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Genetics does play a role in determining smoking behavior, according to a study of male twins that recently was published in The New England Journal of Medicine [327:829-833, 1992]. Although the effect of heredity appears to be small, the study's findings may lead to more effective prevention strategies and treatments to help people quit smoking.
"That the ability to quit smoking may involve genetic factors emphasizes the complexity of conceptualizing and treating addiction to nicotine," wrote the researchers, under the direction of Dorit Carmelli, Ph.D., of the Health Sciences Program of SRI International in California. "In the future, treatment approaches may seek genetically susceptible people in whom environmental effects can be maximized to improve rates of quitting."
The subjects were drawn from the National Academy…