I am guessing (although I can't prove it yet) that the issue of
arachidonic acid also has alot to do with blood type.
Those pre-disposed to the consumption of animal protien
would most likely be the ones more capable of
handling arachidonic acid. Drs. Eades's says that
"some people" (most likely non-O's) are sensitive to AA,
which he doesn't illustrate, but could very well be blood type.
He also states you can mitigate potential negative effects
by ingesting fish oil (EPA).