Introduction/Objective 
The objective of this study was to determine the prevalence of alcohol use in the student population of the University of
Belgrade.
Methods 
The cross-sectional study was conducted in a population of 2,000 students of the Belgrade University. Four faculties (Medicine, Geography,
Economics, Electrical Engineering) from which the students participating in this research were chosen by the method of random choice (by computer
listing), conducted in the period April - June 2010.
Results 
Among our respondents, the highest amount of spirits is consumed by respondents from the Faculty of Electrical Engineering, with 22% of
them consuming more than 6 shots on each occasion, while the smallest number of students who drink more than 6 shots on each occasion are from
the Faculty of Economics, with 8%. Students from the Faculty of Electrical Engineering, who have the lowest prevalence of cigarette use, consume
alcohol in a binge drinking pattern. The highest frequency of binge drinking in the past year and in the past month before the survey was among
respondents from the Faculty of Geography.
Conclusion 
There is a need for developing a conscience about all the effects that alcohol has, especially physical ones which are not usually noticed
immediately; taking responsibility for own actions; working on a healthy life style and educating people to enhance and improve their health control.

The discovery that sunlight can cure rickets was first scientifically confirmed in 1919. Shortly thereafter, in 1924, it was found that inactive lipids in the diet and skin are converted into antirachitic substances under the influence of UV light. Vitamin D (Vit D), also known as the "sunshine vitamin,"
was first identified in 1931. In recent decades, it has regained the focus of interest among the broader scientific community and dermatologists.
Specifically, certain dermatoses have been associated with low Vit D levels, leading to its supplementation in patients. On the other hand, some
dermatoses worsen with sun exposure, necessitating strict avoidance of sunlight and the therapeutic use of Vit D preparations.We are witnessing a
growing number of cases of melanoma and non-melanoma skin cancers, with excessive sun exposure being the primary etiological factor in most
cases. This paper provides a literature review on the historical discovery of Vit D and presents findings from studies examining Vit D levels not only in
various dermatoses but also in other diseases. The number of studies, as well as the spectrum of diseases in which the role of Vit D is being
investigated, continues to increase.

This article focuses on the sonographic axamination techique for evaluation of intracranial translucencies during the first trimester ultrasound scan. Appropriate knowledge of sonographic landmarks is the most important factor for evaluation normal as well as abnormal brain structure, and this examination may enable detection of open spina bifida and Arnold – Chiari anomaly at an early stage of fetal develpoment.

Thyroid hormones, thyroxine and triiodothyronine, affect the work of all organs and organ systems. Whether they are in excess or in deficit, they lead to significant disturbances in the homeostasis of the organism, changing first of all the metabolic processes and leading to significant clinical manifestations, primarily in the cardiovascular, but also in other organ systems. The imbalance of thyroid hormones also has oralmanifestations, which are often the reason why patients visit the dentist. However, what worries dentists the most is the possibility of acute decompensation of hyper or hypothyroidism, with the appearance of thyrotoxic storm or myxedema coma, which are life-threatening conditions. Therefore, a valid pre-procedural evaluation and preparation of patients with thyroid hormone function disorders for pre-planned dental interventions is of great importance. During dental procedures, it is necessary to adhere to recommendations regarding the choice of local anesthetics, hemostasis, drug interactions, the possibility of infection and minimizing stress, all in order to avoid acute decompensation of thyroid imbalance.

Introduction:

Diabetes insipidus (DI) is a disease that occurs due to inappropriate secretion of anti-diuretic hormone from the pituitary, or as a result of disorder in which the level of the kidneys cannot adequately respond to the secretion of this hormone. Also, it is known as central diabetes insipidus. The most common causes are head traumas, tumors of the hypothalamus and pituitary glands, inflammatory processes, histiocytosis, anomalies in the development of brain. It can appear in the form of familial diabetes insipidus or in certain syndromes (Wolfram syndrome). It is characterized by hypotonic polyuria higher than 3l/24h (which persists if even taking liquids stops), then by nocturia and compensatory polydipsia. Enuresis often occurs among children.

Case report:

A boy, aged 11, lives with his mother and brothers. Mother noticed that the boy was urinating frequently in last few months (diuresis 4.6 l/24h, and 3.25 l/24h). After two months, the boy developed double images and severe headaches, vomiting, inability to see, squinting in the right eye and headache in the back of the head. MNR of the endocranium indicates the presence of a tumor formation. The tumor was surgically removed, and the boy started with chemotherapy and radiotherapy. Due to persistent diabetes insipidus, the boy started using desmopressin-acetate - in tablet form. Active substance desmopressin - acts in the same way as the natural hormone vasopressin and regulates the kidney's ability to concentrate urine. The positive effect of taking the drug appeared after three weeks from the start of taking the therapy.

Conclusion:

Central (neurogenic) DI occurs as a result of a relative or absolute deficiency of antidiuretic hormone, which is responsible for the osmolality of body fluids. Based on this case, we want to show the importance of early diagnosis of the disease in order to improve the prognosis and the necessity of careful monitoring of these patients.