Adults under age 25 were more likely to be current tobacco users than older adults in 2013 and 2014, at an estimated 38% and 26%, respectively, according to a study reported this week in the New England Journal of Medicine. Among other findings, nearly one in 10 teens had used a tobacco product in the past 30 days, usually cigarettes. Four in 10 tobacco users consumed more than one type of product, with cigarettes plus e-cigarettes the most common combination. The study, supported by the Department of Health and Human Services, will help inform tobacco regulatory control efforts, the authors said.