The FDA has a Poisonous Plant Database. It contains references to the scientific literature describing studies of the toxic properties and effects of plants and plant parts. If you do a search on soy: <http://vm.cfsan.fda.gov/~djw/pltx.cgi?QUERY=SOY>http://vm.cfsan.fda.gov/~djw/pltx.cgi?QUERY=<http://vm.cfsan.fda.gov/~djw/pltx.cgi?QUERY=SOY>SOY You will find a couple hundred records. Don.