Geoffrey A. Preidis

Geoffrey A. Preidis is an Associate Professor in the Department of Pediatrics at Baylor College of Medicine, with a focus on Neonatal Gastroenterology, Gut Microbiome interactions, and the pathophysiology of undernutrition. He is affiliated with Texas Children's Hospital and leads the Pediatric Gastroenterology, Hepatology & Nutrition Research Laboratory. His research investigates mechanisms linking early-life undernutrition to metabolic and gastrointestinal dysfunction, emphasizing bile acid pathways, microbiome dynamics, and developmental physiology.

Education: M.D. and Ph.D. from Baylor College of Medicine (2012 and 2011), Physics (cum laude) from Harvard University (2003). Completed residency and fellowship in Pediatric Gastroenterology at Baylor/Texas Children's Hospital.

Research Interests: His work spans neonatal gut microbiome development, sex differences in nutritional physiology, probiotic efficacy, and bile acid-microbiome interactions. Recent studies address how malnutrition impacts liver function, intestinal motility, and microbiome composition in preterm infants and children with severe undernutrition.

Funding: Active grants include NIH-supported projects on bile acid synthesis in malnutrition, clinical trials in pediatric gastroparesis, and microbiome-based therapeutics. Notable awards include the Chao Physician-Scientist Award and AGA-Rome Foundation grants.

Awards: His contributions to probiotic research and malnutrition pathophysiology have been recognized through multiple grants and collaborations with global health organizations.

Lab & Teams: Leads a multidisciplinary lab integrating metabolomics, microbiology, and clinical trials. Collaborates with institutions like the Texas Children's Microbiome Center and global networks addressing pediatric malnutrition.