The decision is certain to be opposed by health groups and parent organizations that have long pointed to flavors as the driver behind underage vaping in the U.S. But the federal action A scientific review has raised fresh concerns about the long term cancer risks of vaping, concluding that e cigarettes are probably carcinogenic, while also acknowledging significant gaps in the evidence. The analysis of reviews San Francisco, home to Juul Labs, adopts nation's first e cigarette ban The Washington Post Vapes '95% safer' than cigarettes messaging backfired