Millions of people use electronic cigarettes, or vaping devices. While tobacco use remains the largest cause of preventable death and disability in the U.S., vaping concerns — and injuries — are on the rise. "Electronic cigarettes are probably safer than cigarettes, but they are not safe", says Dr. J. Taylor Hays, director of the Mayo Clinic Nicotine Dependence Center. He explains why in this Mayo Clinic Radio Health Minute. To listen, click the link below.