Northwestern University Jul 30 2025 Most U.S. adults have a "heart age" several years older than their chronological age - sometimes by more than a decade. And that gap is wider among men and among those with lower incomes or education or who identify as Black or Hispanic, according to a new study led by Northwestern Medicine. As part of the study, the Northwestern scientists created a free online tool that calculates a person's "heart age" based on their risk for cardiovascular disease, using