I am lactose intolerant also, but honestly, I think it more than just the milk sugars that get my tummy all upset.
For instance, today... I have eaten 2 eggs, fake cheese, ketchup, wasa crisps and coffee and after two hours at the gym, my stomach feels like I might die. I know it is gas and will come out eventually. (well, I hope). But, I am beginning to think that anything with sugar is bad for my belly. Is this a known disease? Sugar intolerance?