The following statement by Dr. Phyllis Mullenix, Ph.D. is significant because sleep disturbances are a major problem with fibromyalgia sufferers.
"The new data showing fluoride's impact on melatonin biosynthesis, and the high concentrations in the human pineal gland, should be a real eye opener for many. I am ill at ease with this enzyme poison (fluoride) being that close to the hypothalamic-pituitary-axis functions in the body."
http://fluoridealert.org/pmullenix.htm
Fluoride exposed children have been found to have kidney and liver damage. The body's inability to filter out or detoxify certain chemicals could be a part of the fibromyalgia syndrome:
http://www.fluoridealert.org/health/news/30.html