New research using CLSA data is offering new insight into the biological processes that influence the development of frailty as we age.
The study draws on data from more than 23,000 CLSA participants from across Canada and identifies a previously unrecognized region of the genome linked to frailty outcomes. Along with nearby genes linked to immune response and brain function, these findings highlight how small variations in DNA—alongside everyday factors such as lifestyle, health, and environment—can shape different aging experiences.
“This research gives us new biological clues into why frailty develops. We identified a genetic region that has never been linked to frailty before. Understanding these pathways, in both the immune system and the brain, opens the door to earlier screening and potentially more personalized approaches to supporting healthy aging,” says Sayem Borhan, lead author and assistant professor in the Department of Health Research Methods, Evidence and Impact at McMaster University.
By identifying genetic factors linked to frailty, the study brings greater clarity to why experiences of aging can differ. Leveraging the large-scale CLSA data set to identify biological pathways to different aging outcomes, these findings support earlier identification of risk factors and tailored approaches to maintaining health and function. Future work will focus on validating the results and translating them into practical screening and prevention tools.
