This is cholesterol. Its job is to keep your cells from bursting open. It cannot travel through the bloodstream on its own so it rides on LDL and HDL.

This is LDL (low density lipoprotein). Its job is to carry cholesterol to your cells to be used.

This is HDL (high density lipoprotein). Its job is to carry extra cholesterol to the liver to be removed.

This is triglyceride. Its job is to store extra energy so the body can use it later.