SAN DIEGO—E-cigarettes don’t help smokers stay off cigarettes, despite U.S. Centers for Disease Control and Prevention (CDC) guidance suggesting they can be an effective path to quitting, a report published Oct. 19 with research from the University of California San Diego (UCSD) found. The CDC has previously suggested that smokers who are unable to quit smoking may benefit by switching to vaping e-cigarettes if they switch completely and are able to avoid relapsing to cigarette smoking. In a report published in Tuesday’s online issue of JAMA Network Open, an analysis by the Herbert Wertheim School of Public Health and Human Longevity Science at UCSD and UCSD Moores Cancer Center reports that e-cigarette use—even on a daily basis—did not help smokers successfully stay off cigarettes. “Our findings suggest that individuals who quit smoking and switched to e-cigarettes or other tobacco products actually increased their risk of a relapse back to smoking …