Generally people with gambling addiction may face depression, migraine, distress, intestinal disorders, and other anxiety-related problems. As with other addictions, the consequences of gambling can lead to feelings of despondency and helplessness. This is a disease which opens gate for other diseases.
But, this is only for those who are into problem gambling otherwise someone who is gambling for fun would never have any such issues since they know they are not into gambling for fun and making only loss that they could afford.
Problem is for those who are looking to earn from gambling and after they actually loose money they feel like they can get back their losses and start digging a hole for themselves which gets much more deep every time you try to fill it and once you are trapped into it then you start becoming drug addict to handle the financial pressure which puts the final nail in the coffin.