Low Vitamin D Levels, Uterine Fibroids Connected

Researchers randomly selected 620 black and 410 white women, ages 35 to 49, and determined their vitamin D levels with blood tests and their health status with questionnaires. Their analysis appears in the May issue of Epidemiology.

About two-thirds of the women had fibroid tumors. In the entire group, only 10 percent of the black women and 50 percent of white women had vitamin D levels above 20 nanograms per milliliter, generally considered an adequate level.

After adjusting for age, physical activity, sun exposure and other variables, they found that having a vitamin D level above 20 decreased the risk for fibroids by 32 percent, and that each increase of 10 nanograms per milliliter in vitamin D was associated with a 20 percent lower risk of having a fibroid tumor.

Image: Vitamin D supplements, via Shutterstock

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