Cholesterol metabolism - Homo sapiens (human)

Cholesterol is an essential component of mammalian cell membranes as well as a precursor of bile acids, vitamin D and steroid hormones. Cholesterol homeostasis in humans is regulated by well-balanced mechanisms of intestinal uptake, endogenous synthesis, transport in lipoprotein particles, and biliary excretion. Its abnormal metabolism can lead to increased risk for various endocrine disorders and cardiovascular diseases.