11.   Just as estrogen is important to bone health in women, testosterone is important to bone health in men.

12.   Nor can natural progesterone be administered through a skin patch, the way that estrogen is.

13.   Perhaps the biggest unanswered question is whether estrogen is more effective than the standard treatments for postpartum depression, namely antidepressants and psychotherapy.

14.   Plant estrogens are a common ingredient in preparations like licorice root, ginseng and dandelion extract.

15.   That came as a surprise to many researchers who had believed estrogen was the primary culprit in the breast cancer-hormone link.

16.   The estrogen used was one milligram of estradiol, the most potent of the many forms of estrogen.

17.   The data are far from conclusive, and few would conclude at this point that estrogen was dangerous.

18.   The new study may accelerate what already is a slowly changing climate of opinion that estrogen may be safe for breast cancer survivors after all, Berkowitz said.

19.   The other estrogens were labeled biproducts or impurities, and the agency limited their presence in Premarin.

20.   The other estrogens were labeled byproducts or impurities, and the agency limited their presence in Premarin.