The functions of cholesterol are as follows -

• Cholesterol is necessary for the formation and maintenance of cell membranes (helps the cell to resist changes in temperature and protects and insulates nerve fibers).
• It is involved in the production of sex hormones (estrogen and androgens).
• It is essential for the production of hormones released by the adrenal glands (cortisol, corticosterone, aldosterone and others).
• It is necessary for production of bile, which help to digest food.
• It is important for synthesis of vitamin D.
• It plays a vital role in the metabolism of the fat soluble-vitamins A, D, E and K.