Role of High Blood Cholesterol

Over 25 percent of American women have blood cholesterol levels high enough to put them at risk for heart disease. Cholesterol is a waxy substance found in all parts of the body. It makes cell membranes, some hormones, and Vitamin D. Cholesterol comes from two sources: your body and the food you eat. Your liver makes all the cholesterol your body needs. Eating too much cholesterol in animal foods like meats, whole milk dairy products, egg yolks, poultry, and fish can make your cholesterol go up. However, saturated fat in your diet is the main culprit that causes your cholesterol to rise.

Cholesterol travels through the blood in packages called lipoproteins. Low density lipoprotein (LDL) and high density lipoprotein (HDL) are two types of lipoproteins. LDL is often called the "bad" type of cholesterol because it can cause buildup and blockage in the arteries that carry blood to your heart. HDL is known as "good" cholesterol because it helps remove cholesterol from the blood, preventing buildup and blockage in the arteries. The higher your cholesterol, the greater your risk for heart disease.

From the time women turn 20 years old, their blood cholesterol levels start to rise. From age 40, they rise sharply and increase until about age 60. Being overweight and physically inactive also can raise your level of bad (LDL) cholesterol and lower your level of good (HDL) cholesterol. Family history (genes) can also affect how your body makes and handles cholesterol. All women age 20 and over need to have their blood cholesterol checked. High blood cholesterol is an important risk factor for heart disease that you can help control with diet, exercise (which will increase HDL and lower LDL), and quitting smoking. In some cases, your health care provider might prescribe cholesterol-lowering medication.