and obesity is real but complex and varies by geography. Probiotics may have small effects, but they are not a substitute for foundational lifestyle changes.

Calorie restriction (15-30% reduction) inhibits tumor growth and enhances antitumor immunity by reducing IGF-1 signaling, lowering glucose levels, and remodeling the tumor microenvironment to increase CD8+ T cells while decreasing immunosuppressive MDSCs and Tregs.

If you have cancer, discuss with your oncologist whether a supervised calorie restriction of 15-30% might be appropriate as an adjunct to standard therapy. It is not a cure, but it may help improve the effectiveness of your treatment by altering your body's metabolism and immune response.

Ketogenic diets and fasting-mimicking diets may enhance the efficacy of cancer treatments by altering tumor metabolism and immune response, though mechanisms remain largely unexplored.

Ask your oncologist if a ketogenic or fasting-mimicking diet could be a safe adjunct to your cancer treatment. These diets may help your body respond better to therapy, but they are not cures and require careful monitoring.

DJB implantation is associated with a high rate of adverse events (13.2% early extraction) and serious complications, including liver abscesses and bleeding.

The DJB device carries a significant risk of complications, with 13.2% of patients requiring early removal due to adverse events like bleeding or liver abscesses. Patients must be aware of these risks before proceeding.

Acute exposure to high molecular weight advanced glycation end products (HMW-AGEs) impairs endothelium-dependent aortic relaxation.

Consuming foods high in advanced glycation end products (AGEs) can acutely harm blood vessel function. Avoiding highly processed, high-heat cooked foods may help maintain vascular health.

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.

High-salt diets can enhance antitumor immunity in melanoma and lung cancer by promoting the differentiation of M1-like macrophages and increasing the infiltration and function of CD8+ T cells.

For patients with melanoma or lung cancer, high-salt intake might boost immune response, but this is a complex trade-off. Do not increase salt intake without consulting your oncologist, as it may not be suitable for everyone, especially those with heart conditions.

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.

A 3-month pre-contest energy-restricted diet combined with an 8-week resistance training taper results in significant body mass loss (10.3%) but preserves or transiently increases maximal strength (isometric knee extension) prior to competition.

If you are cutting weight for a competition, expect your strength to fluctuate. In this case, strength peaked early in the cut and declined as the event approached, but returned to baseline after the event. Focus on maintaining protein intake (1.9-2.2 g/kg) and using a taper (reducing volume) in the final 10 days to manage fatigue while preserving strength.

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.

Strict avoidance of trans-fats, hydrogenated/oxidized fats, adulterated oils, emulsifiers, glutamatergic flavor enhancers, and non-sugar sweeteners significantly improves blood pressure control and reduces antihypertensive drug requirements in patients with essential hypertension.

To improve blood pressure and reduce medication needs, focus on eliminating specific 'toxic' dietary components rather than just counting calories. Strictly avoid trans-fats, hydrogenated oils, and heavily processed oils. Be cautious with artificial sweeteners and flavor enhancers (like MSG); try eliminating them for a few weeks to see if your blood pressure improves, then reintroduce them one by one to check for personal intolerance. Prioritize cold-pressed, unheated oils and whole foods. This approach works best when combined with your current blood pressure medications until your doctor advises otherwise.

Consumption of a proprietary Medium Chain Triglyceride (MCT) complex for seven days improves self-reported mental focus and perceived energy in golfers without increasing physiological arousal or energy expenditure.

If you play golf and struggle with focus, try a proprietary MCT supplement taken once daily for a week. This may improve your mental focus and perceived energy without making you feel physically more tired or increasing your calorie burn. Note that the specific ingredients are not disclosed, so you must trust the brand's formulation.

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.

Supplementation with whey protein, creatine HCl, and glutamine combined with undulating resistance training improves strength and muscle mass gains in athletes, even in those with lower genetic predisposition for strength (low TGS), compared to non-supplemented athletes with higher genetic predisposition.

If you are an athlete looking to maximize strength and muscle, combining resistance training with specific supplements (whey protein, creatine HCl, glutamine) may yield better results than training alone, even if you don't have 'strength genes'. Ensure you take whey protein post-workout, creatine pre-workout, and split glutamine doses morning and night.

Whey protein supplementation combined with resistance exercise training increases skeletal muscle mass and handgrip strength in older adults with sarcopenia compared to resistance exercise alone, although the effect sizes are small and may not exceed the minimally important clinical difference.

If you are an older adult with sarcopenia, adding whey protein to your resistance training routine can help you gain a small amount of muscle and grip strength. However, do not expect dramatic changes; the benefits are modest and may not translate to major functional improvements. Consistency with both exercise and protein intake is key.

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.