Congratulations! Great job, I know it's a hard habit to kick.
I think the higher cancer rates in the US have to do with our lifestyle over here. Poor eating habits, (I know I don't eat enough veggies and fruits, and am in the process of trying to lose the last 50 lbs -- I've lost 22 lbs so far), and I also think we aren't active enough -- it seems like everywhere I go, I drive; everything is just too far to walk to. Lol, just thought I'd share my opinion.