Edit...
In a nutshell then, would you agree that, humans are, ideally, local omnivores?
EDIT -
http://www.naturallygettingpregnant.com/fertility-blog/2008/09/27/vegetarian-...
you can find thousands of such posts... and valid studies to support them if you are willing to look.
Native Americans, as did other such tribal cultures, recognized that fertility and health went up as dietary animal fats increased.
Native Americans forced to eat small game such as rabbits with little to no fat also knew that this was not enough to do the *trick* and had words to describe the resulting infertile and unhealthy conditions.
Obviously, as I have tried to illustrate, there will be exceptions among vegetarians\vegans conscious of these things.
For the
Conspiracy people...
if brain function decreases without animal fats, or *perhaps* an acceptable consumption of similar fats if vegetarian... we have a further dumbing of the population...
Add decreased fertility issues in vegetarians... and we have a branch of the depopulation agenda...
grz-