I am not very much familiar in gambling casinos but there should be an attending physician to check if any one of those people gambling in their vicinity will show bad symptoms of excessive gambling, that guy has little support coming from his family, they should have seen the first sign if the guy is gambling excessively.
As far as casinos concerned they won't see that or look on that matters since gamblers choose to stay and play, it will not be checked unless this issue will happen along the way, it's the gamblers responsibility to control their emotions in order not to let this things happen physical health should be in place even you are dealing with this activities.