Vitamin D status of the Russian reproductive population over the past 10 years: a systematic review

Vitamin D deficiency is a public health problem in Russia. Insufficient supply of vitamin D negatively affects reproductive health, the degree of risk depends directly on the severity of the deficiency. Russia is the largest country in terms of area, so it is important to know the real level of vitamin supply at the regional level. There is a need to obtain an up-to-date picture of the provision of the country's population with vitamin D in order to minimize health risks and develop preventive measures at the regional or national level. The study was conducted in accordance with Preferred Reporting Items for Systematic reviews and Meta-Analysis (PRISMA) standards. 1659 studies were analyzed and 19 studies met the inclusion criteria. The analysis of the selected articles showed that vitamin D deficiency is widespread in Russia. There is a need for a constant and systematic determination of the concentration of vitamin D in order to assess the ongoing preventive measures and develop corrective actions in different risk groups: pregnant women, the population of the Arctic, the adult reproductive population, elderly people and children.