A community-based study in Olmsted County, Minnesota, has documented the distribution of myocardial infarction (MI) causes in patients younger than 65 years, showing significant sex differences.

Published in the Journal of the American College of Cardiology, the study analyzed 4116 troponin-positive events in 2780 patients between 2003 and 2018. Researchers found that 53% vs 25% of heart attacks in women vs men aged 65 years or younger were due to nonatherosclerotic causes.

https://www.medscape.com/viewarticle/more-than-half-heart-attacks-younger-women-have-2025a1000ob0