First off, "SAD" stands for Standard American Diet as referred to by Mark Sisson (excellent post!) and it is sad, indeed. Our typical diets of cereal, frozen waffles, Pop-Tarts, and sandwiches is appalling and extremely destructive. Here is a simple reason why:

What is unique about the WGA (wheat germ agglutinin) glycoprotein is that it can do direct damage to the majority of tissues in the human body without requiring a specific set of genetic susceptibilities and/or immune-mediated articulations. This may explain why chronic inflammatory and degenerative conditions are endemic to wheat-consuming populations even when overt allergies or intolerances to wheat gluten appear exceedingly rare. The future fate of wheat consumption, and by implication our health, may depend largely on whether or not the toxic qualities of WGA come to light in the general population.

But stress exemplifies carbohydrates' ill effects even more. Check out the entire post, it goes into detail of how pharmaceuticals don't work, too.

Epinephrine (adrenaline), norepinephrine, cortisol, renin, aldosterone and other adrenal gland secretions are prompted acutely on a short-term basis. Under high insulin and chronic conditions, these powerful adrenal hormones and chemicals are inappropriately turned on long-term.

In other words, if you eat a diet high in carbohydrates (Food Guide Pyramid) you will have elevated stress hormones and insulin bombarding your cells, tearing them down, and creating more disease . Oh, and did I mention that cancer feeds on that high sugar diet, as well?

Be aware. When it comes to health, diet is everything.

Thanks Animal Pharm