date:Apr 16, 2013
ersity of South Carolina screened participants for fibroids using ultrasound. Blood samples were used to measure the primary circulating form of vitamin D, know as 25-hydroxy D. Subjects with more than 20 nanograms per milliliter of 25-hydroxy D were categorized as sufficient.
Participants then completed a questionnaire on sun exposure. Those who reported spending more than one hour outside per day also had decreased risk of fibroids, estimated at a 40% reduction. Although fewer black women th