JB is not denying that DHT causes hair loss, but rather offering other plausible causes.
Thanks JB, that's a good piece, with sound hypothesis, methodology, and conclusions. Especially, your introduction and extinction of independent variables/interventions (the 3 Tx meds) to see how they affected the dependent variables (AA and labs).
However, you must also consider, as cited by TestMon, that due to the myriad of individual genetic predispositions, one cannot legitimately extrapolate such conclusions to the general population as you've done here. Among other components, the scientific method requires that both of the inextricably linked mandates of validity and reliability be met. They are linked because, the former is bolstered by the latter, that is to say, the accuracy of a measure/measurement is supported by the consistency, i.e., repeatability of said measure. This is why independent study results are often juxtaposed and/or cited in a meta-analytical fashion to authenticate the findings of related successive results, none of which can exist in a case study (CS), i.e., a sample of one which you've provided here.
Ultimately, the only things we know for sure from your CS, is how your body worked THIS TIME, how it MIGHT continue to function in the future, and how others MIGHT function as well.
NOTE: Morton's distinction above.