Key points from article :
E-cigarettes don’t help people quit smoking, according to new research.
Team identified 13,604 smokers in the US who were tracked from 2013 to 2015.
At the second annual follow-up former smokers were compared to those who had switched to the other types.
Former group including e-cigarette users were 8.5 percent more likely to be back on traditional cigarettes.
They heat a liquid made of nicotine, flavourings and other chemicals.
To make an aerosol that users inhale into their lungs.
Vaping even on a daily basis did not help smokers successfully stay off cigarettes.
John Pierce, Professor of the University of California, says "... first study to take a deep look at whether switching to a less harmful nicotine source can be maintained over time without relapsing to cigarette smoking".
E-cigarettes were no better than nicotine patches or dummy devices at helping people quit smoking.
Research by University of California, San Diego published in JAMA Network Open
