Here’s a good article on pork

http://www.kevala.co.uk/student/modules.php?name=News&file;=article&sid;=12

Another article pointed out that pigs excretery system isn’t that great so many of the toxins are stored in the fat so certified organic is the way to go definitely. For me personally I decided that it was easier to stay away from it all together.  Hope you find a supplier.