Total Cholesterol

Cholesterol is a waxy material your body needs to build cell walls, hormones, vitamin D, and the bile acids that help you digest food. Your liver makes most of it, and a little more comes from what you eat.

It can't dissolve in blood, so it rides inside particles. LDL, the "bad" carrier, drops cholesterol off at your tissues. HDL, the "good" carrier, ferries the extra back to your liver. Your total adds up the cholesterol across all of them.

Your total tells you roughly how much cholesterol is circulating, and it's a number you can move. When more circulates than your body uses, the surplus can settle into artery walls as plaque, and over years that nudges up the risk of heart attack and stroke.

But the number can mislead. A high reading driven by protective HDL reads very differently from one driven by LDL, so treat it as a starting point, not a verdict. The upside: diet, movement, and weight can shift it, and it's best read as one clue alongside your LDL, HDL, and triglycerides with your clinician.