The largest study of its kind reports that married people are less likely to suffer from a range of cardiovascular problems, from heart disease to stroke to circulatory issues. In an analysis of data on more than 3.5 million Americans, average age 64, whod undergone health screenings by a private company, married people were 5% less likely to have cardiovascular problems than singles. Compared to married participants, widowed people were at 3% greater risk and divorced people at 5% more risk. The correlation between marital status and cardiovascular health was strongest for those under age 50. It might be that if someone is married, they have a spouse who encourages them to take better care of themselves, said researcher Jeffrey Berger, MD, of NYU, who cautioned, We cant by any means prove cause and effect. The findings were presented at the American College of Cardiology annual meeting.