Browse the evidence

Vegetarian and vegan diets are associated with a significantly higher risk of haemorrhagic and total stroke compared to meat-eating diets, an association that is not explained by standard cardiovascular risk factors.

While vegetarian diets lower heart disease risk, they are associated with a higher risk of stroke, particularly haemorrhagic stroke. This risk is not explained by standard factors like blood pressure or cholesterol. Vegetarians should ensure a balanced diet, potentially paying attention to nutrients like Vitamin K and B12, and consult healthcare providers for personalized advice.

Metabolomic age acceleration (mAA) and DNA methylation age acceleration (DNAmAA) capture distinct aspects of the aging process, as they are uncorrelated with each other despite both being associated with different risk factors.

Relying on just one 'biological age' test might give you an incomplete picture. This research suggests that metabolic health (blood/urine markers) and genetic expression (DNA methylation) track aging differently. To truly understand your aging trajectory, you might need to look at multiple health indicators rather than relying on a single metric.

Higher abundance of bacterial L-methionine biosynthesis pathways is associated with increased presence of carotid plaque and maximum stenosis (atherosclerosis) in obese individuals.

In obese individuals, specific gut bacteria that produce L-methionine are linked to higher atherosclerosis risk. While this study is observational, it suggests that managing gut microbiome composition (potentially through diet) may be relevant to cardiovascular health, particularly in those with obesity. Focus on fiber-rich diets that support diverse microbiota.

Higher abundance of Ruminococcus sp_5_1_39BFAA is positively associated with hepatic fat content (liver fat) in obese individuals.

In obese individuals, higher levels of a specific gut bacterium (Ruminococcus sp_5_1_39BFAA) are linked to more liver fat. This highlights the importance of gut health in metabolic management. Strategies to support a healthy microbiome (e.g., diverse plant fibers) may indirectly support liver health.

Genetic variants, particularly PNPLA3 (rs738409 C>G), are strongly associated with liver steatosis and progression of liver damage, independent of insulin sensitivity and BMI.

If you have a family history of fatty liver, you may have genetic risks. Regular monitoring and healthy lifestyle choices are still important to manage the risk.

Quantitative molecular and phenotypic biomarkers (e.g., DNA methylation, telomere length, physical function) can accurately measure physiological age and predict healthspan and lifespan.

Use available biomarkers (like blood tests or physical function metrics) to track your biological age rather than just your calendar age. This helps you assess your 'healthy aging' status and potentially predict your healthspan, allowing for earlier interventions to prevent age-associated diseases.

Integrating multiple biomarkers (molecular and phenotypic) using statistical or machine learning algorithms provides a more powerful prediction of physiological age than single biomarkers.

For the most accurate assessment of your biological age, use integrated panels that combine multiple blood tests and physical metrics, analyzed by advanced algorithms, rather than relying on a single test.

Metabolic syndrome prevalence in Indian adults is 30%, with significantly higher rates in females (35%) compared to males (26%), and in urban residents (32%) compared to rural (22%) and tribal (28%) populations.

If you are an adult in India, your risk of metabolic syndrome is about 1 in 3. Women and city dwellers face a higher risk. Regular screening for blood pressure, blood sugar, and cholesterol is crucial, especially if you live in an urban area or are female.

Higher personal economic status is associated with specific gut microbiota shifts (increased Bacteroides, decreased Prevotella) that do not necessarily correlate with increased metabolic syndrome risk, indicating that economic status alone does not predict dysbiosis.

Do not assume that moving to a higher economic bracket automatically worsens your gut health. This study shows that higher income was associated with a microbiome profile that was *not* more dysbiotic. Focus on maintaining physical activity to prevent MetS, as diet quality may actually improve with income.

Long-term instability of the intestinal microbiome is significantly associated with metabolic liver disease (FLD) and diabetes mellitus, characterized by an increase in facultative pathogens like Enterobacteriaceae and Escherichia/Shigella.

If you have metabolic liver disease or diabetes, your gut microbiome is likely less stable and may harbor more opportunistic pathogens. This instability is a marker of metabolic health rather than just a random fluctuation. Managing metabolic health may be key to maintaining microbiome stability.

High initial alpha diversity, female sex, high household income, and preserved exocrine pancreatic function are associated with the greatest stability of the faecal microbiota over a 5-year period.

Maintaining high microbial diversity and pancreatic health may help keep your gut microbiome stable. While you cannot change your sex or income, focusing on metabolic health and avoiding factors that reduce diversity (like unnecessary antibiotics) may support stability.

Microbiota instability and metabolic diseases like FLD and diabetes are linked to an increased predicted microbial potential for lipopolysaccharide (LPS) biosynthesis, which may trigger proinflammatory cytokines and aggravate metabolic disorders.

An unstable gut microbiome in the context of metabolic disease may lead to higher levels of bacterial components (LPS) that trigger inflammation. This suggests that managing gut health could potentially reduce inflammatory burden in metabolic disorders.

Mitochondrial dysfunction during aging leads to the release of mitochondrial DAMPs (specifically cell-free mtDNA and TFAM), which trigger sterile inflammation via TLR, NLRP3, and cGAS-STING pathways, thereby driving 'inflamm-aging'.

Focus on maintaining mitochondrial health through regular physical activity, particularly resistance and endurance training, which supports mitochondrial biogenesis and quality control. This helps reduce the release of inflammatory mitochondrial DNA fragments into the bloodstream, potentially lowering chronic age-related inflammation.

DNA methylation patterns change dynamically throughout the lifespan, serving as a molecular marker for monitoring aging and predicting life expectancy, although the underlying causal mechanisms remain largely undiscovered.

Your DNA methylation patterns are not fixed; they change with age and environment. While we cannot yet reverse aging via methylation, tracking these changes (biological age) may offer insights into health status. Lifestyle factors like physical activity and diet influence these patterns, suggesting that maintaining a healthy lifestyle may positively impact your epigenetic profile.

Sarcopenia predicts significantly worse long-term overall survival (1, 3, and 5 years) and disease-free survival following abdominal surgery for malignancy.

For cancer patients undergoing abdominal surgery, muscle mass is a key prognostic factor. If your scans show sarcopenia, engage in prehabilitation focusing on resistance training and protein intake to potentially improve your long-term survival and disease-free outcomes.

Nutrients-to-limit reformulation of ultra-processed foods fails to improve health outcomes because it enables mal-substitution of ingredients and legitimizes continued high consumption of ultra-processed products.

Do not rely on 'reformulated' or 'low-fat/low-sugar' labels to judge the healthiness of packaged foods. These products are often still ultra-processed and may contain other harmful additives or substitutes. Focus on consuming minimally processed foods instead of trying to optimize the nutrient profile of industrial products.

Non-Hispanic Black and Mexican-American women exhibit significantly lower cardiovascular health (CVH) scores compared to Non-Hispanic White women, with these disparities persisting unchanged from 1999 to 2012.

For Non-Hispanic Black and Mexican-American women, cardiovascular health scores remain significantly lower than those of Non-Hispanic White women. This gap has not closed between 1999 and 2012. Focus on the 7 key metrics: diet, physical activity, smoking, BMI, blood pressure, blood glucose, and cholesterol. Culturally competent prevention strategies are essential to address these persistent gaps.

Relocating from Latin America to the USA during early life (before age 18) causes a persistent reduction in the Prevotella to Bacteroides ratio and lower fungal alpha diversity, whereas late-life relocation (after age 45) is associated with high bacterial and fungal diversity and high Prevotella to Bacteroides ratios.

If you moved to the US from Latin America as a child, your microbiome likely adapted to a Western diet early on, resulting in lower fungal diversity and a lower P:B ratio. If you moved as an adult, your microbiome may retain more features of your country of origin (higher diversity, higher P:B ratio). To improve your microbiome, focus on dietary acculturation: increasing fiber, whole grains, and vegetables while reducing red meat and trans fats can help shift your microbiome toward a healthier profile, regardless of when you moved.

Mitochondrial dysfunction and elevated ROS production drive lipid peroxidation, which contributes to biological aging and age-related diseases.

Focus on maintaining mitochondrial health through lifestyle factors that support energy metabolism and reduce oxidative stress, as these are key drivers of aging and age-related diseases.

Obesity is associated with significantly lower gut microbiota diversity and distinct taxonomic shifts, including decreased Akkermansia and increased Acidaminococcus, independent of dietary intake.

Your gut bacteria differ between normal weight and obese states, with obese individuals showing less diversity and specific bacterial shifts (like lower Akkermansia). This suggests that microbiota composition is a biological factor in obesity, independent of just what you eat. While this doesn't prescribe a specific treatment, it highlights that gut health is a key area of interest in obesity research.

In vitro digestion using the INFOGEST protocol demonstrates that intact proteins from diverse sources (whey, collagen, zein, legumes, cereals) are fully hydrolyzed during the intestinal phase, although digestion-resistant peptides persist in all substrates.

When you eat protein from any source (meat, dairy, beans, grains), your digestive system breaks down the large protein structures into smaller peptides during the intestinal phase. While some resistant peptides remain, the large intact proteins are gone. This suggests that digestive capability is not the primary limiting factor for plant vs. animal protein absorption in a healthy gut.

For individuals consuming a balanced diet, calcium and vitamin D supplementation provides little to no beneficial or detrimental effect on fracture prevention.

If you eat a balanced diet and are not on osteoporosis medication, you likely do not need calcium or vitamin D supplements for fracture prevention. Focus on getting these nutrients from food. If you are on medication or have a deficiency, your doctor may recommend specific doses.

Cellular senescence drives inflammaging through the secretion of the Senescence-Associated Secretory Phenotype (SASP), which promotes chronic sterile inflammation and age-related pathologies.

Aging is associated with the accumulation of 'zombie' cells (senescent cells) that secrete inflammatory signals (SASP). This chronic inflammation contributes to many age-related diseases. While senolytics (drugs that kill these cells) are being developed, current evidence supports lifestyle factors like physical activity, which improves mitochondrial function and may help manage inflammation.

Mitochondrial dysfunction, specifically the release of mitochondrial DAMPs (mtDAMPs) like oxidized mtDNA and cardiolipin, activates innate immune pathways (NLRP3, cGAS/STING, NF-κB) to drive inflammaging.

Mitochondrial health is crucial for managing inflammation. Impaired mitochondria release signals that trigger chronic inflammation. Physical activity improves mitochondrial function and may help reduce this inflammatory burden.