Yes, it is possible to have had a heart attack and not be aware of it. A heart attack does not always have the classic symptoms that are commonly portrayed in media, such as severe pain in the chest, shortness of breath, and cold sweats. Some individuals may experience mild or atypical symptoms, or even no symptoms at all. This type of event is known as a silent heart attack, or medically termed as silent ischemia, which is a condition where there is a lack of oxygen to the heart muscle. Silent heart attacks can be detected later through tests such as electrocardiograms (ECGs) that reveal changes in the heart's rhythm or structure, or through the detection of heart damage markers in the blood. read more >>

A heart attack does not always have obvious symptoms, such as pain in your chest, shortness of breath and cold sweats. In fact, a heart attack can actually happen without a person knowing it. It is called a silent heart attack, or medically referred to as silent ischemia (lack of oxygen) to the heart muscle.read more >>