What does it mean when total cholesterol is elevated?

High total cholesterol refers to cholesterol levels in the blood exceeding the normal range, which may increase the risk of developing cardiovascular diseases. Cholesterol is a type of lipid substance, classified into high-density lipoprotein (HDL), low-density lipoprotein (LDL), and very low-density lipoprotein (VLDL), etc. Among these, HDL is considered "good" cholesterol as it helps remove cholesterol from the bloodstream, while LDL and VLDL are considered "bad" cholesterol, which can deposit on blood vessel walls when present in excessive amounts, forming atherosclerotic plaques and increasing the risk of heart disease and stroke. Elevated total cholesterol is usually caused by multiple factors, including unhealthy dietary habits, lack of physical activity, obesity, smoking, alcohol consumption, and genetic factors. To lower total cholesterol, it is recommended to adopt a healthy lifestyle, such as eating a low-fat, low-cholesterol diet, increasing physical activity, quitting smoking, limiting alcohol consumption, and maintaining a healthy weight. If total cholesterol remains persistently high despite lifestyle modifications, cholesterol-lowering medications may be required under the guidance of a physician.