By Vijay Kumar Malesu Reviewed by Lauren Hardaker Feb 2 2026 Researchers track heart disease from young adulthood to uncover when sex-based risk differences first emerge. Study: Sex Differences in Age of Onset of Premature Cardiovascular Disease and Subtypes: The Coronary Artery Risk Development in Young Adults Study. Image credit: Pixel-Shot/Shutterstock.com In a recent study published in the Journal of the American Heart Associatio n , a group of researchers examined sex-based differences in