I am aware it converts to Estrone (E1), I have had high readings of E1 with low E2 before while on EQ.
I dont think its the E1 that is competing for Aromtase, its very weak. Though the competition theory works just as well in my mind to explain EQ and low E2, either or take your pick. Going to drop the reddit link, people can check it out or not, there is a youtube video too if anyone prefers it.
"In a nutshell, he concludes that one of Boldenone's (
structure) major metabolites competitively inhibit Aromatase. First, Boldenone converts to Androstadienedione (aka
Boldione;
structure) via enzyme 3ß-HSD, and then is converted to Estrone (E1,
structure) via Aromatase.
The phenomenon we observe likely comes from
Boldione having a greater binding affinity to aromatase, and therefore occupying the most spots in our E2 production, producing primarily E1 (which is not preferred), therefore slowly diminishing the supply of E2. This also explains why the low E2 effects don't occur immediately, it requires your baseline E2 to naturally diminish and for Boldenone to slowly convert to
Boldione until you reach a point where
Boldione is able to dominate competition at aromatase with both Boldenone and Testosterone."
The further I went down this rabbit hole, the more I shifted to confirmation bias over actual understanding. Seems it lowers E2 a considerable amount for a lot of people, for now I will let that be enough and enjoy some Testosterone.
Google search EQ (Equipoise), Estrogen, and AI effects, first reddit page that pops up.