Associations between 25-Hydroxyvitamin D Levels and Body Composition in Young Adults
Vitamin D deficiency is associated with wide range of pathologies. Some evidences have shown that low vitamin D circulating levels are related to fat mass and obesity. The aim of this study was to assess the relationship between serum 25 (OH)D and body mass index, body composition in young adults. The study included 82 young people (age from 18 to 20 years). The concentration of 25-OH vitamin D in blood plasma and BMI were studied. The Body composition parameters were evaluated by bioimpedansometry. In 75.6% of the examined individuals, vitamin D deficiency of varying severity was revealed. The median BMI was 21.0 (19.6; 22.9) kg/m<sup>2</sup>; body fat mass 14.9 (10.8; 18.7) kg. All subjects with a deficiency and severe deficiency of vitamin D had higher BMI, body fat mass and the proportion of body fat mass than those who had a 25 (OH)D level above 20 ng/mL. We found a negative association of BMI and adipose tissue volume with 25 (OH)D level. According to logistic regression analysis, the effect of BMI on vitamin D availability was shown.