Browse the evidence

Centenarians exhibit a distinct gut microbiota profile characterized by increased diversity and enrichment of specific beneficial taxa (Akkermansia, Christensenellaceae, Bifidobacterium) alongside an increase in facultative anaerobes (Proteobacteria), which correlates with longevity and healthy aging.

While you cannot simply 'take' a centenarian microbiota, the research suggests that maintaining high microbial diversity and supporting beneficial taxa (like Akkermansia and Christensenellaceae) through a diverse, fiber-rich diet and healthy lifestyle may support the adaptive gut ecosystem associated with healthy aging.

Long-term adherence to DASH diet guidelines does not independently reduce the incidence of hypertension or cardiovascular mortality in older women after adjusting for confounding lifestyle factors.

While the DASH diet is recommended for blood pressure control, this study suggests that simply 'eating somewhat healthy' according to DASH guidelines may not be enough to prevent hypertension or heart disease in older women over the long term, especially if other risk factors (like smoking or lack of exercise) are present. To potentially see the benefits seen in clinical trials, one might need to achieve a very high level of strict adherence to the diet, which is difficult in real-world settings.

Deficiencies in pattern recognition receptors (TLRs and NLRs) or their signaling pathways lead to dysbiosis, impaired mucosal barrier function, and increased susceptibility to inflammatory bowel disease (IBD) and metabolic syndrome.

Maintain a healthy gut barrier by supporting your immune system's ability to sense bacteria. This involves consuming fiber to produce SCFAs, which help regulate immune receptors. If you have a family history of IBD or metabolic syndrome, prioritizing gut health through diet is crucial to compensate for potential receptor sensitivities.

Intestinal Alkaline Phosphatase (IAP) supplementation can detoxify LPS, preserve gut barrier integrity, and attenuate liver fibrosis in NAFLD and ALD models.

Intestinal Alkaline Phosphatase (IAP) is a naturally occurring enzyme that helps detoxify harmful bacterial products in the gut. While promising in animal studies for reducing liver fibrosis and inflammation, it is not yet an approved treatment for humans. Focus on maintaining gut health through diet and potentially discussing targeted therapies with a healthcare provider.

Strategic timing of sleep to follow exposure therapy can strengthen extinction memories and improve treatment outcomes for PTSD.

If you are doing exposure therapy for PTSD, try to ensure you get good sleep immediately following your sessions. This helps your brain consolidate the 'safety' learning you practiced, making the therapy more effective. Treat sleep as an active part of your treatment plan, not just downtime.

Chronic systemic low-grade inflammation, driven by Western lifestyle factors (diet, stress, inactivity), causes insulin resistance and metabolic syndrome by triggering an evolutionary energy reallocation mechanism that prioritizes glucose for the brain and immune system over peripheral tissues.

Focus on reducing chronic inflammatory triggers rather than just managing symptoms. Prioritize anti-inflammatory dietary patterns (high omega-3, fiber, antioxidants), stress management, sleep, and physical activity to resolve the evolutionary conflict between your modern lifestyle and ancient genome.

Genetic deficiency of STAT6 leads to increased fatty acid oxidation and resistance to diet-induced obesity, but results in insulin resistance and glucose intolerance due to hepatic steatosis.

This finding highlights a trade-off in metabolic regulation: blocking the STAT6 pathway prevents fat gain but harms insulin sensitivity. It illustrates that 'lean' does not always mean 'metabolically healthy,' as ectopic fat storage in the liver can still cause insulin resistance.

Roux-en-Y gastric bypass (RYGB) surgery selectively reduces neural activation in the mesolimbic reward pathway and desire to eat in response to high-calorie food cues, independent of restrictive or malabsorptive mechanisms.

Bariatric surgery changes how your brain processes the reward of high-calorie foods, reducing the desire to eat them. This isn't just willpower or stomach size; it's a biological shift in reward signaling. This insight suggests that future non-surgical treatments could target these same neural pathways to help manage cravings.

Long-term adherence to strict low-carbohydrate, high-fat diets may increase cardiovascular risk factors, including plasma homocysteine levels and potentially insulin resistance, due to elevated circulating free fatty acids.

Be cautious with strict low-carb, high-fat diets over the long term. They may raise homocysteine and potentially insulin resistance. Monitor your blood work and consider balancing fat intake with unsaturated fats or increasing protein to mitigate risks.

Blocking IL-6 trans-signaling (but not classical signaling) using soluble gp130 (sgp130) or anti-IL-6R antibodies can prevent muscle wasting in cachexia without impairing beneficial immune responses.

For patients with severe muscle wasting due to disease, emerging treatments focus on blocking specific inflammatory pathways (trans-signaling) rather than broadly suppressing the immune system. This approach aims to stop muscle loss while preserving necessary immune defenses. Consult an oncologist or specialist for eligibility for such targeted therapies.

Human exposure to endocrine-disrupting compounds (EDCs) found in aquatic environments and drinking water is linked to serious health effects including infertility, thyroid dysfunction, early puberty, endometriosis, diabetes, and obesity.

Be aware that endocrine disruptors like BPA, phthalates, and pesticides are present in water supplies globally. While immediate toxicity is low, long-term accumulation is a concern. Reducing exposure to plastics and processed foods may help minimize intake of these compounds.

Higher intake of processed ingredients (PI), such as oils, sugars, and flours, is consistently associated with lower body weight and reduced odds of obesity, whereas ultra-processed food (UPF) intake shows no significant association with body weight markers.

Focus on the type of food rather than just its processing level. This study suggests that diets higher in processed ingredients (like oils, sugars, and flours used in cooking) were associated with lower body weight, while ultra-processed snacks showed no link to weight. Prioritize whole foods for nutrient density, but do not fear basic processed ingredients.

Paracetamol use in patients with T2DM and Non-Alcoholic Fatty Liver Disease (NAFLD) carries a heightened risk of hepatotoxicity due to shared metabolic pathways and reduced clearance.

If you have diabetes and take paracetamol regularly for joint pain, ask your doctor to check your liver enzymes. Your liver may process the drug differently if you have fatty liver disease, increasing the risk of damage even at standard doses.

Chronic hyperinsulinemia reduces lifespan and healthspan by suppressing autophagy and antioxidant defenses (Nrf2) while promoting cellular senescence and cardiovascular damage.

To promote longevity, minimize chronic insulin exposure. This supports practices like intermittent fasting, low-carbohydrate diets, and regular exercise, all of which lower baseline insulin. In animal models, lowering insulin extends lifespan; in humans, low insulin levels are associated with healthy aging in nonagenarians.

Antioxidant supplementation (Vitamin C, Co-enzyme Q10) does not improve recovery from exercise-induced muscle damage and may potentially delay recovery or worsen performance in some contexts.

Do not rely on antioxidant supplements like Vitamin C or CoQ10 to speed up your recovery after exercise. They do not improve recovery rates and may even slow it down or increase muscle damage in some cases.

DHA improves endothelial function and arterial compliance more effectively than EPA, potentially through mechanisms involving membrane fluidity and nitric oxide release.

For vascular health, DHA is likely more beneficial than EPA. It helps improve how your blood vessels dilate and respond to stress, which may protect against atherosclerosis. Look for DHA-dominant supplements for these specific vascular benefits.

Myostatin inhibitors (e.g., neutralizing antibodies, soluble receptor decoys) increase muscle mass and strength but are associated with significant side effects, limiting their current utility.

Myostatin inhibitors are investigational drugs that can increase muscle mass and strength but are currently limited by significant side effects like fatigue, confusion, and muscle contractions. They are not yet standard treatments.

Surgical weight loss via Roux-en-Y gastric bypass (RYGB) induces a distinct gut microbiome shift characterized by a 52-fold increase in phylum Proteobacteria and a decrease in the Firmicutes-to-Bacteroidetes ratio, which correlates with improved insulin sensitivity and weight loss.

If you undergo Roux-en-Y gastric bypass, your gut bacteria will change significantly, specifically an increase in Proteobacteria. This shift is unique to surgery and not seen in non-surgical weight loss. While causality is still being studied, this microbial change is associated with improved insulin sensitivity and weight loss. Consult a bariatric surgeon to understand if this anatomical change is appropriate for your metabolic health.

Obesity is associated with an elevated Firmicutes-to-Bacteroidetes ratio in the gut, which decreases following weight loss, although some studies show conflicting results.

Obesity is linked to a higher ratio of Firmicutes to Bacteroidetes bacteria in the gut. This ratio tends to decrease when you lose weight, whether through surgery or diet. However, this is a correlation, not necessarily a cause, and some studies show different patterns. Focus on sustainable weight loss rather than targeting specific bacteria alone.

Host genetic variants in the FHIT, TDRG1, and ELAVL4 genes are significantly associated with the abundance of specific adiposity-linked fecal microbes, suggesting host genetics mediate the microbiome-obesity link.

This finding explains why two people might have different gut bacteria for the same diet, due to their genetics. It does not currently offer a direct action for weight loss but highlights that personalized medicine approaches may be necessary for microbiome-based therapies.

Diet-induced weight loss in individuals with metabolic syndrome reduces sympathetic nerve activity by altering the firing pattern of single vasoconstrictor fibers (decreasing firing rate, probability, and multiple firing incidence), rather than solely by reducing the recruitment of active fibers.

If you have metabolic syndrome, losing weight through a calorie-restricted diet (specifically a DASH-style diet) does more than just shrink fat cells; it fundamentally reprograms your nervous system's stress signals. This reprogramming slows down the firing rate and frequency of the nerves that constrict blood vessels, directly lowering blood pressure and heart rate. This suggests that weight loss is a potent 'nerve-calming' therapy for metabolic health.

Obstructive sleep apnoea syndrome (OSAS) is associated with abnormal lipid peroxidation, specifically higher levels of oxidized LDL and increased susceptibility to oxidation, which contributes to cardiovascular disease risk.

If you have severe sleep apnoea, your body is experiencing increased oxidative stress on your blood vessels, which raises your risk of heart disease. Using CPAP therapy for more than a year can significantly improve the susceptibility of your LDL to oxidation, potentially mitigating this risk. It is crucial to adhere to CPAP treatment to manage these metabolic effects.

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.

DNA methylation at the CD38 locus is positively associated with BMI and waist circumference, potentially linking immune function (CD38 expression) to metabolic traits.

This finding suggests a link between immune system activity (specifically CD38) and body weight. While you cannot directly target this methylation site, maintaining immune health through anti-inflammatory diets and regular activity may support healthy metabolic function.