Michael Audette: The 'altered genes' was probably a goof on my part. Let me try rephrasing it. I personally believe that evolution through natural selection does occur (although I don't believe that the H. Sapien species evolved from the Neanderthals or hominids). Maybe this kid's parents, grandparents, and on down the line for a few generations have been eating a grain and dairy based diet. If so, their genes may have changed somewhat to where they actually respond *better* to a grain and/or dairy based diet as opposed to a paleo diet. Not everyone should eat paleo. In my judgment, anyone who believes that all the paleo tenets are right merely b/c the paleo 'authorities' claim it to be so, is not only ignorant but also arrogant. In any field, the experts disagree. Some of the 'experts' on this list can't even agree on exactly what constitutes a paleo (on non-paleo) diet. Also in any field, the 'gurus' tend to take whatever protocol works best for them, and say that is the way everyone should do it. For me, paleo is healthy, but it doesn't necessarily logically follow that therefore it's also healthy for everyone else. I tried getting one of my friends to eat paleo for a week. Normally, he eats loads of grains and dairy (his parents do too). He felt absolutely horrible on the paleo diet. This tells me that his genes are actually better suited to a grain and dairy based diet. Or do u think that he should continue to eat paleo even though his body is telling him not to? Waiting for your reply, Justin Hasselman Jefferson City, MO