Epigenetic Signatures of Aging: From Cellular Senescence to Extended Lifespan

Aging is a complex biological process characterized by a gradual decline in physiological functions, increasing susceptibility to diseases such as cancer, cardiovascular conditions, and neurodegenerative disorders.Recent research highlights the role of epigenetic modifications-particularly DNA methylation, histone modifications, and chromatin remodelling-in regulating aging and genomic stability.Environmental factors, including diet and exercise, influence these epigenetic changes, offering potential interventions to mitigate age-related diseases.Epigenetic clocks, which predict biological age based on DNA methylation patterns, provide valuable insights into aging mechanisms and potential therapeutic targets.Additionally, emerging studies suggest that interventions such as dietary restriction, NAD+-boosting compounds, and histone deacetylase inhibitors may reverse or slow aging-related epigenetic alterations.The interplay between DNA damage and epigenetic regulation remains an active area of investigation, with implications for understanding neurodegeneration and cognitive decline.As research advances, epigenetic therapies present a promising avenue for extending healthspan and combating age-related diseases.