Sort of like your discussion re allergies.... I think kids naturally know what's good or bad for them.

We did a food elimination with my kids when younger to check what was causing certain behaviours.

Eg I have one kid who never liked chocolate or fruit like bananas and slow cooked meat. All high in amines.

The other child had issues with salicylates...eg summer fruits / berries / watermelon.

The problem is the older generations think if it's "healthy" it's "healthy"

We are all made different