Browse the evidence

Chronic low-grade inflammation (inflammaging) in skeletal muscle, driven by factors like TNF-α and IL-1β, activates IKKβ/NF-κB and JNK pathways, which phosphorylate IRS-1 on serine residues, thereby blocking normal insulin signaling.

Reducing systemic inflammation through anti-inflammatory dietary patterns and exercise can help maintain healthy insulin signaling in muscles.

The anti-seizure effects of ketogenic diets in animal models of epilepsy and autism are mediated by specific gut bacteria (Akkermansia and Parabacteroides) that modulate the GABA/glutamate ratio in the brain.

This mechanism is primarily relevant for understanding the biological basis of KD in neurological disorders. It suggests that the gut microbiome is a key target for therapeutic intervention in epilepsy and autism, potentially allowing for microbiome-based therapies alongside or instead of strict dietary changes.

Omega-3 fatty acid supplementation reduces obesity-associated inflammation but does not necessarily improve insulin sensitivity or reduce body weight.

Omega-3s can help reduce inflammation, which is good for overall health. However, do not expect them to lower your blood sugar significantly or help you lose weight. They are a supportive tool, not a primary treatment for Metabolic Syndrome.

Polysomnographic (PSG) measures do not consistently show sleep architecture changes linked directly to menopausal stage, despite strong self-report of sleep difficulties.

If your sleep study (PSG) looks normal but you feel tired, your sleep disturbance is real. Menopausal sleep issues often involve subjective quality and fragmentation (like from hot flashes) rather than gross architectural changes. Trust your experience and seek treatment for symptoms.

Maintaining optimal levels of 'longevity vitamins' (including taurine, ergothioneine, PQQ, queuine, and carotenoids) prevents the insidious accumulation of oxidative and metabolic damage associated with aging, thereby prolonging healthy lifespan.

Focus on dietary sources of the 11 putative longevity vitamins: taurine (seafood, meat), ergothioneine (mushrooms), PQQ (fermented foods, parsley), queuine (grains, beans), and carotenoids (colorful vegetables/fruits). If diet is insufficient, consider supplementation to reach optimal levels, as standard 'adequacy' guidelines may not prevent long-term aging damage.

Current standardized assessment of muscle quality is lacking, with no single ideal endpoint measure, necessitating consensus on definitions and standardized imaging or functional tests.

There is currently no single, standardized, widely available clinical test for 'muscle quality.' Clinicians use proxies like grip strength and gait speed. Research is ongoing to standardize imaging (ultrasound, MRI) for routine use. Patients should be aware that 'muscle quality' is a distinct concept from 'muscle mass' and may require specialized assessment.

Thyroid hormone receptor beta (THRβ) agonists and specific thyroid hormone metabolites (T2, T1AM) reduce hepatic lipid content and serum cholesterol in NAFLD and hypercholesterolemia models by stimulating fatty acid oxidation and cholesterol clearance without the cardiac side effects of natural thyroid hormones.

Current standard care for NAFLD focuses on lifestyle changes. However, emerging research indicates that specific thyroid hormone analogs and metabolites (like T2 and T1AM) are being developed to treat liver fat and high cholesterol. These are not yet available as standard treatments but represent a promising future direction for patients who do not respond to lifestyle interventions. Do not self-administer thyroid hormones; consult a specialist about clinical trials if eligible.

Thyroid-stimulating hormone (TSH) directly promotes hepatic lipogenesis and cholesterol biosynthesis, worsening NAFLD and hypercholesterolemia, independent of its role in stimulating thyroid hormone production.

If you have high TSH levels, even if your T3/T4 are normal, it may contribute to fatty liver and high cholesterol. Treating hypothyroidism to normalize TSH might help improve these metabolic markers, although lifestyle changes remain the primary treatment for NAFLD.

Glucagon-Thyroid Hormone (T3) conjugates reduce liver fat and improve dyslipidemia in obesity models by targeting the liver specifically, avoiding the cardiac and skeletal side effects of systemic T3 therapy.

Research is exploring new ways to deliver thyroid hormones to the liver to treat fatty liver disease without affecting the heart or bones. One promising approach involves linking T3 to glucagon to target the liver. This is still experimental and not available as a standard treatment.

High baseline levels of the hepatokine Selenoprotein P (SeP) are associated with 'exercise resistance,' blunting the beneficial metabolic adaptations to exercise and reducing aerobic capacity in obese individuals.

If you are obese and struggling to lose weight despite exercise, high levels of Selenoprotein P might be blunting your results. The paper suggests you may need longer duration or higher intensity exercise to overcome this 'exercise resistance' and improve your body's ability to use fat for fuel.

Beige adipocytes can repress adipose tissue fibrosis and improve glucose homeostasis through mechanisms independent of UCP1 and body weight reduction.

Activating beige fat may improve metabolic health by preventing fat tissue scarring (fibrosis), which helps glucose regulation even without significant weight loss.

Gut dysbiosis in obesity increases intestinal permeability, allowing lipopolysaccharide (LPS) to enter circulation, which triggers adipose tissue macrophages to switch from an anti-inflammatory (M2) to a pro-inflammatory (M1) phenotype via TLR4, thereby driving low-grade chronic inflammation.

If you have obesity, your gut health may be driving inflammation. A high-fat or high-sugar diet can damage your gut barrier, letting bacterial toxins (LPS) into your blood. This triggers immune cells in your fat tissue to become pro-inflammatory, worsening insulin resistance and fat storage. Improving gut health through fiber and reducing processed foods may help reduce this inflammation.

Short-chain fatty acids (SCFAs), particularly butyrate, exert anti-inflammatory effects by promoting macrophage polarization to the M2 phenotype and inhibiting NF-κB activation.

Eat more fiber-rich foods (vegetables, whole grains) to feed your gut bacteria. They produce short-chain fatty acids (SCFAs) like butyrate, which help calm inflammation by switching immune cells to a healing (M2) state. This is especially important if you have inflammatory conditions.

Anthocyanins from purple fruits and vegetables improve cognitive function and reduce beta-amyloid deposition in early-onset Alzheimer's disease models via PPARγ activation.

Incorporate anthocyanin-rich foods (blueberries, black currants, purple vegetables) into your daily diet. This may help improve verbal fluency and memory in elderly individuals with mild cognitive impairment.

Loss-of-function mutations in the zinc transporter SLC30A8 (ZnT8) reduce the risk of type 2 diabetes in humans, likely by preventing the formation of toxic human islet amyloid polypeptide (hIAPP) oligomers through altered insulin oligomerization dynamics.

Do not assume zinc supplementation is a cure-all for diabetes. While deficiency is a risk factor, the paper suggests that genetic variations in zinc transport (ZnT8) significantly impact diabetes risk, and excessive zinc intake may actually worsen metabolic markers. Focus on overall nutrient balance rather than high-dose supplementation without medical guidance.

European children consume significantly higher proportions of total and added sugars relative to energy intake compared to adults, with sweet products and beverages being the primary sources.

If you are tracking sugar intake for health or weight management, pay close attention to children's diets. They are consuming a disproportionately high amount of sugar, primarily from sweets and sugary drinks, compared to adults. To reduce this, prioritize whole fruits over juices and limit confectionery and sweetened beverages, which are the main drivers of added sugar intake in this demographic.

Specific polyphenols found in fruits (e.g., resveratrol, pterostilbene, quercetin) prolong lifespan and control signs of aging by regulating inflammation, cell senescence, and oxidative damage.

Include fruits known for high polyphenol content, such as berries (blueberries, cranberries), grapes, and cherries, in your diet to potentially benefit from their anti-aging properties.

Chronic activation of AMPK using the direct activator A-769662 promotes white adipose tissue browning, increases energy expenditure, and protects against diet-induced obesity and metabolic dysfunction in high-fat diet-fed mice.

This study suggests that directly activating the AMPK enzyme in fat cells using a specific compound (A-769662) can help burn fat and prevent obesity in mice. While this is not a human supplement, it supports the idea that boosting cellular energy sensors (like AMPK) through exercise or diet might mimic these effects.

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.

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.

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.

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.