Home > Cholesterol > What is Cholesterol? Get the Flash Player to see this player. Rate: (Click the stars to rate) Published on Oct 05, 2008 by SRBergmann, Views: 6851 Cholesterol is produced in the liver. High cholesterol is very common with the American diet. Cholesterol becomes elevated with a high fat, high cholesterol diet, but can be high in people with a lower fat diet, who produce too much cholesterol in the liver. Dr. Steven Bergmann, the Chief of Cardiology at Beth Israel Med. Ctr., explains what is cholesterol.