Browse the evidence

Intense exercise (>70% VO2max) can increase intestinal permeability and endotoxemia, leading to temporary systemic inflammation and gastrointestinal distress.

High-intensity or prolonged endurance exercise can temporarily compromise your gut barrier, leading to inflammation and GI issues. This is common in ultrarunning or intense military training. While the long-term benefits of training outweigh these acute stresses, managing hydration, nutrition, and recovery is crucial to mitigate these temporary negative effects.

GLP-1 receptor agonists reduce blood pressure and improve lipid profiles (LDL-C, triglycerides), contributing to the stabilization of atherosclerotic plaques and reduced cardiovascular risk.

GLP-1RAs help lower blood pressure and improve cholesterol levels, which protects your arteries from plaque buildup. This is an added benefit beyond blood sugar control, helping to prevent heart attacks and strokes.

GLP-1 receptor agonists exhibit protective effects on the kidneys by reducing the decline in estimated glomerular filtration rate (eGFR) and delaying the onset of proteinuria in patients with Type 2 Diabetes.

GLP-1RAs help protect your kidneys from damage caused by diabetes. They slow down the loss of kidney function and reduce protein leakage into the urine, which is crucial for long-term kidney health.

Semaglutide increases the risk of biliary disease (cholelithiasis), which is a class effect of GLP-1 receptor agonists, likely due to rapid weight loss.

Be aware that semaglutide increases the risk of gallbladder problems like gallstones. This risk is associated with the rapid weight loss the drug causes. Report any severe abdominal pain, especially in the upper right side, to your doctor immediately.

Visceral adipose tissue (VAT) is strongly associated with insulin resistance, dyslipidemia, and hypertension, independent of subcutaneous fat and BMI, due to its pro-inflammatory secretory profile.

Where you store fat matters more than how much you weigh. Reducing visceral fat through diet and exercise is critical for lowering the risk of diabetes and heart disease, even if your overall weight doesn't change drastically.

DHA supplementation (600 mg/day for 16 weeks) significantly increases sleep duration and reduces night wakings in children.

For children with sleep issues, consider a DHA supplement of 600 mg per day for at least 16 weeks. This has been shown in an RCT to increase total sleep time by nearly an hour and reduce night wakings.

Vitamin D deficiency is associated with a higher risk of sleep disorders, including poor sleep quality, short sleep duration, and sleepiness.

Ensure you have adequate vitamin D levels, as deficiency is linked to poor sleep quality, short sleep duration, and sleepiness. Consider supplementation if you have limited sun exposure or dietary intake.

Sarcopenic obesity, defined as the concurrent presence of low muscle mass and high adiposity, has a compounding negative impact on health outcomes and is common in chronic disease populations.

For obese patients, especially those with chronic diseases, focusing solely on weight loss may be counterproductive. It is crucial to assess and preserve muscle mass through targeted interventions like resistance training and adequate protein intake, as sarcopenic obesity is associated with worse outcomes than obesity alone.

Muscle quality, assessed by muscle attenuation (fat infiltration) via CT or MRI, is an independent and emerging prognostic indicator for survival and outcomes, often more predictive than muscle mass alone.

For patients undergoing CT or MRI scans, muscle quality (attenuation) should be assessed alongside muscle mass, as it is a strong predictor of survival and outcomes. This is particularly relevant for cancer, critical illness, and liver disease patients. Future clinical practice should aim to make muscle quality assessment more routine.

Probiotic supplementation in overweight or obese adults produces a statistically significant but clinically small reduction in body weight, BMI, and fat percentage compared to placebo.

If you are overweight or obese, adding probiotics may help you lose a tiny amount of extra weight (about 0.6 kg) compared to not taking them. Do not rely on probiotics for weight loss; focus on diet and exercise first, as the probiotic effect is negligible in isolation.

Pitolisant (5-20 mg/day) significantly reduces self-reported excessive daytime sleepiness and fatigue in patients with moderate-to-severe obstructive sleep apnea who refuse or are non-adherent to CPAP therapy, without improving objective maintenance of wakefulness.

If you have moderate to severe sleep apnea but cannot or will not use CPAP, pitolisant (5-20mg daily) can significantly reduce your daytime sleepiness and fatigue. It does not fix the breathing pauses or objectively improve your ability to stay awake in a lab test, but it does make you feel less sleepy and improves your quality of life. It is generally safe with side effects similar to placebo.

Exercise acts as a non-pharmacological intervention that counteracts age-related insulin resistance by enhancing mitochondrial oxidative capacity, improving autophagy, and reducing oxidative stress and inflammation.

Regular exercise is one of the most effective ways to combat age-related insulin resistance. It improves your muscles' ability to use energy, clears out cellular waste, and reduces inflammation, keeping your insulin sensitivity high.

Testosterone treatment in older men with low testosterone improves walking distance and perceived mobility, although the effect on slow walkers is small.

Testosterone therapy may slightly improve your walking distance and perceived mobility, especially if you are not a slow walker. The effect is small, but it may still be clinically important for maintaining independence. The treatment involves daily application of a gel, with dose adjustments to keep levels in the normal range for young men.

Higher consumption of ultra-processed foods is associated with significantly increased intake of free sugars, saturated and trans fats, sodium, and energy density, while decreasing intake of dietary fiber and potassium.

To improve your nutrient intake, reduce the proportion of ultra-processed foods in your diet. This category includes mass-produced packaged breads, ready meals, fast food, pastries, and sugary drinks. Replacing these with unprocessed or minimally processed foods (like fruits, vegetables, meats, and grains) will naturally lower your intake of harmful sugars, sodium, and saturated fats while increasing beneficial fiber and potassium.

Long-term daily consumption of heat-inactivated Lactobacillus gasseri CP2305 tablets significantly reduces anxiety and sleep disturbance in healthy young adults under chronic stress, while improving objective sleep metrics and modulating gut microbiota.

If you are under chronic stress, taking a daily supplement of heat-inactivated Lactobacillus gasseri CP2305 (specifically strain CP2305) for at least 24 weeks may help lower anxiety and improve sleep quality. Ensure you avoid other probiotic-rich foods or supplements during this period to isolate the effect.

Hot flashes (vasomotor symptoms) are a major contributor to sleep disturbances during the menopausal transition, with HF-associated wake time significantly contributing to overall wakefulness after sleep onset (WASO).

If you are experiencing sleep issues during menopause, recognize that hot flashes are a primary driver of fragmented sleep. This is a physiological response to hormonal changes, not just 'aging'. Treating the hot flashes (via hormonal or non-hormonal options) often improves sleep quality, which is crucial for long-term health.

Menopausal stage (early/late transition, postmenopause) is associated with increased odds of self-reported sleep difficulties, particularly frequent awakenings, independent of age.

Track your sleep relative to your menopausal stage. If you are in perimenopause or postmenopause, expect a higher likelihood of sleep issues like frequent awakenings. This is a statistical norm, not a personal failure. Proactive management (CBT-I, treating HFs) is recommended.

Surgical menopause (bilateral oophorectomy) is associated with more severe sleep disturbances and higher prevalence of sleep difficulty compared to natural menopause, largely due to more severe hot flashes.

If you had your ovaries removed, expect more severe sleep issues than natural menopause. Discuss Hormone Therapy (HT) with your doctor if not contraindicated, as it improves sleep. If HT is not an option, CBT-I and non-hormonal medications are effective alternatives.

Taurine supplementation improves cardiovascular health, brain function, and diabetic pathologies, acting as a conditional longevity vitamin.

Consider taurine supplementation (commonly 1-3g/day in studies) if you have high blood pressure, diabetes, or cardiovascular risk. It supports mitochondrial health and vascular function.

Vitamin D and Magnesium are critical 'survival/longevity' vitamins, and their widespread deficiency in the US population contributes significantly to chronic disease and accelerated aging.

Ensure adequate Vitamin D (via sun, diet, or supplementation) and Magnesium (via leafy greens, nuts, seeds, or supplementation). These are foundational for long-term health and may be more critical than standard guidelines suggest.

Myosteatosis is associated with insulin resistance, type-2 diabetes, hypertension, and dyslipidemia independent of total body adiposity (BMI or DXA whole body fat).

Metabolic health is not guaranteed by a normal BMI. Fat infiltration into muscles (myosteatosis) is a specific risk factor for diabetes and heart disease, independent of overall body fat. For those with normal weight but metabolic issues, assessing muscle quality (via imaging or functional proxies) may be necessary.

Both short (<6-7 hours) and long (>9 hours) sleep durations are associated with an increased risk of developing type 2 diabetes mellitus (T2DM) and gestational diabetes mellitus (GDM), with short sleepers having approximately 2 times higher odds of prediabetes/T2DM and long sleepers having 60% higher odds compared to normal sleepers (7-8 hours).

Aim for 7-8 hours of sleep per night. Both short sleep (<6-7 hours) and long sleep (>9 hours) are associated with a higher risk of developing type 2 diabetes. Maintaining a consistent and adequate sleep duration is important for metabolic health and diabetes prevention.

Leaving formal education during early adulthood causes a significant increase in the consumption of sugar-sweetened beverages and confectionery.

When you finish school or university, your diet is likely to get worse, specifically regarding sugary drinks and sweets. This is because you lose the structure of school. To prevent this, anticipate the change, limit your access to sugary drinks at home or work, and replace the 'snacking' habit with healthier alternatives during your new free time.

Whole soy foods (e.g., soy nuts, tofu) significantly improve glycemic control and reduce blood pressure, whereas purified soy protein isolates or isolated isoflavone supplements often fail to produce these benefits.

To lower blood sugar and blood pressure using soy, prioritize whole soy foods like tofu, edamame, or soy nuts over protein powders or isolated isoflavone supplements. The fiber and other compounds in whole soy are necessary for the metabolic benefit; isolates often fail to deliver the same results.