This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.
ST. LOUIS, MO (KTVI) – Fewer teenagers in the U.S. are smoking, but secondhand smoke remains a problem to their health. Dr. Ken Haller is a SLU-Care pediatrician with SSM Health Cardinal Glennon. He explains the results of a new study.
