Until now i've only seen positive effects from poker, I think it's just about findind a point of balance, cause the negative effects of it comes when you become too afictionate or addicted to it, as a lot of things in life, so it becomes the center of thoughts at every moment, and when this happens, all you wanna talk about is poker and poker and poker, so you become the person who only talks about it and only thinks about it, which is not nice for the social part.
Obviously, thinking about poker constantly can bring some bad things to your life, but knowing how to control it can bring a lot of benefits, by the time that poker is the root of a lot of investiments and logic, and also, you can get better on the game proportionally as the much you think about the
hands you've played and stuff