"The New Puberty is a truly important book. Without jumping to conclusions, this book shows concern without alarm, discusses the scientific factors that could be triggering it,and most important details the psychological consequences that girls might go through, and the support they need." -Po Bronson, co-author of NurtureShock

"The New Puberty is a treasure trove of information. In it, the authors take a deep dive into the psychology and biology of teen girls. It is destined to become a classic for parents and educators." -Louann Brizendine, MD, author of The Female Brain and founder/director of the Women's and Teen Girl's Mood and Hormone Clinic, UCSF

"Filled with surprising and fascinating research, as well as practical and empowering strategies, The New Puberty is a book every parent and health practitioner needs to read." -David Kessler, author of the New York Times bestselling The End of Overeating and former commissioner of the US Food and Drug Administration

"Increasingly parents are asking why their children are heading into puberty at a much younger age than they ever did. Combining their backgrounds as both scientists and parents, Greenspan and Deardorff give them all of the answers they are looking for. The New Puberty explains why our changing world has affected our kids' bodies--then guides parents on what they can do. Anyone who has a young girl will want to read this book!" -Cara Natterson, MD, pediatrician and New York Times bestselling author of The Care and Keeping of You 2