American Heart Association Apr 17 2025 Adults younger than 50 years of age had more than double the risk of having a stroke from migraine or other nontraditional stroke risk factors rather than traditional risks such as high blood pressure, according to research published today in  Stroke , the peer-reviewed scientific journal of the American Stroke Association, a division of the American Heart Association. Previous research indicates the rate of ischemic (clot-caused) stroke among adults 18-49