The rest is manufactured by the body, in the liver. Smoking, lack of physical activity, excess body weight, stress and family history also have an effect on blood cholesterol levels. In the blood, there are two kinds of cholesterol. A high level of HDL cholesterol seems to protect against heart disease. A high level of LDL cholesterol is a signal that heart disease may be present.
Organ meats are very high in cholesterol.
Fruits, vegetables, grains, nuts, margarine, and vegetable oils do not contain cholesterol. All dietary fats are made up of saturated and unsaturated fatty acids. The amount of fat in the diet affects blood cholesterol levels. This is especially true for some types of fat. Saturated Fatty Acids are usually solid at room temperature.