The serum estradiol concentration and bone mineral content of the right radius were determined in 34 postmenopausal females. Regression analysis showed a significant positive correlation between the serum estradiol concentration and bone mineral content of the right radius (r=0.477, p less than 0.01). These results support the view that the decreased level of serum estrogens is one of the major factors involved in the loss of bone mass with age.
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