Did you know that you could get a heart attack without having a family history? Yes. According to a new study lifestyle factors and not genetic factors are mainly responsible for heart attacks. It was previously believed that heart attack is closely related to coronary heart disease which is the reason why someone who is suffering from CHD would be considered prone to an attack. However research team at the Intermountain Medical Center Heart Institute in Salt Lake City found that while severe CHD can be inherited heart attacks could occur in people with less severe coronary disease that was