What is HDL (high-density lipoprotein) Cholesterol?
Lipoproteins, which are combinations of lipids (fats) and proteins, are the
form in which lipids are transported in the blood. The high-density lipoproteins
transport cholesterol from the tissues of the body to the liver so it can be
gotten rid of (in the bile). HDL cholesterol is therefore considered the
"good" cholesterol. The higher the HDL cholesterol level, the lower
the risk of coronary artery disease.
Even small increases in HDL cholesterol reduce the frequency of heart attacks. For each 1 mg/dl increase in HDL cholesterol there is a 2 to 4% reduction in the risk of coronary heart disease. Although there are no formal guidelines, proposed treatment goals for patients with low HDL cholesterol are to increase HDL cholesterol to above 35 mg/dl in men and 45 mg/dl in women with a family history of coronary heart disease; and to increase HDL cholesterol to approach 45 mg/dl in men and 55 mg/dl in women with known coronary heart disease.
The first step in increasing HDL cholesterol levels is life style
modification. Regular aerobic exercise, loss of excess weight (fat), and
cessation of cigarette smoking cigarettes will increase HDL cholesterol levels.
Moderate alcohol consumption (such as one drink a day) also raises HDL
cholesterol When life style modifications are insufficient, medications are
used. Medications that are effective in increasing HDL cholesterol include
nicotinic acid (niacin), gemfibrozil (Lopid), estrogen, and to a lesser extent,
the statin drugs.
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