Valerie Schwaber smoked cigarettes while wearing the nicotine patch. It didn’t curb her cravings. The gum caused her heart to race. Acupuncture had no effect either.
Then Schwaber, a 29-year-old emergency medical technician from Lexington who smoked as much as three packs a day, tried electronic cigarettes. The battery-operated vaporizers, often shaped like a cigarette, use flavored liquids to deliver a dose of nicotine with each draw. She hasn’t smoked for more than two years.