Prevalence of Vitamin D deficiency and its association with lower urinary tract symptoms among women in Saudi Arabia.

Background: Vitamin D deficiency is highly prevalent globally and has been linked to lower urinary tract symptoms (LUTS). In Saudi Arabia, this relationship in women has not been fully explored. Methodology: A cross-sectional study was conducted among 386 Saudi women aged ≥18 years using a self-administered online survey. Data included sociodemographics, LUTS (assessed via the Bristol Female LUTS questionnaire), and self-reported Vitamin D status and supplementation. Associations between Vitamin D deficiency and LUTS were analyzed using Chi-square tests. Results: Physician-diagnosed Vitamin D deficiency was reported in 82.4% of participants. Severe deficiency was observed in 30.2%, moderate in 27.4%, and mild in 19.5%. Significant associations were found between severe deficiency and delayed urination (50.0% never experienced vs. 66.4% in mild/moderate deficiency and 71.2% in normal Vitamin D; Conclusion: Vitamin D deficiency affects 82.4% of Saudi women, increasing the odds of delayed urination and straining to void by 1.5-1.8 times. Supplementation improved urinary symptoms in 49.4% of women, often requiring more than 2 months, emphasizing the need for routine screening, tailored supplementation, and public health interventions to reduce LUTS.