It’s nice to read topic that discussed health issue incorporated with gambling. Not mental but physical since this is really happening and I experienced it myself before I don’t manage much my physical health due to busyness at work and enjoyment on gambling.
This is actually what have been taught during my high school days when someone's fingers just got hard to move. And they told us that we got to keep exercising while we incase just have to sit working hours in front of a keyboard. Maybe this syndrome is just not very common today. That was just that time, because today even the kids that stay online the whole night playing online games are not experiencing the condition.
OP lists health risks that aren't really particularly for gamblers but to all people of any profession but type warriors online. But one that I have myself is hunger. I kept sitting on my computer for hours I skipped meals all the time.