I have to make a confession

I don't care about your special diet.

I care about YOU, and I certainly don't want you to eat the thing that makes you sick/fat/hate life/whatever.

And if I were to cook for you, I'd certainly never serve you diet-offending items.

But I don't want to hear about it.

I don't want to hear about what happens if you eat the offending food.

I don't want to hear what your doctor thinks about it.

I don't want to hear the horror stories.

I don't want to hear your opinions on my own diet.

It's a diet. It's not a personality trait. Or, at least, it SHOULDN'T be a personality trait.