(CBS NEWS) -- Some smokers are turning to e-cigarettes as an alternative to traditional cigarettes. Now, a new study looks at whether e-cigarettes may be an effective way to stop or reduce smoking.
Bethany O'Grady says e-cigarettes helped her kick her pack-a-day smoking habit.
"I never want to smoke a real cigarette again," she says.
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 of UCSF.
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.
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 rather than later.
For now, she says she'll get her fix from e-cigarettes.