Bottom line, esp w/ women, there just isnt' enough known about really being able to balance hormones and estrogen does have a purpose in the female body, so if you try to limit it for the purpose of fat loss, you may also encounter issues due to lack of estrogen. That's *IF* whatever you are thinking of using actually works. Anti-e's like arimidex, etc are generally just way to strong for women & just not right.
It would be great if we could manage our hormone levels for these goals, but there are other ways to lose bodyfat other than messing w/ estrogen. Not to mention relying on pills to accomplish it creates the wrong expectations & behaviors.