Reposted from Dr. Mercola ¦ January 06 2011
Unless you are dependent on a tube for nutrition, the reason you have survived to this point in your life is because your body is able to extract what it needs from the food you eat by properly digesting it.
So the short definition of digestion — you put food or liquid into your mouth, swallow it, and then your body breaks these molecules down into a size it can absorb. What your body doesn’t use is excreted as waste.
Fairly basic, right?