http://www.cfah.org/hbns/archives/viewSupportDoc.cfm?supportingDocID=936 http://www.cfah.org/hbns/archives/viewSupportDoc.cfm?support... http://edrv.endojourna

http://www.cfah.org/hbns/archives/viewSupportDoc.cfm?supportingDocID=936 http://www.cfah.org/hbns/archives/viewSupportDoc.cfm?support... http://edrv.endojournals.org/cgi/content/full/24/5/668 http://edrv.endojournals.org/cgi/content/full/24/5/668 Could be chemicals, could be nutrition or genetics, doesn't look like they pinned it down. But in the context of this discussion, culture shouldn't be the only culprit.