January 18, 2026
Low Vitamin D Linked to Uterine Fibroid Risk
A 2013 study by the National Institute of Environmental Health Sciences found that maintaining Vitamin D levels above 20 ng/mL reduced uterine fibroid risk by 32%, with each 10 ng/mL increase correlating to a 20% lower risk after controlling for age, activity, and sun exposure.
Key Takeaways
Vitamin D Levels and Fibroid Risk Reduction
Research shows insufficient Vitamin D (below 20 ng/mL) correlates with a 32% higher risk of uterine fibroids. Maintaining adequate levels through sun exposure, diet, or supplements may mitigate this risk.
Impact of 10 ng/mL Vitamin D Increase on Fibroid Risk
Every 10 ng/mL rise in Vitamin D blood levels reduces fibroid risk by 20%, emphasizing the importance of monitoring and optimizing Vitamin D for reproductive health.
Role of Vitamin D in Reproductive Health
Beyond fibroids, Vitamin D supports oocyte quality, embryo development, and pregnancy success. Experts suggest sufficient levels likely benefit multiple reproductive outcomes.
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