> We also eat very healthy in general as a family. Lots of pasta with clam sauce, red sauce, alfredo sauce. Lots of vegetables. Avocados. Clementines.

I'd urge you to change your frame of reference from "certain foods are healthy or not" to "certain foods are optimal for certain scenarios." Pasta in clam sauce is a pretty calorically dense food, and while there is nothing toxic about it, it's difficult to argue that many people need another calorically dense food, especially one that is low in protein.

This is not to say carbs and fat are bad, but that for the vast majority of Americans they need to reduce carbs and fat and increase protein to move towards a healthy diet.

Relevant the op, and your point about milk being high protein, milk could be a way for this to happen.