Browse the evidence

Global age-standardized diabetes prevalence has increased or remained unchanged in every country since 1980, with no country showing a statistically significant decrease.

Diabetes risk is rising globally, driven by aging populations and increasing obesity, particularly in low- and middle-income countries. While you cannot change your genetics or age, focusing on maintaining a healthy weight and engaging in regular physical activity are critical strategies to mitigate your personal risk, as these are the primary modifiable drivers identified in the global trends.

Particulate matter air pollution is the leading contributor to global disease burden, accounting for 8.0% of total DALYs in 2021.

Air pollution is the leading risk factor for global disease burden. Reducing exposure is crucial for long-term health.

Cellular senescence is a principle causative factor in organismal aging and facilitates aging-associated diseases.

This mechanism explains why aging tissues accumulate damage. Interventions targeting senescent cells (senolytics) are being researched to mitigate age-related diseases, though specific protocols are not detailed in this text.

Senescent cells secrete pro-inflammatory factors (SASP) that drive further senescence in neighboring cells and impair immune function, creating a self-perpetuating cycle of tissue damage.

The accumulation of senescent cells contributes to tissue aging. While senolytics (drugs that clear senescent cells) are in development, current practical steps involve supporting the body's natural clearance mechanisms through healthy lifestyle habits that reduce cellular stress.

Extrinsic morphogen gradients (Wnt, Shh, BMP) play a critical role in patterning the somite and regulating the expression of key myogenic transcription factors (MyoD, Myf5) during embryonic development.

Embryonic muscle development is heavily influenced by environmental signals (morphogens) that guide cell fate. This highlights the complexity of muscle biology, though direct application to adult training is limited.

Standardized Glycemic Index (GI) measurement requires a minimum of 10 healthy subjects and 2-3 repeated trials of the reference food (glucose) to achieve statistically valid precision.

If you are evaluating a food's Glycemic Index, ensure the data comes from a study with at least 10 healthy participants and uses glucose as a standardized reference. Single-subject or anecdotal GI claims are statistically unreliable.

Ketogenic diets are an effective treatment for severe childhood epilepsy, reducing seizure frequency by 30-40%, comparable to modern antiepileptic drugs, and allowing for reduced drug use.

For severe childhood epilepsy, a ketogenic diet is a well-established, effective treatment that can reduce seizures by 30-40%, comparable to medication, and may allow for reduced drug use and side effects.

Gut microbiota transplantation from high-cholesterol diet-fed mice to germ-free mice is sufficient to induce hepatic lipid accumulation, inflammation, and cell proliferation, demonstrating a causal role for microbiota in NAFLD-HCC.

Your gut bacteria are not just passengers; they can drive liver disease. If your diet has altered your gut bacteria to favor harmful types, those bacteria can directly cause liver inflammation and fat accumulation, even if you change your diet later.

High-intensity interval training (HIIT) has no significant effect on insulin, lipid profiles, C-reactive protein (CRP), or interleukin-6 (IL-6) in overweight/obese populations.

If you are overweight or obese, do not expect high-intensity interval training to significantly change your insulin levels, lipid profile, or inflammatory markers (CRP, IL-6). Focus on HIIT for its proven benefits on aerobic fitness, blood pressure, and body composition instead.

Without immediate and effective intervention, the global prevalence of adult overweight and obesity will continue to increase, reaching 3.80 billion adults by 2050.

The current trajectory of global obesity is unsustainable and will affect over half the adult population by 2050. Individuals and policymakers must move beyond simple awareness and implement aggressive, targeted interventions tailored to local contexts to prevent this crisis.

There is no clinical evidence from Randomized Controlled Trials (RCTs) for the gastrointestinal health effects of kombucha, miso, kimchi, or tempeh in humans.

Be cautious with claims about kombucha, kimchi, miso, and tempeh curing gut diseases. While they are healthy foods with interesting properties, there are no human clinical trials proving they treat gastrointestinal disorders. Enjoy them as part of a balanced diet, but don't rely on them as medicine yet.

Supplementation with long-chain or short-chain omega-3 fatty acids does not significantly reduce total mortality or combined cardiovascular events in adults, regardless of baseline cardiovascular risk.

Do not rely on omega-3 supplements to prevent heart attacks or death. While eating oily fish is still recommended by guidelines, taking high-dose omega-3 capsules has not been shown to provide the cardiovascular protection previously claimed. Focus on proven lifestyle factors instead.

Higher intake of omega-3 fatty acids does not increase the risk of cancer, nor does it significantly reduce cancer incidence.

You do not need to worry that omega-3 supplements will cause cancer, nor should you expect them to prevent it. The risk profile for cancer is neutral.

Accelerated brain aging, specifically measured by a cognition-optimized plasma proteomic model (CognitionBrain), predicts Alzheimer's disease progression and cognitive decline independently of and as strongly as the current best blood biomarker, pTau-181.

For those concerned about Alzheimer's, this research suggests that a new blood test measuring brain-specific aging (CognitionBrain) is just as powerful as the current gold standard (pTau-181) and provides additional, independent information. Using both together offers the best prediction of cognitive decline. This highlights the importance of early, multi-faceted biomarker screening for those with family history or risk factors, rather than relying on a single test.

Computed Tomography (CT) imaging at the L3 vertebra is a gold-standard, accurate, and precise method for assessing skeletal muscle cross-sectional area and visceral adipose tissue, allowing for the estimation of whole-body composition from single cross-sectional images.

For patients already undergoing CT scans for medical reasons (like cancer or ICU care), the images can be used to accurately assess muscle mass and fat distribution at the L3 vertebra level. This 'opportunistic' use provides critical nutritional data without exposing the patient to additional radiation.

Using recovery biomarkers (such as doubly labeled water and urinary nitrogen) is the most effective method to validate self-reported dietary intake and quantify measurement error.

For accurate dietary assessment in research, use recovery biomarkers like doubly labeled water or urinary nitrogen to validate self-reported data.

Daily supplementation with 1000 mg elemental calcium and 400 IU vitamin D3 does not reduce the incidence of invasive breast cancer in postmenopausal women.

For postmenopausal women, taking 1000 mg of calcium and 400 IU of vitamin D3 daily will not reduce the risk of developing invasive breast cancer. While these supplements are important for bone health, they should not be used as a strategy for breast cancer prevention.

Prenatal exposure to severe famine during the third trimester of gestation causes a significant reduction in birth weight, whereas exposure during the first trimester is associated with an increase in birth weight.

This historical natural experiment demonstrates that the timing of nutritional deprivation during pregnancy has distinct, opposing effects on fetal growth. Third-trimester starvation reduces birth weight, while first-trimester starvation is associated with increased birth weight, likely due to adaptive placental mechanisms. This highlights that 'malnutrition' is not a monolithic concept; its impact depends entirely on the developmental stage of the fetus.

The APOE2 allele is a protective factor for longevity, while the APOE4 allele is deleterious, with APOE being the only locus to consistently achieve genome-wide significance in GWAS of longevity.

The APOE2 gene variant is associated with a longer lifespan, while APOE4 is associated with a shorter one. While you cannot change your APOE status, understanding your genotype may inform your approach to cardiovascular and cognitive health management, as these are key pathways affected by APOE.

Rapamycin extends murine lifespan but does not slow the rate of aging, as its effects on most aging phenotypes are aging-independent rather than protective against age-related decline.

This study in mice shows that while rapamycin extends lifespan, it does not significantly improve most markers of physical or cognitive aging. The benefits seen in some areas (like exploratory activity or memory) appear to be direct drug effects rather than a slowing of the aging process. Therefore, relying on rapamycin for 'healthy aging' in humans is not supported by this evidence, as lifespan extension may be driven by cancer suppression rather than general anti-aging mechanisms.

A metabolic biomarker score derived from 14 circulating metabolites (including lipids, amino acids, and inflammatory markers) provides significantly better prediction of 5- and 10-year all-cause mortality than conventional clinical risk factors across all adult ages.

Standard blood tests (cholesterol, blood pressure) are not enough to accurately predict your risk of dying in the next 5-10 years, especially as you age. A specialized metabolic blood test (NMR metabolomics) that looks at 14 specific markers (lipids, amino acids, inflammation) provides a much more accurate risk score. This tool is currently best used by clinicians to make high-stakes decisions, such as determining if an elderly patient is too frail for surgery, rather than for self-management.

Positive airway pressure (PAP) therapy, including CPAP and ASV, does not reduce the risk of major adverse cardiovascular events (ACS, stroke, vascular death) or all-cause mortality in adults with sleep apnea compared to no treatment or sham.

If you have sleep apnea, use PAP to improve your sleep quality and daytime alertness, as it does provide symptomatic relief. However, do not rely on PAP alone to protect your heart or prevent death. You must still follow standard cardiovascular prevention guidelines, such as managing blood pressure, cholesterol, and using antiplatelet therapy if indicated.

The current evidence is inadequate to establish a causal role of arsenic in diabetes due to methodological limitations in epidemiologic studies and the use of non-physiological concentrations in experimental studies.

While high arsenic exposure is linked to higher diabetes rates in some regions, scientists cannot yet say for sure that arsenic causes diabetes. The existing studies have significant flaws, such as not measuring individual exposure accurately or using unrealistic doses in lab experiments. More research is needed to confirm a cause-and-effect relationship.

Skeletal muscle contains a novel FBN1+ fibro-adipogenic progenitor (FAP) subtype in humans, which is also present in mice and may contribute to heterotopic ossification.

This is a basic science finding. The FBN1+ FAP subtype may play a role in bone formation within muscle (heterotopic ossification) after injury.