Cholesterol is an essential lipid molecule that plays vital roles in the body, including cell membrane structure, hormone synthesis, and bile acid production. While high cholesterol levels are often associated with increased cardiovascular risk, lower than normal levels of cholesterol can also have implications for health. An impaired cholesterol balance is associated with impaired immune function, loss of libido, menstrual irregularities, mood changes and certain neurological impairments. The supplements in this category may improve or ensure proper cholesterol levels.