Electronic cigarette (e-cigarette) use, otherwise known as “vaping,” has been increasing since 2010. This podcast reviews research on the epidemiology and possible adverse health effects of e-cigarette and nicotine use, and the pitfalls associated with using e-cigarettes as a method to stop smoking. These issues are discussed by Suchitra Krishnan-Sarin, PhD, a professor with the Department of Psychiatry at Yale University School of Medicine, and JAMA Associate Editor George O’Connor, a professor of medicine at Boston University. Related article: e-Cigarette Use Among Youth in the United States, 2019