hdl
Definition
Noun: A type of lipoprotein that carries cholesterol from the body's tissues back to the liver for processing or removal. It is characterized by a high density due to its high proportion of protein relative to its cholesterol and fat content. Elevated levels of this substance in the blood are considered beneficial and are associated with a lower risk of cardiovascular diseases.
Usage
HDL is used primarily in medical, biological, and health contexts to discuss blood chemistry, cholesterol, and heart disease risk. - It is often contrasted with LDL (low-density lipoprotein). - It is commonly referred to as "good cholesterol."
Examples
- A blood test showed her HDL level was excellent.
- Regular exercise can help raise your HDL.
- Doctors monitor the ratio of HDL to total cholesterol.
Advanced Usage
- HDL cholesterol: The cholesterol carried by HDL particles.
- The focus should be on increasing your HDL cholesterol.
- HDL level / HDL count: A measurement of HDL concentration in the blood.
- His HDL level is a key factor in his low cardiac risk.
Variants and Related Words
- High-density lipoprotein: The full, formal name for HDL.
- LDL (Low-density lipoprotein): Often called "bad cholesterol," it carries cholesterol to tissues and arteries.
- Lipoprotein: The broader category of particles that transport lipids (fats) in the bloodstream.
Synonyms
- Good cholesterol: The common, non-technical synonym.
- Alpha-lipoprotein: An older, less common technical term.
Related Phrases
- HDL/LDL ratio: A comparison of the two lipoprotein levels used to assess cardiovascular risk.
- A favorable HDL/LDL ratio is important for heart health.
- To boost/raise HDL: To increase the level of HDL through lifestyle or medication.
- Certain dietary fats can help raise HDL.
Noun
-
a lipoprotein that transports cholesterol in the blood; composed of a high proportion of protein and relatively little cholesterol; high levels are thought to be associated with decreased risk of coronary heart disease and atherosclerosis
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