Merck, as any corporation, is made of people.
Scientists at Merck must have seen that Finasteride was causing persistent effects in a subset of patients, already since their first trials in the 90s, and it’s very likely they carried out some research to understand why this was happening.
What if we try to find out who where those scientists from the experiments in the 90s and try to get anonymous feedback from them? There are whistleblowers in every industry: banking, weapons, pharma…