Cholesterol is a fatty substance (lipid) that is part of the outer membrane of cells in the animal body. It is also found in human blood circulation. Two main sources of cholesterol in the blood obtained from the diet and liver production.
Cholesterol diet comes from meat, poultry, fish and dairy products. After a meal, cholesterol is absorbed by the intestine into the bloodstream and is covered by protein. Cholesterol-coated protein called chylomicron ni.

