Gene for Nicotine

Researchers found that there may be a connection between a mutation of a gene and addiction to smoking. A study found that seventh graders with a mutation on the CYP2A6 gene were less likely to become addicted to cigarettes. Having a mutation in this gene causes the liver to not break down nicotine as fast, which causes the "buzz" of nicotine to last longer, which then causes the person to not smoke as many cigarettes as a person who does not have the mutation. Further studies will do more research on this gene in the future.
http://www.foxnews.com/story/0,2933,139484,00.html