Christie del Castillo-Hegyi, MD, is a board-certified emergency physician and studies newborn brain injury and developmental disabilities caused by insufficient feeding. She cofounded the Fed Is Best Foundation when her own first-born son was harmed by unsafe advice on exclusive breastfeeding from breastfeeding books, breastfeeding classes, and health professionals. When she learned that these complications were happening on a daily basis to infants across the globe as a result of things commonly taught to parents, she and Jody Segrave-Daly launched the Foundation to raise awareness among parents and health professionals. She has advocated for safer breastfeeding practices at the NIH, the USDA, and to members of Congress, and, with Segrave-Daly, has met with the top officials of the World Health Organization breastfeeding guidelines program. She is a member of the Global Developmental Disabilities Research Collaborators and has coauthored papers documenting the rise in prevalence of multiple neurological and developmental disabilities among children across the globe.