Cholesterol: The Molecule Everyone Loves to Blame

Why Your Body Needs It and When It Becomes Dangerous

Cholesterol has spent decades being treated like a villain.

But your body makes it on purpose.

You need cholesterol to build cell membranes, produce steroid hormones, make bile acids, and support normal human biology. So why is it also so closely tied to heart attacks and strokes?

In Episode 2 of Inside Your Biology, we go inside the bloodstream to separate cholesterol itself from the particles that carry it.

We break down LDL, HDL, triglycerides, apoB, remnant particles, Lp(a), and the difference between cholesterol concentration and particle number. Then we follow those particles into the artery wall to understand how atherosclerosis actually develops.

We also examine some of the biggest arguments in modern health:

Is LDL really “bad cholesterol”? Is apoB more important than LDL-C? Can high HDL cancel out high LDL? Does eating cholesterol raise cardiovascular risk? Are large LDL particles harmless? What role does inflammation play? And do cholesterol-lowering drugs merely change lab numbers—or do they change real cardiovascular outcomes?