DPH, UMMS researchers discover increased cigarette nicotine yield Findings indicate change in design by tobacco companies By Sandra Gray UMass Medical School Communications January 13, 2014 Wenjun Li, PhD, associate professor of medicine in the Division of Preventive and Behavioral Medicine, was senior author of the study finding increased yields of nicotine in cigarettes over the past decade-plus. A study by the Massachusetts Department of Public Health and UMass Medical School finds that the amount of nicotine delivered via smoke, known as nicotine yield, increased sharply from 1998 to 2012 even as the total amount of nicotine in cigarettes has leveled off. “This study indicates that cigar... [Read more]