The nocebo effect of MSG and gluten intolerance

Quote: "No one likes to be told they are mistaken about the foundation of their most dearly held beliefs. It offended the faithful when Marx suggested that religions are psychological tools meant to placate the masses. Suggesting that gluten intolerance might have a psychological basis threatens a similarly foundational belief, namely that we are rational beings, competent interpreters of reality immune to mass hysteria and self-deception. ... Accepting a psychological explanation of gluten intolerance is especially difficult because food aversions often turn into a way of life. Like religion, avoiding gluten requires personal sacrifice. Gluten intolerance creates communities, which, like religious communities, share stories of suffering and redemption, and share meals made special by the presence of a food taboo. It’s no wonder people take offense at the suggestion that gluten intolerance could be psychological—after all, who wants to have built their way of life on a “mere” trick of the mind?"

More: "Hold The MSG" http://www.slate.com/articles/health_and_science/medical_examiner/2013/07/msg_and_gluten_intolerance_is_the_nocebo_effect_to_blame.html