Low Serum Vitamin D3 Levels among Premenopausal Women with Uterine Fibroids: A Cross-Sectional Study

Background: Uterine fibroids are the most common benign tumors in women of reproductive age, with an incidence ranging from 5.4% to 77%, leading to significant morbidity and affecting quality of life. Earlier studies suggested that uterine fibroids are more likely to develop in those women with low levels of serum vitamin D. Subsequently, the objective of the current study was to investigate the association of serum vitamin D3 levels in premenopausal women with uterine fibroids. Methodology: A cross-sectional study was conducted at Indira IVF Hospital and Fertility Clinics located in India. The study was conducted from April 2022 to November 2022. In this study, a total of 160 women [80 cases and 80 controls] were enrolled. Women diagnosed with at least one uterine fibroid measuring 2 cm in size through a transvaginal scan were considered as cases, in comparison to healthy controls. Results: The mean serum vitamin D3 levels for the case and control groups were 10.85 ± 3.34 ng/ml and 19.64 ± 5.50 ng/ml, respectively. Serum vitamin D3 was significantly lower (P < 0.001) in women with uterine fibroids compared to healthy controls. Additionally, a significant association was observed between serum vitamin D3 levels and the number of fibroids in the case group (P < 0.001). This indicates that as the level of serum vitamin D3 decreases, the number of fibroids increases gradually. Conclusion: Our study suggests that women with uterine fibroids tend to have low serum vitamin D3 concentrations. Therefore, serum vitamin D3 concentration needs to be considered along with other risk factors in the treatment of uterine fibroids..