IntroductionAging is associated not only with bone loss but also with increases in bone marrow adipocytes. Since osteoblasts and adipocytes are derived from a common precursor, it is possible that with aging, there is a preferential “switch” in commitment of this precursor to the adipocyte over the osteoblast lineage. We tested the hypothesis that the apparent “age-related” increase in marrow adipocytes is due, at least in part, to estrogen (E) deficiency.
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