It almost seems like a cruel conspiracy: products which claim to be designed to help heal a painful and debilitating condition may actually be causing it. Millions of Americans with celiac disease, a condition which renders their bodies unable to process gluten, turn to probiotic supplements for symptom relief. Despite these products promoting themselves as gluten-free, a new study has found that many of the pills designed to combat the effects of gluten actually contain gluten themselves. How can this be? According to experts, while products claiming "gluten-free" status are FDA regulated, their purity is very difficult to monitor. The bottom line? Anyone with food sensitivities, be it celiac disease, allergies, even a prescription for MAO inhibitors (which require those treated to diligently avoid tyramine, an amino acid that helps regulate blood pressure), should show their doctor every single supplement they plan to take—well in advance of taking it.