E-cigarettes do not increase smoking cessation and are associated with reduced tobacco abstinence, says researchers at the Herbert Wertheim School of Public Health and Human Longevity Science and Moores Cancer Center at the University of California San Diego. The study, among smokers in the U.S. and published March 5 in JAMA, “refutes the common misperception among tobacco users and e-cigarette proponents” that e-cigarettes can help people quit smoking.
“Most smokers think vaping will help you quit smoking,” John P. Pierce, Ph.D., a distinguished professor at the school and study’s co-author said. “However, this belief is not supported by science to date. While some researchers have suggested that smokers who switch to daily vaping will be more successful in quitting smoking, we studied quitting success among both daily and non-daily vapers and came up with a quite definitive answer.”
The study analyzed data from 6,000 U.S. smokers from the Population Assessment of Tobacco and Health Study. There were 943 smokers who also vaped and by matching and comparing these to similar smokers who didn’t vape, they found smoking cessation was 4.1% lower among smokers who vaped daily and 5.3% lower among smokers who vaped occasionally.
Researchers said that while e-cigarettes don’t have the same health consequences as smoking, they are not harmless.
“The adverse health effects of cigarette smoking become obvious after people have smoked for 20 years,” said Pierce. “While vapes generally don’t contain the same harmful chemicals as cigarette smoke, they have other risks, and we just don’t yet know what the health consequences of vaping over 20 to 30 years will be.”
This study was supported by the Tobacco-Related Disease Research Program of the University of California Office of the President.
