What is the most common cause of heart attacks?

The most common cause of heart attacks is coronary artery disease (CAD). This condition occurs when the coronary arteries that supply blood to the heart muscle become narrowed or blocked due to a buildup of fatty deposits (atherosclerosis). This restriction in blood flow can lead to ischemia, where the heart muscle does not receive enough oxygen, ultimately causing a heart attack.

As CAD progresses, it can precipitate various events, such as a plaque rupture, which may lead to clot formation. The thrombus can further occlude the artery, preventing blood from reaching the affected part of the heart muscle, resulting in myocardial infarction. Given the prevalence of CAD in the general population and its established connection to heart attacks, it is recognized as the leading cause in numerous studies and healthcare analyses.

Other potential causes of heart attacks, such as severe dehydration, aortic dissection, and heart valve diseases, are less common. Severe dehydration can lead to electrolyte imbalances and diminished blood volume, potentially impacting heart function, but it is not a direct cause of heart attacks like CAD is. Aortic dissection, while serious, primarily affects the integrity of the aorta and is not as prevalent as CAD. Heart valve diseases can contribute to heart failure but are not a primary cause