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Fix #1: Adjust Your Lifestyle
“Tobacco, with its tars and nicotine, is a big villain” when it comes to yellowing, says Price. Tobacco use, along with consuming certain foods and drinks, such as red wine, dark sodas, berries, coffee, and tea, can stain teeth and cause them to yellow. “If it stains the carpet, it stains the mouth,” Price says. Reducing your intake of these and quitting smoking will help prevent teeth from staining and keep your smile bright. You can also try swishing with water after drinking or eating, or drinking through a straw if you don't have access to a toothbrush right away, which may help prevent staining.