Young men are buying “Facial Fitness” chewing gum that promises to bulk up their jawlines. But dentists say the products are not particularly effective or safe. By Callie Holtermann A square-jawed ...

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We all know the ritual of unwrapping a stick of gum before a big date, a job interview or to stay awake during a college lecture or afternoon slump. After all, gum is the ultimate multitasker – ...