Abnormal levels of low-density lipoprotein cholesterol, also known as the "bad" kind of cholesterol, …can more than double the risk of heart attacks and strokes.<br />According to a study by Pusan National University on nearly 70-thousand patients with high cholesterol levels, …the incidence of such disorders in those specifically with high LDL cholesterol was 24-point-three per 100 person-years ...compared with 11-point-nine per 100 person-years in people with normal levels of LDL cholesterol.<br />People who have experienced heart attacks or strokes are advised to lower their LDL cholesterol to 70 milligrams per deciliter. <br />