Abderrahman HA, et al. - Using autopsy reports data that were issued at Jordan University Hospital, researchers evaluated age-related differences in the distribution of coronary atherosclerotic and myocardial lesions and determined the age threshold at which such differences became apparent in male deaths. As per outcomes, the “turn-interval” (age group between 50/54) was considered as the scientific basis to define the age threshold that differentiates the premature atherosclerotic coronary diseases. Hence, they proposed that male premature coronary artery diseases comprised the cases suffering from the heart attack, or died as a result of cardiac attacks below the age of 49, and the mature disease that affects people who are older than 54 years old.