Increased LDL cholesterol refers to the elevation of bad cholesterol, or LDL cholesterol, in blood lipids. For cholesterol, it can be divided into good cholesterol and bad cholesterol, where the good cholesterol refers to HDL cholesterol, which helps stabilize the lipid profile. LDL cholesterol belongs to bad cholesterol, which tends to make atherosclerotic diseases occur and develop, thus causing corresponding complications, such as cardiovascular complications, which can lead to coronary heart disease, angina pectoris, and myocardial infarction. In addition, cerebrovascular disease can cause hemorrhagic stroke and ischemic stroke, and renal artery can cause renal artery atherosclerosis and stenosis, as well as lower limb artery atherosclerosis and stenosis, causing intermittent claudication of the lower limbs.