Canada’s chief public health officer says rising rates of youth vaping represent an “emerging and serious health trend” and that more research is needed to understand the long-term health risks posed by e-cigarettes.

Theresa Tam made the comments in her annual report on the state of public health in Canada, which was [...] sent to the new federal Health Minister, Patty Hajdu. In her report, Dr. Tam highlighted the fact e-cigarettes increase the risk of nicotine addiction, which can alter brain development in young people. [...] But because e-cigarettes are so new, the long-term health risks are not yet known.