Skin anti-aging strategies
ncbi.nlm.nih.gov
ncbi.nlm.nih.gov
The Women's Health Initiative studied replacing women's declining hormone levels with horse estrogens (Premarin, derived from PREgnant MARe's urINe) and Provera, the birth-control drug that is used to make women infertile (as the much-loved [1] drug, depot-Provera).
Somebody tricked the medical scientists into thinking that Progestins are analogues of Progesterone, except in the case of in vitro fertilization, where they have to use Progesterone USP.