Why Are Canned Vegetables So Much Less Nutritious Than Fresh Vegetables?

(Image credit: Apartment Therapy)

Q: Vegetables like beets and peppers are super-nutricious, so why do the canned versions have such depressing nutrition labels? A jar of commercial beets in my pantry has 0% vitamin A, 0% vitamin C, 0% calcium, 0% iron! How can this be? Does canning kill the nutrients?

Sent by Peter

Editor: Any nutrition-saavy folks in our listening audience? Can you help explain this phenomenon?