The level of cholesterol in the bloodstream greatly affects the risk
of developing heart disease. The higher the level of blood cholesterol,
the greater the risk for heart disease or heart attack.
Why? When there is too much cholesterol (a fat-like substance) in
the blood, it builds up in the walls of arteries. Over time, this
buildup causes arteries to become narrowed, and blood flow to the
heart is slowed or blocked. If the blood supply to a portion of the
heart is completely cut off, a heart attack results.
Various factors affect cholesterol levels: diet, weight, physical
activity, age and gender, and heredity.
High blood cholesterol itself does not cause symptoms.
You may not know your blood cholesterol level is too high. So, it’s
important to have your cholesterol measured. Adults age 20 or older
should have their cholesterol checked at least once every 5 years.
It best to have a blood test called a lipoprotein profile. This test
measures total cholesterol, "good" and "bad" cholesterol,
as well as triglycerides, another form of fat in the blood.
High cholesterol is treated with lifestyle changes–a heart healthy
eating plan, physical activity, and loss of excess weight–and,
if those do not lower it enough, medication. Medications include statins,
bile acid sequestrants, nicontinic acid, and fibric acids.
What Do Your Cholesterol Numbers Mean?
Everyone age 20 and older should have their cholesterol measured at
least once every 5 years. It is best to have a blood test called a
"lipoprotein profile" to find out your cholesterol numbers.
This blood test is done after a 9- to 12-hour fast and gives information
about your:
* Total cholesterol
* LDL (bad) cholesterol--the main source of cholesterol buildup and
blockage in the arteries
*HDL (good) cholesterol--helps keep cholesterol from building up in
the arteries
* Triglycerides--another form of fat in your blood
If it is not possible to get a lipoprotein profile done, knowing your
total cholesterol and HDL cholesterol can give you a general idea
about your cholesterol levels. If your total cholesterol is 200 mg/dL*
or more or if your HDL is less than 40 mg/dL, you will need to have
a lipoprotein profile done.