We interviewed 300 white postmenopausal women (160 with thyroid diseas
e, 140 without thyroid disease) to investigate whether having thyroid
disease or taking thyroid hormone increased the prevalence of having a
hip, vertebral, or forearm fracture. Thirty-seven (23%) women with th
yroid disease and 45 (32%) women without thyroid disease had had a fra
cture, and there were no significant differences between these groups
in the number or type of fractures. Dose of thyroid hormone and durati
on of therapy or disease did not affect fracture occurrence in women w
ith thyroid disease. Women with a history of hyperthyroidism (9 of 32)
or thyroid cancer (2 of 11) appeared to have their first fracture ear
lier (p < 0.01) than women without thyroid disease. In summary, women
taking thyroid hormone for a variety of thyroid disorders do not appea
r to have an enhanced prevalence of a hip, vertebral, or forearm fract
ures, but women with a history of hyperthyroidism may have a propensit
y for their fractures to occur earlier in life.