My opinion is that it does make some sort of change in ur hormonal profile, which may lead to male pattern baldness reversal in some cases, but also may lead to acceleration in other cases.
I also believe this to be the case with finasteride, dutasteride, green tea, saw palmetto, etc.
They have the potential to alter hormones, but this could lead to either reversal or acceleration, depending on the original levels of hormones.
which means b4 u do any of these things u should get ur hormones checked, then work out wat the drug/herb/supplement changes, then figure out if it will help u, or accelerate male pattern baldness.
I also happen to think for some people weed helps them mentally, but for some it makes them paranoid, anxious, and this also leads to more hairloss. Not too mention in rare cases schizophrenia.
I am an advocate for weed, because i believe in freedom of choice, and i am against the current drugs policies that put ppl in jail, but i also think if its allowed the strong hydroponics should be banned, to stop the strong reactions some ppl have.
just my opinions though. nothing i said is proven or fact.