Those who had the haplotype but did not begin smoking until 17 or later were not at an increased risk of life-long addiction.
People with a second haplotype had a reduced risk of becoming heavy smokers as adults even if they acquired the habit as youngsters, the study said.
More information
To learn more, visit the Campaign for Tobacco-Free Kids.
-- HeathDay Staff
SOURCE: University of Utah, news release, July 10, 2008
| Copyright©2008 ScoutNews,LLC. All rights reserved |