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  • Although cholesterol is often viewed as something that's bad for the body, cholesterol is actually good for the body, in small amounts. There are two different types of cholesterol, and they affect the body differently.

    Three main purposes of cholesterol

    There are three main purposes for cholesterol. Cholesterol produces steroid and cortisone hormones. Cholesterol also helps produce bile so the digestive system digests fats, and it also serves as a building block for tissues. Cholesterol serves as a building block particularly for the cellular structure of the brain and central nervous system.

    LDL(Low-Density lipoprotein)

    Cholesterol is transported to and from cells by carriers called lipoproteins. Low-density lipoproteins called LDL cholesterol are the "bad " cholesterol. Too much LDL cholesterol in the body can cause a build-up of plaque around the arteries, which can lead to atherosclerosis. This condition can lead to a stroke or heart attack.

    HDL(High-Denstiy lipoprotein)

    HDL (high-density lipoprotein) is good for the body. High levels of lipoprotein protect against heart attacks. Unlike LDL, which brings cholesterol to the arteries, HDL carries cholesterol away from the arteries, reducing the risk of heart disease.

    How Cholesterol Enters the Body

    Cholesterol enters the body through saturated fats such as meat, dairy and eggs. Low-density lipoproteins carry the cholesterol to the liver. HDL acts as a vacuum and sucks up excess cholesterol. However, if too much cholesterol is built up in the body, the HDL cholesterol is unable to suck up all of the excess cholesterol, which then causes a build-up around the arteries.

    Preventing High Cholesterol

    You can help prevent high cholesterol by eating fewer saturated fats. You can also eat foods that help lower cholesterol such as soy protein, fiber, nuts and garlic. Exercising raises HDL and helps lower LDL.

    Source:

    The Role of Cholesterol

    American Heart Association: LDL and HDL Cholesterol: What's Bad and What's Good

    Ask Dr. Sears: Controlling your cholesterol

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