We were told by the doc who gave the dx of lactose intolerance for chibi-kun that he could have a max of a pint of dairy products (or the equivalent thereof) per day, but of course, kids being kids, he ignores that and suffers as a result. (so do I but I theoretically know what I'm doing and why and what will happen and accept the consequences....theoretically) Hubby is stupid (imho) and chooses to ignore it completely and then whines when chibi-kun has an episode of screaming cuz his stomach hurts or he has constipation really badly as a result... *sighs*

For me, I can't have even that much before I end up in pain...

I think it's a matter of personal difference, so anyone making sweeping generalisations like that is just plain stupid and wrong...