Updated August 11, 2008.

Definition:

Lipid is a general term for naturally occuring fats found in the body.

There are many different types of lipids including cholesterol and triglycerides.

HDL (good cholesterol) and LDL (bad cholesterol) are both lipids, as are saturated, unsaturated, and trans-fats.

Lipids are involved in many body functions including the synthesis of new cells and the production of many hormones.