It’s an extremely horrible idea. You need some estrogen in your life. Shit, I can imagine that this would inhibit gains, so yea, they would be slow and minimal as hell!
Uh…
Take what that guys says with a grain of salt… actually a whole bunch of salt. He just take a little info and comes to conclusions to make money selling his articles, I do not respect his writings very much.
Just reading a profile on Letrozole, health effects of estrogen or the boards will tell you he is an idiot and reckless for writing that article, among others.