An article published this month in the journal Pediatrics says that the number of PG-13 movies that have characters who smoke has outnumbered R-rated movies with smoking in them over the past three years. It goes on to say that exposure to smoking in the movies increases smoking among teens.
Stanton Glantz, professor of medicine and director of the Center for Tobacco Control Research and Education at the University of California at San Francisco
Jacob Sullum, senior editor of Reason magazine; author of For Your Own Good: The Anti-Smoking Crusade and the Tyranny of Public Health
Dr. Nora Volkow, director of the National Institute on Drug Abuse, part of the National Institutes of Health