Interview with Dr. Brett Thombs, professor in the Faculty of Medicine at McGill University and senior investigator of the Lady Davis Institute, Jewish General Hospital in Montreal. He is also chair-elect of the Canadian Task Force on Preventive Health Care and chair of the tobacco guideline working group. In their guideline published in the CMAJ, Dr. Thombs and the Task Force reviewed the evidence supporting behavioural interventions for prevention and treatment of smoking in children and youth. He explains their findings in this podcast.Full guideline article: www.cmaj.ca/lookup/doi/10.1503/cmaj.161242Podcast transcript: https://www.cmaj.ca/transcript-161242Subscribe to CMAJ Podcasts on Apple Podcasts or your favourite podcast app. You can also follow us directly on our SoundCloud page or you can visit www.cmaj.ca/page/multimedia/podcasts.