Majdi is an internationally recognized physician-scientist working to reduce health disparities and develop microbiome-based health solutions. Trained in internal medicine at University College London, he has previously conducted research at the World Health Organization and completed his Master’s in Public Health at the Harvard T.H. Chan School of Public Health on a Frank Knox Fellowship. 

Majdi’s research focuses on infectious disease, malnutrition, and stool banking. His work has been published in The Lancet, The New England Journal of Medicine, and Clinical Infectious Diseases. He was also a co-principal investigator on the THRIVE (Transfer of Healthy Gut Flora for Restoration of Intestinal Microbiota via Enema) study—the first fecal microbiota transplantation (FMT) clinical trial on the African Continent.

At OpenBiome Foundation, Majdi helps develop new microbiome-based approaches for public health challenges including malnutrition and mental health. He is also the co-founder of YBank—a non-profit dedicated to adolescent health, a visiting assistant professor at Harvard Medical School, and a Trustee of the African Research Excellence Fund.