Cholesterol

What it means

Cholesterol is a waxy, fat‑like substance that your body uses to make hormones, vitamin D, and bile. Your liver makes all the cholesterol you need. When you eat foods high in saturated fat or dietary cholesterol, your liver responds by making and circulating more cholesterol. Over time, too much cholesterol in the bloodstream get taken up by the artery walls and forms plaque.

Why it matters

High cholesterol, especially high LDL and Lp(a) cholesterol, is a major driver of plaque buildup in the arteries. This process is called atherosclerosis, and it increases the risk of heart attack and stroke. Cholesterol is also closely linked with fatty liver, insulin resistance, and bileproduction. When the liver is overloaded with fat, it makes more cholesterol and has a harder time clearing it.

What it means for you

Here's how this term shows up in real life. You'll see how it relates to your everyday habits, your lab results, and the small choices you make each day.

The goal isn't to memorize anything. It's to feel a little more confident the next time you see this word on a lab report or hear it at a doctor's visit.

One small action step

Here's one small, doable thing you can try this week. Just one step — not a checklist, not a project. Something simple that makes this term feel real and useful in your life.