When Paul Graham was suddenly diagnosed with a serious wheat allergy at the age of thirty-six, he was forced to say goodbye to traditional pasta, pizza, sandwiches, and more. Gone, too, were some of his favorite hobbies, including brewing beer with a buddy and gorging on his wife’s homemade breads. Struggling to understand why he and so many others had become allergic to wheat, barley, rye, oats, and other dietary staples, Graham researched the...