The Food and Drug Administration on Friday authorized the first menthol-flavored electronic cigarettes for adult smokers, acknowledging that vaping flavors can reduce the harms of traditional tobacco smoking. The FDA said it authorized four menthol e-cigarettes from Njoy, the vaping brand recently acquired by tobacco giant Altria, which also sells Marlboro cigarettes. The decision lends new credibility to vaping companies' longstanding claim that their products can help blunt the toll of smoking, which is b ...