Cholesterol

Definition

Cholesterol is a type of lipid that is crucial for all animal life. It's an integral component of cell membranes and serves as a precursor for the biosynthesis of steroid hormones, bile acid, and vitamin D.

Related terms

Lipoproteins: These are biochemical assemblies whose primary purpose is to transport hydrophobic lipid molecules in water using proteins as carriers.

LDL (Low-Density Lipoprotein): Often referred to as 'bad cholesterol', it transports cholesterol from the liver to cells around the body where it can build up on artery walls leading to heart disease.

HDL (High-Density Lipoprotein): Known as 'good cholesterol', it carries excess cholesterol back to your liver where it's broken down and removed from the body, thus preventing plaque buildup in your arteries.