cholesterol
Definition
- Noun:
- A waxy, fat-like substance: Cholesterol is a type of lipid (fat) that is found in all cells of the body.
- A specific animal sterol: It is a steroid alcohol (sterol) that is naturally produced by the liver in animals and is a crucial structural component of animal cell membranes.
Usage
Cholesterol is used to refer to this essential substance in biological contexts. It is often discussed in relation to health, diet, and medicine. - It is transported in the blood by lipoproteins (LDL and HDL). - High levels of certain types in the blood are a risk factor for heart disease.
Examples
- Noun:
- The doctor checked my cholesterol levels during my annual physical.
- Egg yolks contain dietary cholesterol.
- The body needs cholesterol to make hormones and vitamin D.
Advanced Usage
- "Serum cholesterol": The concentration of cholesterol in the blood.
- Her serum cholesterol was within the healthy range.
- "Cholesterol synthesis": The process by which the body produces cholesterol.
- Some medications inhibit cholesterol synthesis in the liver.
Variants and Related Words
- Cholesteryl (adj): Relating to or combined with cholesterol (e.g., cholesteryl ester).
- Hypercholesterolemia (n): The condition of having excessively high levels of cholesterol in the blood.
Synonyms
- Sterol: A general class of organic molecules to which cholesterol belongs.
- Lipid: A broad category of fat-soluble molecules, including cholesterol.
Related Phrases
- "Good cholesterol": Informal term for High-Density Lipoprotein (HDL), which helps remove cholesterol from arteries.
- "Bad cholesterol": Informal term for Low-Density Lipoprotein (LDL), which can build up in artery walls.
- "Cholesterol-free": A label for food products containing no dietary cholesterol.
Noun
-
an animal sterol that is normally synthesized by the liver; the most abundant steroid in animal tissues
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