Haven't had that checked.  But this is all new to me.  The only previous problem I would have with dairy is if I ate Ice cream say after 8pm or so.  I'd go to bed and have to wake up and get to the bathroom.  I always made sure I are it around 7 if I didn't want to have any problems.  I'm supposed to have some more things looked into after I recover from the gall bladder surgery.