Minor change to make food useful:

[Nnystyxx]

I think I've got an idea on building off of the idea of "armor" for food types.

An amount of armor could also apply to the different damage types, each absorbing that extra bit first. This would be in addition to the stamina bonuses gained

Protein rich foods - Brute
Hot and spicy foods - Cold temperature damage
Cold foods - High temperature damage
Fruits and veggies - Toxin damage

Can't really think of anything that would work thematically for O2 damage though

eat ya grains
they got all those lil bubbles in em, clearly, full of oxygen