Smoking: A Genetic Addiction

SALT LAKE CITY Brandon Smart has smoked for more than half his life.

"Oh, I've tried to quit three or four times at least ... mostly New Year's resolutions that don't pan out," he told Ivanhoe.

He may have triggered a nicotine addiction when he started smoking at 15.

"If you begin smoking when you're a teenager, you often have higher levels of lifetime dependence," Robert Weiss, Ph.D., a human geneticist at the University of Utah in Salt Lake City, explained.

Dr. Weiss and his research team found 60 percent of people have a genetic variance that makes them susceptible to nicotine addiction. Those who started smoking at 16 or younger and had two copies of the variance triggered a lifelong dependence. That's about one of every eight smokers.

The study is proof anti-smoking campaigns need to reach kids as early as elementary school. "It reconfirms that those who start before get addicted to nicotine more easily than those who start later in life, so if we can get to them when they're young, they won't start when they're older," David Neville, the media coordinator of the Tobacco Prevention and Control Program at the Utah Department of Health in Salt Lake City, said.

Smart wants the anti-smoking campaign to succeed for two very important reasons ...

"I have two children of my own and I'm concerned for them and the genetic link that may be there," he said.

It may be in their genes, but children can fight it by never picking up a cigarette in the first place.

Nearly 6,000 children under 18 start smoking every day, and 4.5 million kids are smokers. Now that researchers have established a genetic link between nicotine addiction and teenage smokers, they're working on quitting methods that target genes


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