San Francisco takes steps to decrease e cigarette use among youth Piedmont Exedra An updated overview of e cigarette impact on human health Respiratory Research Springer Nature Link CDC urges stricter state regulation as e cigarette sales surge 47% since 2019 E cigarette newsAuthorities say e cigarette risks justify ban on vaping 'lifestyle' Vaping has soared in popularity over the last decade, growing from about 7 million users in 2011 to 41 million in 2018. E cigarettes: Facts, stats and regulations Vaping: Know the Dangers Rady Children's Health