The Hair Bible by Susan Scott explains bad hair days and what you can do to avoid them. Featured in New York magazine's "Best Doctors in Manhattan" issue, consults with other medical specialists and beauty experts to present the ultimate companion to having vibrant and healthy hair at any age. Dr. Scott explains how stress, diet, prescription, medication, vitamin deficiency and chronic illness affects hair growth; she gives understanding in each hair category, so you can get to the root of your hair concerns.