Do you mean the problem of separation from society? This problem concerns not only gambling - many online gamers or some other games become fanatics of this activity and forget about everything else. I heard in China there were cases when players died right in the gaming clubs due to the fact that they forgot to eat/sleep.
I'm an online gamer and I felt this. Separation from society.
Whenever I go out, I'm comfortable if I'm alone compare to the times where I got some friends if I'm outside. You said that there are cases in China who died because they forgot to eat/sleep. That only means that they are in a gaming addiction and many are experiencing the same thing as they've experienced. Lucky for me, I can control myself whenever and I can manage my time. I know how many hours will I play, go outside, eat and sleep but there are times that I take lesser sleep hours than the usual but I only do it once a week (mostly on Fridays) because of my current work too.