At a gluten-free fair a few months ago, a friend briefly saw me and said, “Oh, Melissa, I am so bloated and gaining so much weight lately. I know it is all the corn products I have been eating lately.”

My friend is not alone. Corn has infiltrated the American food supply in a major, yet mostly invisible way, and virtually all Americans eat corn in some form without knowing it. People who begin a gluten-free diet (free of wheat, rye and barley) often are so focused on avoiding gluten that they substitute corn-based foods in place of wheat – repeatedly having corn tortillas instead of flour tortillas, for example – and end up eating a lot more corn-based foods. They gain weight and develop other health problems and don’t understand the reason why. Corn is the reason.

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A component of wheat gluten stimulates an innate immune system response in people with or without celiac disease, says a report in the British medical journal Gut.

Researchers from Spain performed gut biopsies on six patients without celiac disease. Then they used an innovative technique in which they challenged those gut biopsies with fragments of gliadin, a component of gluten, and watched for an interleukin-15 response. Interleukin-15 (IL-15) is a marker of activation of the innate immune system.

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