Mohammad Gharib was born in Tehran, Iran, on July 5, 1909. After completing high school in 1927, he went to Reims, France, where he studied at École de Medecine de Reims for 2 years and then enrolled at the Paris University Medical School. An honor student at the medical school, he passed the difficult examinations for an externship and later those for the coveted and highly competitive interne des hôpitaux de Paris. He received an M.D. degree in 1937 and, after 1 year of training in pediatrics with Professor Ribadeau-Dumas at Salpetriere Hôpital in Paris, returned home.