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Cholesterol
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Cholesterol
Cholesterol is a fatlike substance found in every
cell of the body. Everyone has cholesterol, but people who eat
excessive amounts of fat may have high levels of cholesterol in
their blood. There the excess cholesterol accumulates and builds up
deposits called plaque on the walls of the blood vessels. People
with high cholesterol levels are more likely to suffer from heart
disease and high blood pressure.
There are two kinds of cholesterol. Cholesterol
attaches to proteins in the blood called lipoproteins. Low-density
lipoproteins (LDLs) carry cholesterol that builds up plaque, so LDL-cholesterol
is considered "bad" cholesterol. High-density lipoproteins (HDLs),
on the other hand, carry cholesterol to the liver, where the body
can get rid of it; therefore HDL-cholesterol is regarded as "good"
cholesterol. |