The explanation that this group offers is dependent on geography. By that I mean that it assumes that a geographically limited variable (i.e. use of this pesticide in that valley) explains everything. Unfortunately, this would produce clusters downwind of agriculture that would have JohnT's maps lit up like Christmas trees and that just is not the case. I suspect that this study is another of those "more study is needed until I get tenure" types.

As for the Amish, the inflammation hypothesis handles that easily. Theirs is a horse powered existence and they use a lot of hay. Dusty hay that goes deep into the lungs when inhaled and ups the inflammatory ante.

And there is also the fact that the Amish rely on kerosine lamps. The hydrocarbon soot is extremely small nanoparticles and, again, penetration is deep. -Rick