This felicitous hypothesis says that grains are the environmental
factor specific to agrarian societies that is responsible for diseases
of affluence.
http://www.pubmedcentral.gov/articlerender.fcgi?tool=pubmed&pubmedid=16336696

The easiest way to disprove this hypothesis is to point out the
obvious.

If grains were indeed the causative factor then accordingly as grains
in agrarian societies have been in their diet for some 10,000 years
than these very same agrarian societies should have been suffering from
diseases of affluence for the past 10,000 years.  This clearly was not
the case.  Furthermore, these same diseases of affluence should
logically be in a period of decline as man gradually has biologically
adapted to grains.  Or in other words, the worst case of the diseases
of affluence would have logically existed some 10,000 years ago when
man first started eating grains rather than today.

Further, this very same academic paper contradicts this conclusion by
saying that "CHD was reportedly rare in developed populations until the
early 1900s."

So, what happen in the 1900s?  I can tell you.  Food science developed
and accordingly a sudden surge in the widespread consumption of
refined-grain junk food took place.  So, if grains are to be blamed for
this post 1900 phenomenon then we are clearly talking about refined
grains rather than whole-grains.  Of course, there are other
possibilities too, such as global warming and modern stress.

Furthermore, this paper presents only an untested and unproven
hypothesis.  I have easily this hypothesis to be wrong.

As previously stated, the tomato has been in the European diet for less
than 200 years.  Yet, it is clearly one of the healthiest foods in the
human diet.  So, the notion that 10,000 years is not long enough for
humans  to adapt to grains is total nonsense.

Who says so?  I do.
http://naturalhealthperspective.com/food/whole-grains.html
--
John Gohde,
    Achieving good Nutrition is an Art, NOT a Science!

The nutrition of eating a healthy diet is a biological factor of the
mind-body connection. Now, weighing in at 18 web pages, the
Nutrition of a Healthy Diet is with more documentation and
sharper terminology than ever before.
http://naturalhealthperspective.com/food/