Browse the evidence

Higher baseline expression of Cardiotrophin-1 (CT-1) in subcutaneous abdominal adipose tissue (scABD) protects men from the decline in insulin sensitivity typically caused by sustained overfeeding.

In lean men, higher baseline levels of the adipokine CT-1 in abdominal fat are associated with better preservation of insulin sensitivity during periods of overeating. This suggests that individual differences in adipose tissue biology may protect against diet-induced metabolic decline.

Short-term creatine supplementation (20g/day for 7 days) does not improve lower-limb muscle endurance or total work volume following an acute bout of aerobic exercise in trained young men.

If you are a trained male eating a high-protein diet, taking 20g of creatine daily for a week will not help you maintain leg strength after a hard cardio session. You likely do not need creatine for this specific purpose if your diet is already adequate.

An acute increase in fibroblast growth factor 21 (FGF21) in response to low-protein overfeeding serves as a biomarker identifying individuals with a 'thrifty' metabolism who are susceptible to weight gain.

If you struggle with weight gain despite similar efforts to others, your body's hormonal response (specifically FGF21) to certain dietary stresses might be the cause. This isn't about willpower; it's a physiological 'thrifty' phenotype. Future testing may allow you to identify this susceptibility early, shifting focus from generic advice to targeted prevention.

Integrase Strand Transfer Inhibitor (INSTI) use was associated with a lower risk of progression from prediabetes to diabetes compared to Protease Inhibitor (PI)-based ART in a specific subset of participants, contrasting with some other observational studies.

This paper's finding that INSTIs might have a lower diabetes risk than PIs in a small group is not definitive. Do not change your medication based on this alone. Focus on the proven risk factors: manage your weight, waist circumference, and triglycerides through lifestyle changes, as these have a stronger and more consistent link to diabetes progression.

Insulin-lowering dietary strategies (calorie restriction, ketogenic/low-carbohydrate diets, and intermittent fasting) reduce systemic insulin and IGF-1 levels, which attenuates insulin-related growth signaling and reduces metastatic disease burden in preclinical animal models.

For metastatic cancer patients, insulin-lowering diets (like low-carb or intermittent fasting) are safe and feasible adjuncts to standard care. They improve metabolic markers (insulin, glucose) and may help control disease, but they are not yet proven to extend survival. Consult your oncology team to implement these strategies safely, ensuring they do not exacerbate weight loss or cachexia.

Low baseline triglyceride levels (<1.7 mmol/L) predict a more sustained and significant weight loss and glycemic response to gastric contractility modulation (GCM) therapy.

If considering GCM therapy, checking baseline triglycerides may help predict success. Patients with lower triglycerides are more likely to experience sustained weight loss and better glycemic control from the device.

Orthopedic manual physical therapists demonstrate high confidence and knowledge regarding lifestyle screening but exhibit significantly lower actual practice frequency, with alcohol counseling being the most neglected lifestyle topic.

If you are a physical therapist, your confidence in discussing lifestyle factors does not guarantee you are discussing them. Specifically, check your own habits and comfort levels regarding alcohol and smoking, as these are the most likely topics to be skipped despite your knowledge. Prioritize brief, routine screening for these high-impact factors during every patient interaction, regardless of your specialty.

During maximal dynamic sprint cycling, the Root Mean Square (RMS) magnitude of surface electromyography (SEMG) does not significantly change from pre-fatigue to post-fatigue states, despite significant reductions in power output and cycling speed.

If you are using wearable EMG to monitor fatigue during sprint cycling, do not rely on the RMS magnitude of the signal. The study shows that even when you are significantly fatigued (power drops >50%), the electrical signal magnitude (RMS) stays roughly the same. Instead, monitor power output and cycling speed, which do reflect the fatigue state. SEMG RMS is not a reliable indicator of fatigue during maximal dynamic efforts.

Specific essential minerals (Calcium, Potassium, Magnesium, Iron) are critical cofactors for immune cell metabolic reprogramming (glycolysis vs. oxidative phosphorylation) and polarization (M1 pro-inflammatory vs. M2 pro-resolution).

Immune cells change their energy usage based on their function (inflammation vs. healing). Essential minerals like Calcium, Potassium, and Magnesium are required for these metabolic switches to function correctly. Deficiencies may lock immune cells in a pro-inflammatory state.

GLP-1 receptor agonists (GLP-1 RAs) show promise as gerotherapeutic drugs by protecting against aging-related risk factors such as oxidative stress, cellular senescence, and inflammation, and may reverse brain aging and prevent sarcopenic obesity, although lifespan extension in humans is not yet reported.

If you are considering GLP-1 RAs for weight loss, discuss with your doctor their potential anti-aging benefits, such as reducing inflammation and protecting against cellular senescence. While they are not yet proven to extend lifespan in humans, they may offer significant healthspan benefits.

In individuals with type 2 diabetes and existing complications, a 5-day prolonged fasting-mimicking diet followed by a glucose load significantly reduces cellular resistance to dicarbonyl stress and increases oxidative stress markers, indicating heightened susceptibility to metabolic harm upon refeeding.

If you have Type 2 Diabetes with known complications (like kidney or nerve issues), extreme fasting followed by a large carbohydrate load may stress your cells more than it helps them. While fasting can improve insulin sensitivity in some, it appears to reduce your cells' ability to handle stress in this specific subgroup. Consult your doctor before attempting prolonged fasting, as your body may react with increased oxidative stress rather than metabolic improvement.

Body size metrics (BMI, waist circumference) factor load independently of cardiometabolic health metrics (lipids, blood pressure), suggesting they are distinct latent constructs rather than a single unified 'obesity' phenotype.

Your health is not defined solely by your weight. This study shows that body size and metabolic health (like blood pressure and cholesterol) are distinct factors. You can improve your metabolic health through weight-neutral approaches (like focusing on nutrition and activity without emphasizing weight loss) without needing to lose weight first. This reduces stigma and may improve engagement with health behaviors.

Intensive lifestyle intervention (weight loss, reduced caloric intake, increased physical activity) does not significantly prevent diabetic peripheral neuropathy in patients with Type 2 Diabetes Mellitus (T2DM) and may have negative effects in some contexts.

While weight loss is generally good for health, aggressive lifestyle interventions alone may not prevent nerve damage in Type 2 Diabetes and should not replace standard glycemic management.

Adjustable gastric banding is associated with less body weight loss and less improvement in glucose levels compared to Roux-en-Y gastric bypass, sleeve gastrectomy, and biliopancreatic diversion, although the difference in weight loss between banding and other surgeries was not statistically significant in this meta-analysis due to limited power.

Among bariatric surgeries, Roux-en-Y, sleeve, and biliopancreatic diversion are more effective than adjustable gastric banding for improving blood glucose levels. While weight loss differences were not statistically significant in this meta-analysis, other studies suggest banding may result in less weight loss. Patients should discuss the trade-offs between procedure complexity and metabolic benefits with their surgeon.

Long-term negative energy balance via exercise shifts substrate oxidation toward lipids during submaximal exercise, a trait that is also genetically influenced.

Consistent moderate exercise over months teaches your body to burn more fat as fuel during activity. This is an adaptation to the energy deficit, not just the exercise intensity itself.

Maintaining weight loss after VLCD treatment is extremely difficult, with majority of patients regaining significant weight within 1-2 years, regardless of maintenance strategies.

Don't expect VLCD to be a permanent fix. Most people regain the weight within a year or two. To keep it off, you must use the refeeding period to learn behavioral strategies and nutrition education, as the diet itself does not teach long-term habits.

Lifestyle interventions do not significantly reduce mortality, stroke, or heart disease outcomes in the short-to-medium term, though they may reduce cancer recurrence in specific subgroups.

While lifestyle interventions may not immediately reduce mortality or heart disease risk, they significantly improve metabolic health and may reduce cancer recurrence. Focus on sustainable habits rather than immediate life-extension metrics.

Modified alternate-day fasting does not produce statistically significant improvements in serum lipid profiles (Total Cholesterol, LDL, HDL, Triglycerides) or Fasting Blood Sugar over a 6-week period in overweight/obese women.

While you will likely lose weight and lower blood pressure, do not expect significant changes in your cholesterol or blood sugar levels within just 6 weeks of this specific fasting protocol.

Fat loss during Ramadan fasting is significantly reduced or absent in females aged 36-70 years, unlike males and younger subjects.

Older women practicing Ramadan fasting may not see significant fat loss, though they will likely lose weight and lean mass. Focus on maintaining muscle through protein and strength training rather than expecting fat reduction.

Intermittent Energy Restriction (IER) does not provide superior improvements in cardiovascular risk markers (lipids, glucose, insulin, blood pressure) compared to Continuous Energy Restriction (CER) over the long term.

Do not expect IER to give you better blood work (cholesterol, blood sugar) than continuous calorie restriction. Any improvements in these markers are likely due to the weight loss itself, not the fasting pattern. Focus on achieving and maintaining a healthy weight through whichever method you can sustain.

2-Deoxy-D-glucose (2DG) acts as a CR mimetic by inducing physiological effects similar to CR (reduced body temperature, fasting insulin) without significant caloric restriction, though it has a narrow therapeutic window and potential toxicity.

2DG mimics some metabolic benefits of CR (like lower insulin) but has a narrow safety margin and no proven lifespan benefit yet. It is not currently recommended for human use but serves as a research tool.

Intermittent energy restriction (IER) does not significantly differ from continuous energy restriction (CER) in preserving fat-free mass (FFM) or fat mass (FM) when expressed as a percentage of total weight lost.

Don't worry that IER will cause more muscle loss than daily dieting. When you lose weight, the proportion of muscle vs. fat lost is similar for both methods. To protect muscle, incorporate resistance training into your routine.

Changes in lean mass do not significantly affect Resting Metabolic Rate (RMR) in the short term (16 weeks) for overweight/obese premenopausal women.

Do not rely on building muscle to significantly boost your resting metabolism for fat loss. While muscle is healthy and functional, its metabolic impact is small. Focus on creating a caloric deficit through diet and activity for effective fat loss.

During total starvation, fat loss is significantly reduced (averaging 75 g/day) and lean tissue loss is significantly increased (averaging 576 g/day) compared to caloric restriction (fat loss 553 g/day, lean loss 224 g/day).

If your goal is to lose fat while keeping muscle, do not fast completely. This 1967 study found that a moderate 800-calorie diet burned fat 7 times faster than total starvation, while total starvation caused 2.5 times more muscle loss. Rapid weight loss on a fast is mostly water and tissue breakdown, not fat.