The Genetics of Tobacco Use

Although there are a number of treatments available to help people stop smoking (the most
common being nicotine replacement therapies, such as patch and gum, and varenicline in the UK),
these are only moderately effective. While they can double the chances of long-term abstinence
from smoking in those attempting to quit, this is against a very low basic success rate. Therefore,
most smokers (even those taking medications to help them stop and receiving good behavioural
support) who attempt to stop eventually relapse to smoking.