Deterioration of Old Age

The deterioration of old age can be delayed through supplementing diets with antioxidants and by feeding high-quality, easy-to-digest protein.

Antioxidants are vitamins such as C and E and minerals such as zinc and selenium. Technically, they mop up atoms called "free radicals" that damage cells in the body.

With aging, mopping up free radicals becomes even more important. The "senior canine diets" from the largest dog food makers include high levels of these nutrients.