Current AHA guidelines call for healthy Americans to bring LDL below 100 milligrams per deciliter (mg/dL) of blood, while ...

But for those who need to reduce the risk of a heart attack or stroke, statin drugs lower the level of "bad" cholesterol (low-density lipo­protein, or LDL) in the blood by blocking a liver enzyme ...

The most common are statins, which block an enzyme the liver needs ... instead of taking medications. What if your elevated cholesterol levels don't drop despite your best efforts?