Introduction: Immunization is a lifelong preventive activity that helps prevent/reduce disease, prevent/ reduce mortality and prevent disability from specific infectious diseases. Material and Methods: Authors of this paper researched the WHO extended program of mandatory immunization of children from birth to the age of 18 years and analyzed how it has been implemented in the Federation of Bosnia and Herzegovina (FB&H), because the guidelines of the specialist physician societies on immunization of adults, elderly people and risk groups of the population are missing. Results: The paper presents the basic characteristics of the immunization program in the FB&H and the world, points to the most frequent problems that the doctor practitioner has in carrying out immunization, and also presents possible modalities of improving immunization. It is pointed out the need to develop the national guidelines and individual immunization booklets, introduction of electronic registration of immunization, and continuous education of health professionals of all profiles, population, educators, teachers and harmonious partnership relations of health workers, population, social entities and the media with the aim of achieving an appropriate lifelong vaccination.

The most frequent disease of the arteries is atherosclerosis which is characterized by lumen reduction of blood vessels due to local thickening of internal blood vessels caused by plaque/atheroma. As a cardiovascular disease, atherosclerosis is an interdisciplinary problem and one of the leading causes of death in developed countries. It begins in childhood, goes a long time without manifesting symptoms, increasing with age it begins to seriously threaten health. The most dangerous risk factors for the development of atherosclerotic disease are: Hyperlipidaemia, hypertension, smoking, diabetes, high fibrinogen, excessive weight and physical inactivity.

and patterns that may contribute to a cardiovascular risk reduction. Materials and Methods: This cross-sectional study was conducted in 2024 and included 473 students from health studies faculties in three cities: Sarajevo, Mostar, and Split. Independent variables in the study were diet type (Mediterranean vs. non-Mediterranean), physical activity, and smoking. Dependent variables included lipid profile (cholesterol, triglycerides), blood pressure, and blood glucose levels. Results: Students from Split exhibited the highest consumption frequency of olive oil, fish, vegetables, and legumes consumption, which was statistically significant compared to students from Mostar and Sarajevo (χ² = 11.488, p = 0.022). A statistically significant difference was also found in the consumption of animal fats (butter, cream, margarine) across the cities (χ² = 19.860, p = 0.003). The average adherence score to the Mediterranean diet was highest among students from Split (3.80 points) and lowest among those from Sarajevo (2.77 points). Significant differences in cholesterol and triglyceride levels were observed only among female students across the cities (Kruskal-Wallis test, p < 0.05). Conclusion: A significant difference in cardiovascular risk factors was observed between students following the Mediterranean diet and those adhering to a non-Mediterranean diet. The Mediterranean diet demonstrated a beneficial effect on cardiovascular risk, as evident in the lipid profile. In contrast, non-Mediterranean diet, characterized by higher intakes of vegetable and animal fats, was associated with increased cardiovascular risk.