Acid reflux—which occurs when acids produced by your stomach make their way into the throat—is a common cause of a sore throat, Dr. Comer says. That means anything you do to stoke acid reflux could prolong or worsen a sore throat. For that reason, Dr. Comer recommends avoiding soda, fried foods, and citrus fruits like oranges and lemons. Also, skip food altogether for an hour before bed. Eating before you lie down can promote reflux and heartburn.
Mint has been used for hundreds of years as a health remedy. Peppermint oil might help with irritable bowel syndrome -- a long-term condition that can cause cramps, bloating, gas, diarrhea, and constipation -- and it may be good for headaches as well. More studies are needed to see how much it helps and why. People use the leaf for other conditions, too, but there’s very little evidence it helps with any of them. 
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