Isfahan University of Medical Sciences Journal of Isfahan Medical School 1027-7595 42 762 2024 05 21 Correlation of Serum Vitamin D Level of Pregnant Women with Preterm Delivery a Systematic Review Study Correlation of Serum Vitamin D Level of Pregnant Women with Preterm Delivery a Systematic Review Study 263 271 31216 10.48305/jims.v42.i762.0263 FA Somaeyh Khajeh MSc Student in Midwifery, Student Research Committee, School of Medicine, Gonabad University of Medical Sciences, Gonabad, Iran 0009-0009-8551-3596 Rasool Rahmani MSc Student in Nutrition, Nutrition, School of Nutrition Sciences, Tabriz, Iran Journal Article 2023 07 12 <strong>Background:</strong><em> </em>The serum level of vitamin D on preterm delivery has been investigated in a number of studies, and this relationship is still debatable. The present study was conducted to systematically review the studies conducted in the region of the relationship between serum levels of vitamin D in mothers and preterm delivery. <strong>Methods:</strong><strong> </strong>In this systematic review to find related studies, the English databases PubMed, Google Scholar, Web of Science, SID, and Magiran, which were published from 2015 to 2023. The quality of the articles was assessed using the Newcastle-Ottawa checklist. <strong>Findings:</strong><strong> </strong>A qualitative evaluation of the remaining 55 articles was performed after reviewing the title, abstract, and text. Finally, 9 articles were included in the systematic review. According to the results of the studies, there is a relationship between the serum level of vitamin D and premature birth. <strong>Conclusion:</strong> Low serum levels of vitamin D are significantly associated with an increased risk of preterm delivery. <strong>Background:</strong><em> </em>The serum level of vitamin D on preterm delivery has been investigated in a number of studies, and this relationship is still debatable. The present study was conducted to systematically review the studies conducted in the region of the relationship between serum levels of vitamin D in mothers and preterm delivery. <strong>Methods:</strong><strong> </strong>In this systematic review to find related studies, the English databases PubMed, Google Scholar, Web of Science, SID, and Magiran, which were published from 2015 to 2023. The quality of the articles was assessed using the Newcastle-Ottawa checklist. <strong>Findings:</strong><strong> </strong>A qualitative evaluation of the remaining 55 articles was performed after reviewing the title, abstract, and text. Finally, 9 articles were included in the systematic review. According to the results of the studies, there is a relationship between the serum level of vitamin D and premature birth. <strong>Conclusion:</strong> Low serum levels of vitamin D are significantly associated with an increased risk of preterm delivery. https://jims.mui.ac.ir/article_31216_c17d923ee20f8a125139fe2dc0054ff1.pdf