Low-density lipoprotein (LDL)

Cholesterol moves around a person’s body via lipoproteins in their bloodstream. There are two types in the blood: LDL cholesterol and high-density lipoprotein (HDL) cholesterol. Some people may refer to LDL as “bad” cholesterol and HDL as “good” cholesterol.

Too much LDL cholesterol in the blood causes plaque to buildup in the arteries, which reduces blood flow. These plaque deposits sometimes rupture and lead to major heart and blood vessel problems.

Experts recommend testing every 4 to 6 years. You’ll probably need it more often if you have heart disease or diabetes, or if high cholesterol runs in your family. Lower numbers are better when it comes to LDL cholesterol test results.