This little book would be a life saver for many if they knew about it. The doctor/researcher that wrote it was well ahead of his time. When he was coming up through psychiatry, methods of treating mental illness were pretty barbaric and did not 'fix' anyone afflicted--they usually made them worse off. The author had a feeling there was something all of the psych docs and researchers were missing. His research and RESULTS from administering a nutrition-based treatment program were proof of a broken, failed mental health system. It is amazing how much we Americans are vitamin and mineral deficient. Millions here suffer unnecessarily. Our corporate-style agriculture has stripped our once fertile lands of life-sustaining vitamins and minerals. Many of us are walking around feeling like crap and our doctors just blow us off or prescribe a litany of pills. And to no avail. Few of these so-called 'medical practitioners' (yes, it is a practice, not a science) know how nutrition and mental health are so inextricably linked. Any of you with even the slightest issues with depression, anxiety, or mental health issues will tremendously benefit from owning this life-changing book. Recently, a simple mix of B-6, zinc and methionine recommended in this simple, yet sage book saved my life. And to think, allllll these years I pointlessly suffered due to doctors' ignorance, lousy agricultural practices and a lack of a vitamin, a minerals and one enzyme. Go science!!!!!!!!!Sincerely,Sir Feeling Great