HDL molecule rotation


Image Caption : There are two main types of cholesterol particles found in the bloodstream: HDL (high-density lipoprotein); and LDL (low-density lipoprotein). HDL is referred to as "good" cholesterol because it can pick up excess cholesterol in the bloodstream and carry it to the liver for disposal. In this way, higher levels of HDL can decrease a person`s risk of developing the artery-clogging plaques of atherosclerosis.

What is HDL (high-density lipoprotein) Test?

There are two main types of cholesterol particles found in the bloodstream: HDL (high-density lipoprotein); and LDL (low-density lipoprotein). HDL is referred to as "good" cholesterol because it can pick up excess cholesterol in the bloodstream and carry it to the liver for disposal. In this way, higher levels of HDL can decrease a person's risk of developing the artery-clogging plaques of atherosclerosis.

Why Test for HDL (high-density lipoprotein)?

A lipoprotein (from the Greek lipos, for fat) is a fat-and-protein package that enables fats and cholesterol to move freely within the bloodstream (fats and blood, like oil and water, do not mix). Proteins and other components make up the outer shell of the lipoprotein; cholesterol and other fats are packed together inside. The size and density of the lipoprotein determines whether it is classified as "good"or "bad." Low-density lipoproteins (LDL) are larger, lighter, and fluffier; high-density lipoproteins (HDL) are small and dense. LDL cholesterol, HDL cholesterol and other lipid components contribute to your total blood cholesterol value.

Demographic

Low HDL levels are not treated with medication, though drugs that lower LDL may raise HDL. Lifestyle changes, however, do boost HDL levels. Quitting a smoking habit can increase HDL. Exercise is another way to increase HDL levels. Moderate alcohol consumption (1 to 2 drinks per day) can increase HDL, but even small amounts of alcohol can also increase triglyceride levels; because there are other reasons that many people should not drink alcohol, increasing alcohol intake to raise HDL is not recommended.

HDL Cholesterol

Cholesterol which is contained in or bound to high-density lipoproteins (HDL), including CHOLESTEROL ESTERS and free cholesterol.

National Center for Biotechnology Information, U.S. National Library of Medicine



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