Giannis Papatheodorou is a Pathologist who maintains private clinics in Neo Irakleio and Acharnes. He holds a degree from the Medical School of the University of Craiova and specialized in Pathology at the General Oncology Hospital "Agioi Anargyroi" and the 1st Pathology Clinic of the General Hospital of Athens "Evangelismos," with clinical expertise in infections. He is a consulting physician for Eurodiet and participates in numerous medical conferences in Greece and abroad. He has co-authored, together with his microbiologist physician wife, the book "The Interpretation of Microbiological Tests." Finally, the doctor is a member of the Athens Medical Association, the Hellenic Gerontological & Geriatric Society, and the Hellenic Society for the Study & Research of Aging.