Kerstin Uvnäs Moberg, M.D., Ph.D., is recognised as a world authority on oxytocin. Her research has taken place and takes place at the famed Karolinska Institute in Stockholm, and at the Swedish University of Agricultural Sciences in Uppsala, where she is Professor of Physiology. The author of more than 450 scientific papers and previous books, She and He, The Oxytocin Factor and The Hormone of Closeness, Oxytocin the Biological Guide to Motherhood, and she is a co-author on Attachment to Pets. Dr. Uvnäs Moberg lectures widely in Europe and the United States. Her work has been influential in a variety of fields, including physiology, women's health, obstetrics, psychology, animal husbandry, physical therapy, pediatrics, and child development. A mother of four children, she lives in Djursholm, Sweden.