Genes play a role: Researchers are currently trying to identify genes that increase one's risk for getting artery disease and heart attacks. By looking at families who have several generations with such diseases, researchers have found certain genes are involved. Some genes cause cholesterol levels to stay high. The challenge now is to figure out how each of the identified genes leads to artery disease and blockage.
Answered 12/11/2014
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This is still: Largely unknown.
Answered 3/26/2013
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