This document summarizes the epidemiology and prevalence of myocardial infarction (MI), also known as a heart attack. MI is most commonly caused by ischemic heart disease and can result from uncontrolled angina pectoris leading to ischemia. Risk factors include modifiable factors like smoking, obesity, hypertension, hyperlipidemia, and diabetes, as well as unmodified factors like age, gender, and family history. The morbidity and mortality rates of coronary artery disease and MI have been increasing worldwide and in developing countries. Every year over 735,000 Americans experience a heart attack, with 10% occurring before age 40 and 1 in 6 US deaths due to MI. A 2017 Saudi Arabian study found that half of participants had 3 or more risk