Abdosamad Taghizadeh was born in Damavand, Iran. In 1957, he obtained a qualification at the University of Tehran. In 1959 he moved to the United Kingdom, where he trained in pathology and developed an interest in research. In 1965, after receiving his doctorate, he became a lecturer at University College Hospital in London. There he devoted himself to pathology, research and teaching. His research focused on retinal and pulmonary pathologies in premature newborns associated with treatment with high concentrations of oxygen. He also worked on blood glucose regulation in the liver and pancreas. He divided his activities between pathology and politics, while the peak of his political activity was in the 1960s and 1970s.