McDougall, in pointing to the health of the Japanese, also fails to point
out that in addition to eating more -fat- when they emigrate to America,
also start eating a hell of a lot more sugar, corn syrup, and trans-fatty
acids from things like margarine.  There is a very real possibility that it
may be these things, not the protein and natural fats in the diet, that
cause their deteriorated health.  This factor is far too often ignored in
efforts to paint dietary fat in general as the root of all evil.

McDougall also fails to mention that Japanese immigrants get considerably
taller when they start eating the American diet--that is, their children
are taller than they are, and their grandchildren taller still, to the
point where most people of pure Japanese extraction who've been here for
two generations or more are nearly as tall as your average caucasian, or
only a bit shorter.  Their relatives who stay in Japan remain
-considerably- shorter than Americans.  This would suggest that there's
something about the Japanese diet which stunts children's growth, but that
doesn't get talked about much among low-fat diet advocates either.