Take the Cholesterol Quiz

Cholesterol is a soft, waxy substance found in all parts of the body. It helps form cell membranes and is involved in the production of some hormones and vitamin D. Excess cholesterol can build up in the arteries, narrowing them and slowing or blocking blood flow to the heart, brain, and other organs.

1. Anyone who is 20 or older should have a cholesterol check:
2. A complete lipid screening obtained after fasting for eight hours measures:
3. Low-density lipoprotein (LDL) is called "bad" cholesterol because:
4. High-density lipoprotein (HDL) is called "good" cholesterol because:
5. A diet that helps keep blood cholesterol levels in check includes:
6. How can exercise help blood cholesterol levels?
7. Besides high cholesterol, which of these is a major risk factor for heart disease?
8. How is high cholesterol treated?
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Your Guide to Cholesterol


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Although people have sworn by garlic's medicinal benefits, new research puts to rest the notion that the herb can reduce LDL ("bad") cholesterol levels. A large clinical trial published in a 2007 issue of the Archives of Internal Medicine found no evidence that garlic worked to lower cholesterol. The study looked at both fresh garlic and garlic supplements.