In this study in England (UK), 6,824 people who were 45 years old had a 25 hydroxy vitamin D test as part of a larger study. In women, but not men, vitamin D levels of 75-99 nmol/l was associated with a 7.7% risk of having Chronic Widespread Pain (CWP) vs. a 14.6% risk for those with levels under 75 nmol/l.
Although this does prove that low vitamin D contributes to having Fibromyalgia, it suggests that getting 2,000 units of vitamin D a day, the sunshine vitamin, may be optimal (get sunshine, not sunburn).
For more info on vitamin D and how it can save your life, see Vitamin D Could Save Your Life!
Vitamin D and chronic widespread pain in a white middle-aged British population: evidence from a cross-sectional population survey. Kate Atherton, Diane J Berry, Tessa Parsons, Gary J Macfarlane, Chris Power, and Elina Hypponen; Ann Rheum Dis, August 12, 2008.
Jacob Teitelbaum, M.D. is one of the world's leading integrative medical authorities on fibromyalgia and chronic fatigue. He is the lead author of four research studies on their treatments, and has published numerous health & wellness books, including the bestseller on fibromyalgia and chronic fatigue syndrome From Fatigued to Fantastic! and his newer The Fatigue and Fibromyalgia Solution. Dr. Teitelbaum is one of the most frequently quoted fibromyalgia experts in the world and appears often as a guest on news and talk shows nationwide including Good Morning America, The Dr. Oz Show, Oprah & Friends, CNN, and Fox News Health.