Ban on flavored vaping may have led teens to cigarettes, study suggests Yale News San Francisco's e cigarette sales ban is an unprecedented health experiment CNN San Francisco Bans Sale of Juul and Other E Cigarettes The New York Times The Health Risks Of E Cigarettes Versus Traditional Cigarettes Henry Ford Health Detroit, MI The union representing San Francisco Muni drivers is angry over new break restrictions. The SFMTA says they are trying to improve on delays and save money. Special breaks now have to be approved and Flavored tobacco use among youth and young adults