The Chewing the Fat podcasters join us to talk about the rise of the gluten-free diet, which some researchers say is the most popular diet in American history. It’s a several billion dollar industry, but why are people going gluten-free? Is it always medically necessary? Those are questions Monica Eng and Louisa Chu ask on their latest Chewing the Fat podcast. They talk about the big subject and big business of gluten sensitivity and gluten free products. Plus, WBEZ’s Yolanda Perdomo joins us in studio. She recently attended the gluten free expo in Schaumburg, and is the parent of a child with Celiac Disease. Photo Credit: WBEZ