Eleni Papakosta-Gaki is a psychologist–psychotherapist with psychodynamic orientation and a PhD candidate at the Medical School of Aristotle University of Thessaloniki (AUTH), where she is also a scientific associate at the Laboratory of Primary Health Care, General Practice and Health Services Research. She holds a Master's degree in Health Care Management (HOU). Since 2000, she has been working at the Centers for the Prevention of Addictions and the Promotion of Psychosocial Health "SEIRIOS," Municipality of Thessaloniki – EOPAE, where she is responsible for the design, management, and implementation of preventive interventions, educational seminars, and supervision teams for professionals. She has participated in national and European research programs (AUTH, NKUA, EPIPSI, EKTEPN, EMCDDA) and has served as President of the Scientific Committee of the 1st Panhellenic Interdisciplinary Conference of Prevention Centres. Her research interests focus on health needs assessment and evaluation in primary health care, community-based participatory research, and the exploration of professional attitudes and perceptions in health and prevention settings. She is a member of the Association of Greek Psychologists, the European Federation of Psychologists' Associations (EFPA), and the Association of Employees of Prevention Centres.