Gained some weight, but not too much, as ppl(friends & female friends) tell me I'm rather "big and strong" than fat(broad shoulders FTW).
Also I tend to fall asleep while not gaming and sleep very very long (like 12h a day) when I get the opportunity.
Luckily no bent fingers or something similar, I have very fine motor skills because of gaming(all the time) and LEGO(when I was a child) though.
Ah yeah and my eyes need more time to adapt to sunlight, but I can see very good in dark places, well I can see very good at all, but my eyes just need more time to adjust to bright sunlight.
Also gaming made me really antisocial as I don't socialise with the "cool croud" at school. They all "play games", but they do not really GAME. They play like 2h a day, I play at least 6-12h a day.
An other drawback that I discovered lately, but I do not know if gaming did this to me is the fact that I'm way more effective when I'm in a slightly entranced state. when I'm half asleep I game better, and I can listen to three different sources of sonic and tell what every source said exactly.