It’s not just Dr. Guandalini who urges caution when it comes to going gluten-free. Physicians who actually focus on their patients’ wellbeing don’t want them to waste energy and money on a needless elimination diet. In a 2013 state-of-the-field collection of essays, A Clinical Guide to Gluten-Related Disorders, the authors recommend confirming a diagnosis of celiac disease (CD) before “embarking on treatment,” which can be “burdensome to follow and adds significantly to the cost of living.”