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About stumpfwe@email.unc.edu

Walter E Stumpf, MD, PhD was a Professor of Cell Biology and Pharmacology at the University of North Carolina, Chapel Hill. In 1979, Stumpf developed a method to discover what tissues vitamin D targets. He studied vitamin D for several decades, among other things. He passed away in 2012. His full background can be found at walterstumpf.com.

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Low vitamin D status may affect menstrual cycle length in women

A recent study determined that lower vitamin D levels are associated with a nearly 3 times increased risk of longer menstrual cycles.

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