A new study funded by the National Institute on Aging underlines the important contribution of biological age watches to the science of longevity. The researchers analyzed data from more than 3,500 participants aged 51 years and older to determine the link between epigenetic aging and age-related health outcomes. They found that second and third generation epigenetic clocks (GrimAge, PhenoAge, DunedInPace) consistently predicted health outcomes including cognitive impairment, functional limitations, chronic diseases, and mortality. According to NIA, the results of the study suggest that, in addition to traditional social and behavioral predictors of health, epigenetic age measurements are a valuable tool for aging research and predicting health outcomes later in life.