For the woman anticipating pregnancy, this guide to prenatal care is a handy reference. The authors, both physicians, have scrutinized the research on health and nutrition during pregnancy and here provide critical information on fetal responses to foods and additives, drugs, cigarettes, and alcohol, exposure to bacterial and viral infections, and hazards from the environment. They ack-knowledge that science offers some conclusions but many questions are elusive or uninvestigated; that those with chronic conditions like diabetes face additional problems; and that with all the information available, in some unfortunate cases the benefits must be weighed against the risks, chancing potential harm to mother and child. In general, they recommend a balanced diet (2400 calories, 80 grams of protein); avoidance of aspirin and unnecessary medication; judicious use of stimulants, including coffee and tea; and increased sensitivity to the dangers from noxious substances--carbon monoxide (from car exhausts), factory chemicals, cleaning fluids and sprays. Each chapter identifies its contents in subheadings and summarizes them at the end. For the general population, a succinct presentation that raises appropriate warning signals without undue alarm.