Telomere length, genetics, aging, and health

What are telomeres and how are they related to aging? Telomeres are protective “caps” on chromosomes that get shorter as we get older. The length of telomeres may indicate “biological aging.” Biological aging, in contrast to actual aging, or how many years someone has lived, refers to the fact that the aging process is very different for each of us. These differences are based on genes, various diseases people may develop over time, and different types of environmental exposures and trauma experienced in one’s lifetime.

Shorter telomeres have been linked to many age-related conditions, but most prior studies have focused on people of European ancestry. We still don’t fully understand how genetics, lifestyle, and social and neighborhood characteristics interact to shape telomere length and disease risk in people from different ancestries.

Using data from the Kaiser Permanente Research Bank, scientists will study how these different factors are linked to telomere length, which will clarify how various social and biological forces influence aging. This study could help create important scientific information that supports future research on specific health conditions and diseases. For example, patients and their families may benefit from learning information about disease risk and prevention that is more specific to them and their background. Clinicians and health systems may be able to use findings to improve screening and counseling for people from different ancestries. Researchers will gain clearer evidence about the pathways linking aging, environment, and genetics. Policymakers and public health leaders may use results to design more equitable, community-focused strategies. Ultimately, this work aims to reduce health disparities and improve aging outcomes for people of all backgrounds.