Normal reference range of total cholesterol: 2.83~5.20mmol/L. Long-term elevation of total cholesterol will have certain effects on the body, which may lead to atherosclerosis, xanthomas and early-onset keratoconus rings, and blood viscosity. 1. Atherosclerosis: Cholesterol and other lipids will be deposited under the endothelium of arterial vessels, causing early onset and rapid progress of cardiovascular and cerebrovascular diseases and peripheral vascular disease, and severe hypercholesterolemia may sometimes appear as wandering polyarthritis. 2. Yellow tumor and early-onset corneal ring: the blood cholesterol content is too high, lipid deposition on the surface of the skin to form yellow tumor, the most common place is around the eyelids. Early-onset corneal rings are mostly found below 40 years old and are often accompanied by dyslipidemia. 3. Sticky blood: After the total cholesterol is elevated, the blood will become sticky and the circulation will be affected, which will not only lead to dizziness, chest tightness and other discomforts, but also increase the incidence of thrombotic diseases. When total cholesterol is elevated, you should consult a doctor and adjust your diet or medication under the doctor’s guidance.