Elevated HDL
We have been told for decades that too much cholesterol contributes to clogged arteries, heart attacks and strokes. In the last 10 years or so, scientists have come to understand cholesterol and that high levels of certain types actually prevent clogged arteries, heart attacks and strokes.
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Types of Cholesterol
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There are two types of cholesterol- HDL (high-density lipoproteins) and LDL (low-density lipoproteins). HDL is considered "good" cholesterol, while LDL is considered "bad" cholesterol.
HDL Cholesterol
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HDL carries cholesterol from the blood to the liver. According to the American Heart Association, it is believed to slow the buildup of arterial plaque, which clogs arteries and leads to heart problems.
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LDL Cholesterol
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LDL is the form of cholesterol that builds up in the arteries and forms plaque, which restricts blood flow into and out of the heart, eventually causing a heart attack or stroke.
High HDL Benefits
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A high blood level of HDL is beneficial, because HDL carries away LDL and minimizes the negative impact of any LDL in the blood. Elevated HDL nearly always corresponds with a low level of LDL and has been clinically shown to relate to a decrease in coronary heat disease.
Significance
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A study reported in Lipids Online showed that older people with more risk factors for cardiovascular problems, but who had a high level of HDL in their blood, showed better arterial wall health than those who were younger and at less risk, but who had lower levels of HDL.
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References
- Photo Credit heart pulse image by jim from Fotolia.com
