Thanks Mom2a,
I've started writing down everything Andy eats daily. I haven't been able to pinpoint anything in his diet yet but I have noticed a significant decrease in his tics since baseball ended last week. I always noticed his tics were worse on days that he had practice or played in a game but it seems that since the season ended his tics are a lot less frequent. He still has them but they are no where near as constant as they were a week ago. I'm not sure if it's a coincidence or not but I'm going to keep watching. I have also started him on vitamin supplements. Thanks for your response I will definitely be watching for the trigger foods you listed.
Thanks,
Kathy