TR
EN
Vitamin D status in 187,728 women in a tertiary hospital: effects of age and season
Abstract
Aim: The aim of our study was to determine whether women admitted to our hospital for any reason have 25-hydroxyvitamin D (25(OH)D) deficiency and to determine whether there is a difference between serum 25(OH)D levels according to age and seasons.
Materials and Methods: 187,728 female patients admitted to our hospital in winter and summer between 2020 and 2024 were included in the study. Ages, serum 25(OH)D levels, month and season of the examinations were recorded. Serum 25(OH)D levels: >30 ng/ml was considered adequate, 20-30 ng/ml vitamin D deficiency, <20 ng/ml vitamin D deficiency, 11-20 ng/ml mild vitamin D deficiency, 5-10 ng/ml moderate vitamin D deficiency, <5 ng/ml severe vitamin D deficiency. SPSS 28.0 programme was used for statistical analysis and p<0,005 was considered significant.
Results: In this study, serum 25(OH)D levels of 187,728 patients aged 10-99 years were evaluated and the mean level was 18,7±11,9 (3-100) ng/ml. Serum 25(OH)D level was found to be adequate in 13,6%, inadequate in 24,1%, mildly deficient in 37,5%, moderately deficient in 21,3%, and severely deficient in 3,6% of the patients. Serum 25(OH)D level was significantly (p<0,05) higher in summer-autumn season than in winter-spring season.
Conclusion: 25(OH)D deficiency is a common problem in our country as well as in the world. Serum vitamin D levels are affected by seasonal transitions and may be lower in winter. Although routine screening of serum vitamin D levels is not recommended, it may be recommended to develop strategies to improve vitamin D status in all age groups as in pregnant women.
Keywords
References
- 1 Forrest KYZ, Stuhldreher WL. Prevalence and correlates of vitamin D deficiency in US adults. Nutr Res 2011; 31(1): 48–54. 2 Holick MF. Vitamin D deficiency. N Engl J Med 2007; 357(3): 266–81. 3 Sözen T. D hormonu: Güncel gelişmeler, Hacettepe Tıp Dergisi 2011; 42:14- 27.
Details
Primary Language
English
Subjects
Obstetrics and Gynaecology
Journal Section
Research Article
Publication Date
September 30, 2025
Submission Date
January 10, 2025
Acceptance Date
March 5, 2025
Published in Issue
Year 2025 Volume: 22 Number: 3
APA
Yıldız, P., & Kahyaoğlu, B. (2025). Vitamin D status in 187,728 women in a tertiary hospital: effects of age and season. Jinekoloji-Obstetrik Ve Neonatoloji Tıp Dergisi, 22(3), 306-310. https://doi.org/10.38136/jgon.1617189
AMA
1.Yıldız P, Kahyaoğlu B. Vitamin D status in 187,728 women in a tertiary hospital: effects of age and season. Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi. 2025;22(3):306-310. doi:10.38136/jgon.1617189
Chicago
Yıldız, Pınar, and Beyzanur Kahyaoğlu. 2025. “Vitamin D Status in 187,728 Women in a Tertiary Hospital: Effects of Age and Season”. Jinekoloji-Obstetrik Ve Neonatoloji Tıp Dergisi 22 (3): 306-10. https://doi.org/10.38136/jgon.1617189.
EndNote
Yıldız P, Kahyaoğlu B (September 1, 2025) Vitamin D status in 187,728 women in a tertiary hospital: effects of age and season. Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi 22 3 306–310.
IEEE
[1]P. Yıldız and B. Kahyaoğlu, “Vitamin D status in 187,728 women in a tertiary hospital: effects of age and season”, Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi, vol. 22, no. 3, pp. 306–310, Sept. 2025, doi: 10.38136/jgon.1617189.
ISNAD
Yıldız, Pınar - Kahyaoğlu, Beyzanur. “Vitamin D Status in 187,728 Women in a Tertiary Hospital: Effects of Age and Season”. Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi 22/3 (September 1, 2025): 306-310. https://doi.org/10.38136/jgon.1617189.
JAMA
1.Yıldız P, Kahyaoğlu B. Vitamin D status in 187,728 women in a tertiary hospital: effects of age and season. Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi. 2025;22:306–310.
MLA
Yıldız, Pınar, and Beyzanur Kahyaoğlu. “Vitamin D Status in 187,728 Women in a Tertiary Hospital: Effects of Age and Season”. Jinekoloji-Obstetrik Ve Neonatoloji Tıp Dergisi, vol. 22, no. 3, Sept. 2025, pp. 306-10, doi:10.38136/jgon.1617189.
Vancouver
1.Pınar Yıldız, Beyzanur Kahyaoğlu. Vitamin D status in 187,728 women in a tertiary hospital: effects of age and season. Jinekoloji-Obstetrik ve Neonatoloji Tıp Dergisi. 2025 Sep. 1;22(3):306-10. doi:10.38136/jgon.1617189