Kenneth R. Phelps, MD
To the Editors: Dawson-Hughes and colleagues (1) found comparable increases in lumbar vertebral density from June-July through December-January (period 1) in women who received either placebo or vitamin D. Bone density declined during the other half-year (period 2) in both treatment groups, but it declined less in the vitamin D-treated women. At 1 year, there was a net improvement in subjects given vitamin D and no change in those given placebo. These investigators imply, in their title and text, that "bone loss" was forestalled by vitamin D supplementation during period 2.
I suspect that bone per se was neither gained
Phelps KR. Bone Loss in Menopausal Women. Ann Intern Med. ;116:775. doi: 10.7326/0003-4819-116-9-775_1
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Published: Ann Intern Med. 1992;116(9):775.
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