[johny115]

no one suspects porn? or social media, phone use, youtube, etc.?

I know that these are bit difficult to get significant hard evidence for, but at least anecdotally, isn't this kind of obvious to every man?

Being social in a real world, going to gym, pursuing goals ... you can feel the differences mounting up on yourself pretty clearly. On the other hand, watching porn, and browsing datings apps or social media ... depression, anxiety and low confidence sets in slowly.

Don't believe its chemical toxicity. The shared variable across the whole planet is internet, porn, social media and increased phone use.

There was none of this available in the past, so you had to entertain yourself in different ways. Now there is a lure of just staying at home and comforting yourself with the modern technology. None of which supports testosterone production as behaviors as opposed just going outside and doing something.