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Mehmet Oz, MD, Cardiology, answeredCheck your tongue in the mirror. If you notice a white, yellow, or orange coating, it could indicate acid reflux, which, in severe cases, can lead to esophageal cancer. Normally, a one-way valve at the bottom of your esophagus makes sure that whatever food or drink goes down doesn't come back up, but acid reflux occurs when this valve opens spontaneously and the acids in your stomach flows up into your throat, causing damage. To treat acid reflux before it reaches dangerous levels, try over-the-counter antacids and avoid acidic and spicy foods.
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