Although some of the ideas of William Crook, M.D., Doris Rapp, M.D., and Sherry Rogers, M.D. were very helpful to me in regard to the subject of food allergy, the best single book on food allergies that I ever read was written by none of the above authors.
The best book on food allergy issues that I ever read is titled “Food Allergies and Food Intolerance: The Complete Guide to Their Identification and Treatment”. It is written by Jonathan Brostoff, M.D. and Linda Gamlin.
The Amazon.con link to this book is: http://www.amazon.com/Food-Allergies-Intolerance-Identification-Treatment/dp/0892818751
This book is rated four and a half stars. In my opinion it is a five star book.
Food allergies are solidly linked as a major (if not primary) causative factor to depression, ADHD, bipolar disorder, and schizophrenia.
A strong case can be made that food allergies play a substantial role in virtually all mental illnesses, and not just some.
I suggest one perform a simple linking Google search putting in whatever diagnosis one may have and the term food allergy or food allergies.
I lost two years of recovery believing in food allergy tests from two esteemed (by some) alternative medical laboratories (Metametrix and GSDL). It so turns out that NO food allergy testing is valid enough or accurate enough in which to pinpoint food allergies and/or food intolerances in oneself. An elimination diet performed at home is, and has always been, the gold standard for such.