Smoking out microbes
By John Travis
From Washington, D.C., at a meeting of the American Society for Microbiology
Nicotine, the compound that so satisfies smokers, is also a potent killer of bacteria. In test-tube studies, it can destroy more than a dozen types of bacteria, including ones that cause diseases, Saleh A. Naser of the University of Central Florida in Orlando reports.
He and his colleagues observed that nicotine, at concentrations much less than those in the saliva of people who smoke regularly, readily destroys a wide range of bacteria. Germs that cause tuberculosis, as well as gum and skin diseases, were all susceptible. So were bacteria that naturally reside on human skin and in people’s mouths and gastrointestinal tracts.