This is because vitamin D reduces systemic inflammation and systemic inflammation increases nociception and allodynia. Despite what some clinicians have said, fibromyalgia is an inflammatory disorder with clear elevation of IL-1b, IL-2, IL-6, TNF-a and IFN-g as well as changes in IL-13. All people with fibromyalgia should take 5000-10,000IU daily and they will notice a significant reduction in pain levels (but alas, not a cure).
“One pill every two weeks fights diabetes, cancers, heart failure, and 18 other diseases.”