"Carpal tunnel syndrome is the most common compressive neuropathy in the upper extremity, and most commonly develops in postmenopausal women."  At the October Conference for the American Society for Bone and 

Mineral Research, researchers presented preliminary results from a Korean study that indicated that women younger than age 50 undergoing release surgery for carpal tunnel syndrome had lower vitamin D levels than age-matched controls, although there was no similar association for older women. Additional studies will be needed to clarify the potential role of vitamin D in the pathogenesis of carpal tunnel syndrome, and to explain the age difference seen in this study, the researchers concluded.  Click here for the full story.