It's been shown to be linked, but not causal yet. Formal studies on THC and gynecomastia have not been performed in humans.

Stating things as facts that haven't been proven so, is also not helpful for establishing scientific basis.

I started smoking regularly and powerlifting at the same time, toncalm down my CNS.

My testosterone went up a lot, and my BP went down a lot.

The general physical health changes did a lot, but I think it might show that weed can't drop free Test enough for it to matter.