In a paper published in the journal Nature Genetics, the team reported that three genetic regions were associated with the number of cigarettes smoked per day, one region was associated with smoking initiation, and one variant was associated with smoking cessation.
The variants on chromosome 15 that were associated with heavy smoking lie within a region that contains nicotinic receptor genes, which other scientists have previously associated with nicotine dependence and lung cancer.
via futurity.org
