Araştırma Makalesi

Prevalence of Vitamin D Deficiency in Early Pregnancy: A Cross-Sectional Study at a Tertiary Care Center

Cilt: 13 Sayı: 1 29 Nisan 2026
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Prevalence of Vitamin D Deficiency in Early Pregnancy: A Cross-Sectional Study at a Tertiary Care Center

Öz

Vitamin D plays a crucial role in calcium metabolism, immune regulation, and cell growth. Deficiency during early pregnancy may adversely affect maternal and fetal health. The aim of this study was to determine the prevalence of vitamin D deficiency and related factors in pregnant women in their first trimester who attended a tertiary care center in Istanbul. A total of 1105 pregnant women who attended the antenatal clinic between January 2020 and January 2024 were retrospectively analyzed. Vitamin D status was classified as sufficient, insufficient, and deficient. Vitamin D deficiency was further categorized as mild, moderate and severe. Serum 25(OH)D levels were analyzed according to age, season, and month. The median age of participants was 29 years (range 17–50), and the median serum 25(OH)D level was 11.1 ng/mL (mean ± SD: 13.7 ± 9.2). Vitamin D deficiency (<20 ng/mL) was detected in 78.5% of participants. The lowest levels were observed in winter (median 9.1 ng/mL), and the highest levels were observed in summer (median 11.95 ng/mL).Vitamin D levels were significantly lower in individuals under 30 years of age compared with those aged 30 years and older. In seasonal grouping, vitamin D levels were also significantly lower in the winter–spring period compared to the summer–autumn period. The findings show that vitamin D levels are lower, especially among young pregnant women and during winter months, highlighting the need for monitoring and appropriate preventive strategies for vitamin D deficiency and insufficiency in these groups.

Anahtar Kelimeler

Destekleyen Kurum

None

Etik Beyan

Ethical approval for the study was obtained from the Istanbul Kartal Dr. Lütfi Kırdar City Hospital Ethics Committee (dated 24 April 2024, reference no: 2024/010.99/3/6).

Kaynakça

  1. Mulligan ML, Felton SK, Riek AE, et al. Implications of vitamin-D deficiency in pregnancy and lactation. Am J Obstet Gynecol. 2010;202(5):429.e1-429.e9.
  2. Shrestha D, Budhathoki S, Pokhrel S, et al. Prevalence of vitamin-D deficiency in pregnant women and their babies in Bhaktapur, Nepal. BMC Nutr. 2019;5(1):31.
  3. Bodnar LM, Simhan HN, Catov JM, et al. Maternal vitamin-D status and the risk of mild and severe preeclampsia. Epidemiology. 2014;25(2):207-214.
  4. Dror DK. Vitamin-D status during pregnancy: maternal, fetal, and postnatal outcomes. Curr Opin Obstet Gynecol. 2011;23(6):422-426.
  5. Scholl TO, Chen X, Stein P. Maternal vitamin-D status and delivery by cesarean. Nutrients. 2012;4(4):319-330.
  6. Khalessi N, Kalani M, Araghi M, et al. The relationship between maternal Vitamin-D deficiency and low birth weight neonates. J Family Reprod Health. 2015;9(3):113-117.
  7. Dawodu A, Wagner CL. Prevention of vitamin-D deficiency in mothers and infants worldwide - a paradigm shift. Paediatr Int Child Health. 2012;32(1):3-13.
  8. Camargo CA, Ingham T, Wickens K, et al. Cord-blood 25-hydroxyvitamin-D levels and risk of respiratory infection, wheezing, and asthma. Pediatrics. 2011;127(1):180-187.

Ayrıntılar

Birincil Dil

İngilizce

Konular

Klinik Tıp Bilimleri (Diğer)

Bölüm

Araştırma Makalesi

Yayımlanma Tarihi

29 Nisan 2026

Gönderilme Tarihi

29 Aralık 2025

Kabul Tarihi

6 Nisan 2026

Yayımlandığı Sayı

Yıl 2026 Cilt: 13 Sayı: 1

Kaynak Göster

APA
Kahyaoğlu, B., Temoçin, R. B., Yılmaz, A., Yıldız, P., Mat, E., & Şanlıkan, F. (2026). Prevalence of Vitamin D Deficiency in Early Pregnancy: A Cross-Sectional Study at a Tertiary Care Center. Muğla Sıtkı Koçman Üniversitesi Tıp Dergisi, 13(1), 116-121. https://doi.org/10.47572/muskutd.1851024
AMA
1.Kahyaoğlu B, Temoçin RB, Yılmaz A, Yıldız P, Mat E, Şanlıkan F. Prevalence of Vitamin D Deficiency in Early Pregnancy: A Cross-Sectional Study at a Tertiary Care Center. MMJ. 2026;13(1):116-121. doi:10.47572/muskutd.1851024
Chicago
Kahyaoğlu, Beyzanur, Rezzan Berna Temoçin, Aylin Yılmaz, Pınar Yıldız, Emre Mat, ve Fatih Şanlıkan. 2026. “Prevalence of Vitamin D Deficiency in Early Pregnancy: A Cross-Sectional Study at a Tertiary Care Center”. Muğla Sıtkı Koçman Üniversitesi Tıp Dergisi 13 (1): 116-21. https://doi.org/10.47572/muskutd.1851024.
EndNote
Kahyaoğlu B, Temoçin RB, Yılmaz A, Yıldız P, Mat E, Şanlıkan F (01 Nisan 2026) Prevalence of Vitamin D Deficiency in Early Pregnancy: A Cross-Sectional Study at a Tertiary Care Center. Muğla Sıtkı Koçman Üniversitesi Tıp Dergisi 13 1 116–121.
IEEE
[1]B. Kahyaoğlu, R. B. Temoçin, A. Yılmaz, P. Yıldız, E. Mat, ve F. Şanlıkan, “Prevalence of Vitamin D Deficiency in Early Pregnancy: A Cross-Sectional Study at a Tertiary Care Center”, MMJ, c. 13, sy 1, ss. 116–121, Nis. 2026, doi: 10.47572/muskutd.1851024.
ISNAD
Kahyaoğlu, Beyzanur - Temoçin, Rezzan Berna - Yılmaz, Aylin - Yıldız, Pınar - Mat, Emre - Şanlıkan, Fatih. “Prevalence of Vitamin D Deficiency in Early Pregnancy: A Cross-Sectional Study at a Tertiary Care Center”. Muğla Sıtkı Koçman Üniversitesi Tıp Dergisi 13/1 (01 Nisan 2026): 116-121. https://doi.org/10.47572/muskutd.1851024.
JAMA
1.Kahyaoğlu B, Temoçin RB, Yılmaz A, Yıldız P, Mat E, Şanlıkan F. Prevalence of Vitamin D Deficiency in Early Pregnancy: A Cross-Sectional Study at a Tertiary Care Center. MMJ. 2026;13:116–121.
MLA
Kahyaoğlu, Beyzanur, vd. “Prevalence of Vitamin D Deficiency in Early Pregnancy: A Cross-Sectional Study at a Tertiary Care Center”. Muğla Sıtkı Koçman Üniversitesi Tıp Dergisi, c. 13, sy 1, Nisan 2026, ss. 116-21, doi:10.47572/muskutd.1851024.
Vancouver
1.Beyzanur Kahyaoğlu, Rezzan Berna Temoçin, Aylin Yılmaz, Pınar Yıldız, Emre Mat, Fatih Şanlıkan. Prevalence of Vitamin D Deficiency in Early Pregnancy: A Cross-Sectional Study at a Tertiary Care Center. MMJ. 01 Nisan 2026;13(1):116-21. doi:10.47572/muskutd.1851024