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Q&A: What are the benefits of going gluten-free?

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Q: Everyone is on the gluten-free bandwagon these days, but I can't figure out if it's something I should avoid or not? What's the story? -- Daisy F., Durham, N.C. A: Gluten-free diets are more popular now because we've developed ways -- some based in science and some using trial and error -- to identify who has trouble digesting this protein found in wheat, rye, barley and countless...