Egg yolks are perhaps the number one food high in cholesterol that should be avoided. The yolk of an egg contains more cholesterol than any other food. Egg whites are fine to eat. Butter is another food that should be eliminated from the diet because it is very unhealthy. Margarine is a good substitution for butter. Whenever possible, saturated oils should be avoided. Cheese is a high in cholesterol food that should not be included in the diet. Low-fat cheeses are the better choice. Fatty meats and shellfish such as steak, hamburger, ribs, roasts, clams, shrimp and oysters are high in cholesterol and should also be avoided.