It is clear that all organisms have highly developed mechanisms for self-repair and healing -- but according to Dr. Weil, Western medicine often interferes instead of working with these systems. In the course of his argument, he describes several extraordinary case studies of drastic spontaneous healing. Perhaps the most valuable feature of the book is his more gradual eight-week program of strengthening the ability of your immune, endocrine, circulatory, and nervous systems to provide such spontaneous healing.