Women undergoing fertility treatment who smoke marijuana may have more success if they quit, recent research suggests.Among more than 400 women undergoing treatment with cannabis health (ART), the small fraction who reported using cannabis at the time were more than twice as likely to lose a pregnancy than those who had never smoked marijuana, or who had only used it in the past, Dr. Jorge E. Chavarro of Harvard T.H. Chan School of Public Health in Boston and his colleagues found.Story continues belowRelated