[On the question of the application of calcium preparations for the purpose of optimizing the diets of the population, including and for different diseases].

In recent years, there has been a particular interest in the use of calcium in order to optimize the diet of the population. It is known that calcium, indirectly affecting nervous excitability, muscle contractility, hormone secretion and blood clotting, plays an important role in the human body. However, there is an opinion about the risks of calcium supplement intake, and concerns about possible adverse consequences are becoming more pronounced. In this regard, the aim of this study was to review the scientific literature on calcium supplement intake from the standpoint of the effectiveness of fortification of food rations and the occurrence of concomitant risks. Results. The results of the analysis of numerous literature data allow us to conclude that due to the threat of calcium overdose and an increased risk of cardiovascular complications as a result of transient hypercalcemia, calcium intake from dietary sources is a priority, and calcium supplements should be prescribed only to patients with a serious risk of osteoporotic fractures and those individuals who, due to social reasons, cannot meet their daily nutritional needs. With equal effects, calcium consumption precisely from foods containing a sufficient amount of this micronutrient, in comparison with calcium supplements, provides the organism with other nutrients (proteins, amino acids, etc.), without causing risks of side effects. It can be assumed that the results of risk-benefit assessments of calcium supplements in connection with the descriptions of risks to the cardiovascular, gastrointestinal, and urinary-excretory systems cannot be considered final. In view of the above, cautious use of calcium supplements is recommended, especially considering their possible interaction with various medications, including antihypertensive drugs, calcium channel blockers, synthetic thyroid hormones, bisphosphonates and antibiotics, etc. Conclusion. Given the growing concern of the medical community about the role of calcium intake and the conflicting results of individual studies, it is clear that largescale prospective cohort studies are needed to clarify the balance of benefits and risks of calcium supplementation in different populations, especially in the elderly.