I love it when an author makes interesting unique lore and does it in a way that feels "real".
Not real like "in real life" but real as "something feels real".
I watched some time ago a video about DnD dwarves, and an interesting fact that sometimes you don't see properly portrayed is that dwarves are clean freaks, at least the DnD variant.
Because they do live in pretty insular communities, when they aren't adventurers, cleanliness easily equates to healthiness.