I've never tried this, but apparently sage decreases blood estrogen levels. (birthwithoutfearblog.com)
So the more weight that a woman gains, the higher blood estrogen levels become. (consumerhealthdigest.com)
The most common cause of non-regenerative anemia in ferrets is elevated blood estrogen levels in unspayed female ferrets undergoing prolonged heat periods (estrus or breeding cycles). (2ndchance.info)