Guys just a general note here: All this speculation about celebs having PFS seems to be getting out of hand. At least in my opinion. We should be cautious the way these assumptions come across do not cause us more harm than good.
It is highly unlikely Justin Bieber or Michael Jackson actually had PFS. Michael Jackson was a scrawny looking man in the early nineties, way before finasteride got to the market. Justin Bieber is one of the most overworked performers on earth. All these artists go through phases like these.
PFS may be under recognised and numbers are probably way higher than we know, but the majority of people do not use finasteride or 5ARI’s, and the majority of finasteride users do not get PFS.