Sudden Reaction to a Food? It Could Be Adult-Onset Allergy - WebMD

More than 50 million Americans have food allergies, which happen when a person's immune system overreacts to something in a food.

That's not true, however, for those who experience a serious allergic reaction. "Those are the ones where you need to completely avoid that allergen," Gupta said, who added that getting a formal dia… [+1960 chars]

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