INTRODUCTION: Dementia is a condition, or as many may call it, a syndrome which is often caused by a few dozen of other illnesses. Which cognitive functions or the ability to process thoughts deteriorate more than expected in normal aging. Spreading useful genuine information’s, skills and hopes in good results for dementia diagnosis in younger population of people is of particular importance due to longer life expectancy and thus greater exposure to the development of dementia. METHODS: 127 students of the Ante Kuzmanić Secondary Medical School in Zadar and 109 pupils of health care division of the university of Zadar participated in this average research (N=236). When it comes to the meaning of the research, questionnaire is constructed, a questionnaire was constructed on sociodemographic characteristics and questions that examine previous experience and knowledge about treating patients who suffer from dementia and the desire of respondents to further improve their care in people with dementia. Furthermore, the Knowledge Test on Alzheimer's and other dementias from the Croatian Institute of Public Health was used, which consists of ten statements that are answered with true or false. The results significance was assured by Kolmogorov-Smirnov and Shapiro-Wilk tests. Since for the number of points in the knowledge test, the level of significance does not exceed 0.05, it can be said that the stated distribution is different from the normal one, which indicated the implementation of nonparametric statistical methods. For the hypotheses observed in the study, testing was conducted using the Hi square test, the Mann-Whitney U test, and the Kruskal-Wallis test. RESULTS: The level of knowledge of high school medical students and nursing students on the knowledge test is x=7,22, Sd=1,322; Min=3: Max=10 Fifth grade medical school students show the highest level (p<0,05). However, among nursing students, there is no statistical significance within the observed groups. We do not find differences in the knowledge of respondents who respondents who were well acquainted in health providing services appropriate for the people suffering from dementia compared to the statements in the knowledge test (p>0,05). The highest values were obtained by answering the questions: "I would like to further improve my care for people with dementia" (x = 4.0; Sd = 1.19). , and the lowest values were obtained by answering "persons with dementia have adequate care and nursing in Croatia. (x = 2.55; Sd = 0.91). A generally notable difference was found in the quantity of facts acquired with previous education with regard to having involvement in providing health care for people with dementia (p <0.05). CONCLUSION: The results show a very good level of respondents' knowledge of dementia. However, since Alzheimer’s disease is of unknown etiology and the onset of symptoms depends on the person, education is very important. The education of medical staff in the Republic of Croatia has proven to be positive in relation to other countries, and this allows us to have a good representation of subjects that include a source of knowledge about dementia in their curriculum.