In simplistic terms, I would say that the point-of-no-return, is when you permanently lose anything that you had hoped to get back.
If aromatization takes over, permanently, there is no going back (or so I have heard).
My question would be -- if one has lost all or part of their erectile abilities, will they recover their abilities upon cessation of BO? Same question with viable sperm.
For me, erectile difficulties and clear ejaculate happened very quickly and simultaneously, after only three days of dosing.
First day was 250mg, second and third day were 500mg. The next day, I discontinued the use of BO because the rapid onset of these symptoms was rather startling.
This was around 4-6 weeks ago. I think that my breasts may be growing at a slow pace now, without BO. Erections and ejaculate have remained as they were on the first day of discovery. I will be observing over the next few months to see what happens.