Kicking the smoking habit may all be a matter of genetics.

New research from the Washington University School of Medicine in St. Louis has revealed that a person’s gene variations may predict whether or not they will have difficulty quitting smoking.  Published in the American Journals of Psychiatry, the study also found that those same variations are also foretelling of the person’s ability to respond to nicotine-replacement drugs.

After collecting data from over 6,000 smokers who participated in scientific studies, researchers compared each participant’s ability to stop smoking with genetic variations that have been found to be linked with an increased risk of smoking and nicotine dependence.

Read more: Fox News