Interesting publication from 2001 that concluded the is no benefit to using aromatase inhibitors (AIs) in the context of PCa. Note that Dr. Charles "Snuffy" Myers is one of the co-authors. I was under the impression he was one of the docs recommending AIs to control Estardiol (E2). Perhaps I'm wrong about that. Or maybe he did some subsequent research and changed his mind.
There is very little information on AIs, controlling E2, and PCa, which makes me think that there is not much to it. Most people refer back to the Edward Friedman book (amazon.com/dp/B00BH0VP6A/re...), which talks about controlling the hormones, including E2. The biochemistry is way above my pay grade, but an AI falls into the category of probably-can't-hurt-and-might-even-help. My E2 was at the high end of normal (though proportional to high testosterone) so I started taking a very low-dose AI to lower E2.