Actually, gambling disorder causes high suicide rates, i think individuals with GD are at a higher risk five times more probable to commit suicide than the normal people. Yes, high alcoholic drinking also causes high suicide risk, but often gambling addiction is condemned and people are afraid to show it. With a lot of addicts not telling their losses and how stressed they are and hiding it and acting normal it makes it so hard to see to find and help them. Anyways while this two addictions are very harmful, i will say gambling is special, because it can not be detected easily and the high probability that someone has to hold all the burden by himself.