Most foods contain all three types of fat, but in varying amounts.
Only saturated fats and dietary cholesterol raise blood cholesterol. A high level of cholesterol in the blood is a major risk factor for coronary heart disease, which leads to heart attack. Saturated fat intake should be limited to 7-10 percent of total calories each day. Polyunsaturated fat calories should be up to 10 percent of total calories. Monounsaturated fat intake should be up to 15 percent of total calories.