My boyfriend is LI. He is 27 and we discovered this a several months (possibly a year) ago. He went to his dr and she basically said there is no test and to just avoid dairy.
It normally takes ~ 24 hours for the symptoms to start and then he will be on the toilet after approximately 48 hours.
If he accidentally puts (real) butter on his toast instead of margarine (lactose free) he will be on the toilet.
Almost all cake frosting (we have gone to a ton of weddings) will result in him being on the toilet.
But almost no wedding cake (if he doesn't eat the frosting) will result in him being on the toilet.
We bought vegan cheese and didn't realize there was casein in it. If he eats the cheese in high quantity (making pizza) he will not feel well even if it is lactose free.
Is this normal? How do we know what he can or can not eat?