When eating lifestyles are radically different in a household:

You should at the very least, try for the following:
1. Mutual respect: don't say disparaging things to each other about what the other person is eating. Meal time should be comfortable for everyone.
2. Acknowledgment in the fact your both adults: meaning you don't have to feel you have to "save them" from their eating habits and you don't need "saving" from yours (if they don't agree with LC). As adults, you are both individually responsible for what goes in your mouth. It is insulting to have a spouse "going parental" on you, and is more likely to serve to add more friction than to "win" someone over to your way of thinking. My hubby and I have agreed to disagree on some points.

This is part of a post was originally in "Hubby not keen on LC".