Changes in Vitamin D Levels According to Age, Gender and Season in the Siirt Province

Abstract

Objective: This study aims to determine the 25-hydroxyvitamin D [25(OH)DI profile of the region based on season, age and gender by examining the vitamin D levels of patients who applied to the Siirt Training and Research Hospital from Siirt and neighbouring provinces. Materials and Methods: (25(OH)DJ levels were analysed retrospectively in patients who applied to Siirt Training and Research Hospital. The study included 31,151 patients who were admitted to the hospital. Were included in the study. (25(OH)DJ levels were determined according to the age and gender of patients and the seasons of the year. A serum [25(OH)D] level <12 ng/mL was considered as serious deficiency, 12-20 ng/mL mild-to-moderate deficiency, 21-30 ng/mL insufficiency, >30 ng/mL sufficiency. Results: The average (25(OH)DJ level in patients aged 0-15 years (n=6,166) was 20.59 +/- 0.14 ng/mL, in patients aged 16-30 years (n=10,791) it was 15.65 +/- 0.10 ng/mL, in patients aged 31-45 years (n=6,649) it was 16.28 +/- 0.14 ng/mL, in patients aged 46-60 years (n=4,120) it was 16.83 +/- 0.23 ng/mL and in patients ages 61-75 years (n=2,597) it was 16.03 +/- 0.15 ng/mL. Conclusion: It has been observed that [25(OH)D] level, which is low in winter and spring, is high in summer and autumn when it is exposed to the intense rays of the sun. However, this level is lower than the desired levels in all four seasons. This low level of vitamin D may be related to the absence of almost any vitamin D synthesis in winter and inadequate vitamin D intake associated with foods.