Hormones play a vital role in normal human physiology, but an imbalance may cause health problems and unpleasant symptoms such as hot flashes and night sweats. Here, physician Smith (What You Must Know About Vitamins, Minerals, Herbs, & More), who specializes in antiaging medicine, tackles hormones and the treatment of hormonal irregularities. She begins by discussing individual hormones, their roles in bodily functions, and how they work together. She then focuses on common problems that result from hormonal imbalance like premenstrual syndrome, postpartum depression, and, more seriously, osteoporosis and heart disease. The final section discusses hormone-replacement therapy and the difference between natural and synthetic hormone treatments. Smith is a proponent of natural or bioidentical hormones in custom-compounded drugs. However, this treatment has no evidence-based literature to support it, and these hormones are not approved by the FDA. Smith is a diplomat of the American Academy of Anti-Aging Physicians, an institute not recognized by the American Medical Association, the American Osteopathic Association, or the American Board of Medical Specialties. VERDICT Skip this and buy an extra copy of Our Bodies, Ourselves and Barbara Seaman and Laura Eldridge's No-Nonsense Guide to Menopause.—Barbara M. Bibel, Oakland P.L.