No one has any idea. My guess is most of the problems are related to neurosteroids being inhibited because finasteride ends up inhibiting the 5-ar type 3 along with the type 2 enzyme they targeted. Although finasteride sets off a cascade of hormone changes so could be any of them really. We probably will never know for sure before something new comes out and replaces finasteride like CB in 2021
Its still just a tiny percent of men that get it