From my point of view, trading is not unhealthy it all about depends on the person. If you are not disciplined and have no routine of working then it is quite stressful for you Trading is unhealthy when people do this all day long without taking any short break. So in trading business person should be punctual and disciplined.
I believe it really depends on a person. for some people as me it's can me really damaging
Yes, we know that there are millions of people, who suffer from depression and other serious diseases of their nervous system. If these people have some losses in trading, they feel really awful. The crypto is not for these men.