Study suggests relationship between smoking cessation, gene sequence

A study from the University of Virginia suggests there may be a genetic marker that is more common in individuals who successfully quit smoking. Researchers reviewed 22 studies covering more than 9,000 patients, focusing on a DNA sequence known as Taq1A and found a significant relationship between smoking cessation and different variations of the sequence, which is linked to dopamine regulation.

Though interesting, these findings do not necessarily apply to everyone – researcher Ming Li, a professor in the Department of Psychiatry and Neuroscience at U.Va, said there are still many factors, including stress, that contribute to the ability to quit.

Discussion: Does your experience working in tobacco dependence treatment suggest there may be a “stop smoking” gene? Tweet @globalbridges or share your thoughts on the Global Bridges Discussion Board.