How are Cortisol and Langlebigkeit related?

Cortisol, the primary stress hormone, is linked to longevity through several pathways: chronic elevation promotes inflammation, oxidative stress, telomere shortening, and insulin resistance – all accelerators of biological aging. Conversely, effective stress regulation may support healthy aging. However, the genetic component, often highlighted via COMT Val158Met or BDNF Val66Met, is frequently overstated. Large GWAS indicate that these candidate gene variants have very small, non-replicated effects on stress resilience. Individual stress levels are shaped far more by lifestyle, environment, and psychosocial factors than by such SNPs. Consumer DNA tests labeling people as 'worriers' or 'warriors' lack clinical actionability. Similarly, single cortisol measurements from home blood tests (e.g., Men's Wellness Check) are unreliable for assessing chronic stress or longevity risk. For a robust evaluation, clinical tools like diurnal cortisol profiles, inflammatory markers (hsCRP), and telomere length are more informative. In summary, the cortisol-longevity link is mechanistically plausible but not reliably captured by current consumer genetics or single-point hormone tests. Evidence remains at the mechanistic/unclear level. Lifestyle interventions – sleep, exercise, stress management – are the most evidence-based strategies.