tobacco patch Nicotine providing a two A Guide to Using the

But nicotine is not the only substance of interest

"The best thing anyone can do if they want to quit smoking is talk to their GP: there's solid evidence that NHS quit-smoking services help people kick the habit for good." But Prof John Britton, who co-authored the RCP report, says e-cigarettes are extremely positive for public health and should be "encouraged and endorsed"

A study from the Journal of Analytical Toxicology found that people who didnt smoke but stayed in a well-ventilated room with light smokers for several hours showed no significant levels of nicotine or other substances in their blood

Specifically, there may be spurious associations due to other factors that were unadjusted for: for example, Karey et al