Dr. Preidis is a physician-scientist at Baylor College of Medicine and Texas Children’s Hospital, where he is clinically trained in pediatric gastroenterology, hepatology, and nutrition. His laboratory seeks to to define mechanisms through which early life undernutrition alters metabolism and to determine how undernutrition influences intestinal and liver function. Undernutrition causes acute medical problems, but also long term health problems that may result from permanent epigenetic changes that alter transcription or via changes in the gut microbiome.