Good cholesterol 'can turn nasty and clog arteries'

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Good cholesterol also has a nasty side that can increase the risk of heart attacks, according to US doctors.

"Good", or HDL, cholesterol normally helps to keep arteries clear and is good for heart health.

But the team at the Cleveland Clinic showed it can become abnormal and lead to blocked blood vessels.

They say people should still eat healthily, but that the good cholesterol story is a more complex tale than previously thought.

Low-density lipoprotein (LDL) cholesterol is "bad" because it is deposited in the walls of arteries and causes hard plaques to build up that can cause blockages, resulting in heart attacks and stroke.

High-density lipoprotein (HDL) cholesterol is "good" because the cholesterol is instead shipped to the liver.

http://www.bbc.co.uk/news/health-25882875
 
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