From http://www.xs4all.nl/~fredb/FibroHypo/

Sorry in dutch, but copied a part of the essence.



In studying patients with diagnosed fibromyalgia, Dr. Lowe ran thyroid 
function tests on each patient.

Those with elevated TSH levels (indicating hypothyroidism) did not undergo 
TRH stimulation tests. Those who had normal TSH levels were subsequently 
also given a TRH stimulation test.

Of the patients studied:
10.5% had primary hypothyroidism.
36.8% were diagnosed as euthyroid (in normal thyroid state)
52.6% had results, via the TRH test, that were consistent with central 
hypothyroidism.

Overall, the results of this analysis suggest that approximately 64% of 
fibromyalgia patients had thyroid hormone deficiencies. And interestingly, 
the level of primary hypothyroidism found among FMS patients is 10.5 times 
higher than what you'd expect to find in the general population.

Uit 'the metabolic treatment of fibromyalgia' door John Lowe