I don't know if I could trust a doctor who recommended a gluten free diet unless I had come to him with the unsubtle symptoms of Coeliac. You should be extra careful living in the same city as Andrew Weil. The quality of medical advice you receive could be suspect. Most health fads not supported by science, like the current gluten scare, are more or less harmless, but sometimes that stuff does damage. If your doctor doesn't feel obliged to learn if something is medicine, or public paranoia before he recommends it I don't know if he should be trusted.