Dr. Grisanti, medical director of Functional Medicine University, introduces readers to a new way to look at a very persistent problem which plagues almost twelve million Americans. The cost to the public, including the recent death of actor Robin Williams, is immense. Though known for his humor and kindness, Williams succumbed to feelings of hopelessness and took his own life. Antidepressants are not the answer because they don’t explain the root cause, Dr. Grisanti explains, as he reveals new insights and discoveries made during his years of work in private practice.