Question: what are the long term effects of chewing nicotine gum?
Answer: In some published studies, people have used nicotine gum up to five years, according to Richard Hurt, MD, professor of medicine and director of the Nicotine Dependence Center at the Mayo Clinic in Rochester, Minn. "As far as we now know," he says, "there are no heart or vascular problems associated with long-term use."