Cholesterol is an important indicator of lipid assay. Normally, the body takes in cholesterol from food and synthesizes it in the liver, so cholesterol lowering is related to both: i. Reduced intake from food: Although cholesterol is mostly synthesized by the body itself, when the intake is extremely low, it can also lower cholesterol, and experts recommend a daily cholesterol intake of 50-300mg; ii. Abnormal liver function: Cholesterol mainly comes from the uptake and synthesis of the liver, when the liver is dysfunctional, the liver cannot synthesize cholesterol normally, which is the main reason for the lowering of cholesterol in the body, mostly seen in liver diseases, such as cirrhosis, liver failure, fatty liver, liver cancer, but also in some metabolic diseases such as diabetes and hypothyroidism.