Marija Selak graduated in Nutrition Science from the Faculty of Food Technology in Osijek in 2017. After completing her studies, she worked as a trainee in a private nutrition company, followed by a position as a lecturer of professional subjects at the Health School in Split. Since 2019, she has been employed at the Clinical Hospital Center Split. She is an external associate of the University of Split School of Medicine and the Polytechnic of Šibenik. She is also a member of the Management Board of the Croatian Nutritionists’ Association and regularly pursues professional development while participating in European and Croatian scientific and professional conferences.