Main concern is that even if he is fine now, which he already isn’t due to gyno, he is 17 years old. how bad will things be in ten years or twenty years at this rate?
I highly doubt that anyone can maintain this crazy regimen for such a long period. Fighting hairloss is a long term fight so you need to find a good way to deal with it with sth you can tolerate 10,20 years. These kids panic now but will for sure regret their stupid behavior in the long run..