Prof. Dr. Öznur Küçük began her medical career in 2005-2006, completing her mandatory service at Malatya Doğanşehir State Hospital. She then worked at Üsküdar State Hospital (2006-2007) before continuing her duties at Paşabahçe State Hospital until 2010. In 2010-2011, she joined Bozok University Faculty of Medicine, where she was awarded the title of Assistant Professor. She later earned her Associate Professorship in 2015 from Yeditepe University Faculty of Medicine.Throughout her career, Prof. Dr. Küçük has made significant contributions to pediatrics, with a special focus on child nutrition, breastfeeding, immunization, social pediatrics, allergies, asthma, and pediatric respiratory diseases. From 2016 to 2019, she worked at Private Istanbul Medipol Hospital, further expanding her expertise in pediatric health and preventive medicine.Her research and academic contributions include numerous national and international publications, along with active participation in scientific congresses and meetings related to pediatrics and child health. She remains dedicated to preventive medicine, childhood immunization, infant nutrition, and pediatric respiratory conditions, continuing to advance knowledge and improve child healthcare through her expertise and research.