Swapping 'built with adapted' doesn't avoid the naturalistic fallacy. Just because we have adapted to cope with something doesn't imply it is good for our current circumstances. Any source of calories would have desirable for our early ancestors - now we have the opposite problem. Instead gazing backwards to our primitive forbears for advice, we need to use science to guide us as to what the best foods to eat are.

In line with my point above that nature is irrelevant in a discussion about what's good or right, I'd like to point out that because of such unnatural practices as cooking our food, it kind of doesn't matter what our teeth are adapted to eat. I don't want to eat whatever foods our savanna ancestor ate, because now we have farms and kitchens and supermarkets, and I have better options, and better criteria to guide my choice than some interpretation of what's 'natural'.

Agreed. It seems like many people add a "perfectly" to adapted, and that gets them into trouble.