California smoking laws: E cigarette regulation, higher age limit signed by Gov. Jerry Brown East Bay Times FACT: Most e cigarette users also smoke cigarettes, a pattern known as dual use. This means the tobacco industry isn't helping people quit; it's sustaining addiction through another product. While the industry claims Electronic Cigarettes and Your Health: Maritza O Jenkins, DMD: General Dentist Mountain View could ban e cigarettes and flavored tobacco sales San Jos Spotlight