Relationship Between Vitamin D Level and DNA Fragmentation Index of Sperm in Men Referred to Omid Infertility Center in Hamadan-Iran: A Cross-Sectional Study.
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Abstract
Objective: Unfortunately, the prevalence of infertility in Iran and the world is increasing. There is limited research on the relationship between vitamin D and DNA fragmentation index (DFI). DFI is a measure of DNA damage in sperm cells and is used to evaluate male fertility. Some studies suggest that vitamin D may play a role in sperm health and fertility.
Materials and methods: In this cross-sectional study, 789 eligible men referred to the Omid Infertility Clinic in Hamadan-Iran in 2021-2023. Serum levels of vitamin D, DFI, spermogram indexes and demographic characteristics (occupation, age, and body mass index) were collected by face-to-face interview and records review in case files. Data were analyzed with SPSS version 27 software.
Results: There is no significant relationship between DFI and vitamin D before and after removing the effect of confounding variables. Clearly, increasing age has been associated with increasing (DFI 95% Cl: 1.06-3.03; p<0.05) odds ratio (OR) = 1.79. The relationship between the increase in DFI and the decrease in normal sperm morphology (95% CI: 1.43-4.20; p<0.01) OR = 2.45 and the decrease in the progressive motility of sperm was seen (95% Cl: 1.66-4.87; p<0.05) OR= 2.85 and also. The relationship between DFI and the decrease in sperm count after removing the effect Confounding variables were observed (95%Cl: 1.06-8.38; p<0.05) OR=2.98.
Conclusion: No correlation between DFI and vitamin D serum level was found. However, a clear association was observed between increased DFI and advanced age, reduced progressive motility, abnormal sperm morphology, and decreased sperm count.
期刊介绍：
The Journal of Family & Reproductive Health (JFRH) is the quarterly official journal of Vali–e–Asr Reproductive Health Research Center. This journal features fulllength, peerreviewed papers reporting original research, clinical case histories, review articles, as well as opinions and debates on topical issues. Papers published cover the scientific and medical aspects of reproductive physiology and pathology including genetics, endocrinology, andrology, embryology, gynecologic urology, fetomaternal medicine, oncology, infectious disease, public health, nutrition, surgery, menopause, family planning, infertility, psychiatry–psychology, demographic modeling, perinatalogy–neonatolgy ethics and social issues, and pharmacotherapy. A high scientific and editorial standard is maintained throughout the journal along with a regular rate of publication. All published articles will become the property of the JFRH. The editor and publisher accept no responsibility for the statements expressed by the authors here in. Also they do not guarantee, warrant or endorse any product or service advertised in the journal.
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