My reasoning goes like this.....epi is antagonistic to estro in the first place (since its a DHT derivative of course), so you would expect some protection straight off the bat.....your test is gonna be tanked in short order, so there shouldn't be any aromatization of test either endogenous or exogenous into estro....and this is where most elevated estro comes from, your test or exogenous test aromatizing....now some of use are like women, and we make a lot of estrogen on our own, not sure if that is from aromatization or is just a product of a fcked up male endocrine system....I just can't find any source that could cause elevated estro, you know? Where is it coming from? Unless when your test is tanked, it throws off your system, and it produces more estrogen due to the imbalance/non-existent test....not sure...