Since many have varying long-term effects, it seems to me that there has to be an epigenetic component - i.e. change of gene expression. Or just that some of the drug is left bound to certain tissues/ cells in the body (e.g. hormonal, neurostransmitters).
This is happening on a general level with chemicals in the environment and there are plenty of studies showing these effects, and even demonstrating effects of these on hormones etc.
So perhaps for those that have long term effects, attempts to remove or reduce the burden of these chemicals will be helpful/ or an ultimate solution. I’m putting this out there - in case others have thought through this/ seen any papers tackling it from this aspect.
Sauna protocols combined with detoxification supports, and perhaps caloric restriction (to encourage breakdown of existing cells) could be potential ways to accelerate ‘clear out’ of remnants of finasteride in the body. And ultimately return function to / or closer to its baseline.