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Smokers may be able to blame their genes

April 26, 2010 12:00:00 AM PDT
There's more evidence now that smoking may be in your genes, according to three studies published in Nature Genetics.The studies show that there are three genetic variants associated with smoking.

For example, the variants on chromosome 15, associated with heavy smoking, lie within a region that contains nicotine receptor genes, which other scientists have previously associated with nicotine dependence and lung cancer.

The findings came from an analysis of more than 74,000 people.