Having close relatives with heart disease at younger ages (heart disease diagnosed before age 55 in a father or brother or before age 65 in a mother or sister).
If a person has risk factors for heart disease, it does not necessarily mean that he or she will get heart disease. Many people with risk factors never develop heart disease, while people with no risk factors can develop it.
(Click Heart Disease Risk to calculate your risk for heart disease over the next 10 years.)