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E-Cigarettes

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Bethany O'Grady says e-cigarettes helped her kick her pack-a-day smoking habit. "I never want to smoke a real cigarette again."

Electronic cigarettes turn a liquid solution into a vapor, and some contain nicotine.

Many believe they can help people quit smoking. But researchers at the University of California, San Francisco followed nearly 1,000 smokers for a year - and found no link between e-cigarettes and quitting, or cutting down on smoking.

"There was no association between having tried an e-cigarette and quitting smoking at one year follow up," says Dr. Rachel Grana.

The study authors are calling for regulations prohibiting brands from making claims that e-cigarettes can help people stop smoking, at least until there is scientific evidence. "Because e-cigarettes are unregulated, Consumers can not to know what they are putting into their bodies and there have been no long term studies on the health effects."

Researchers acknowledged just 88 of the people who participated in the study used e-cigarettes.

The Tobacco Vapor Electronic Cigarette Association criticizes the study for its limited data… and says the e-cigarettes are vastly less harmful than tobacco.

Bethany says e-cigarettes worked for her, but wants more research. "If there is a negative aspect, I would like to know sooner than later."

For now, she says she'll get her fix from e-cigarettes.

The study also found that women are more likely to use e-cigarettes than men.

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