To the Editor.
—The article by Coindre et al1 in the January 1986 issue of the Archives and the corresponding editorial by Perry2 have indicated that thyroid hormone therapy may cause increased bone loss. It is important to know that these hormones are very often administered to postmenopausal women. However, the relationship between thyroid hormones and osteopenia can also be approached from a different point of view.We have been dealing with the investigation of the clinical features and therapy of postmenopausal osteoporosis. The selection criteria for our patients have been very strict, ie, for the diagnosis it was indispensable for the patients to have had menopause at any age (maximum, 15 years ago), decreasing body height, at least one osteoporotic compressed vertebra, and reduced bone mineral content of the radius as measured by single photon absorptiometry (Norland-Cameron BMA 178). In every case, other