
Originally Posted by
Deep_Fried
Test can convert to both Estrogen or DHT depnding on your levels of Aromatase and 5 Alpha Reductase (5AR).
You used a very powerful AI (Letrozole) that probably reduced your aromatase levels too drastically.
How does this afect your hair you ask?
Well, with that much more free Testosterone NOT converting to Estrogen via Aromatase, you are left with a much greater footprint of Test for 5AR to utilize in conversion to DHT.
Its all about balance. You need to look at the "WHOLE" cascade of events that you put in to motion with each change.