― ∙ What is cholesterol? ∙ Essentially, high cholesterol means the cholesterol in the blood is too high, which increases your risk of heart disease. To learn more about high cholesterol, see when cholesterol is it considered too high? and Setting Goals. ∙ Where does cholesterol stays? ∙ The liver manufactures about 80% of the cholesterol found in blood, the rest from our diet. ∙ Many foods contain small amounts of cholesterol, but the data suggest that saturated [...].