Mia Lundin is a nurse practitioner who specializes in gynecology and obstetrics. She ran The Center for Hormonal and Nutritional Balance, Inc. for seventeen years and is the author of Female Brain Gone Insane. Lundun lives in Santa Barbara, California. Ulrika Davidsson is a diet and health expert. She has contributed to twenty-four books, which have sold over a million copies and been translated into twelve languages. She lives in Stockholm, Sweden.