> provided they are the right nutrients in the right quantities

But isn’t that the tricky part: how do you figure out what is “right”? If you eat synthesized sugar and vitamin C in place of an orange, is it really the same thing? Perhaps the fiber or some other minerals in the orange affect how your body processes and digests the nutrients.

Nutrition is pretty complex and until we know what “right” is, I’d think it’s generally a safer bet to stick with foods that we’ve been eating for hundreds or thousands of years, rather than recently devised nutritive cocktails.