I read an article once about Iodine in the diet of pigs - maybe it got posted before the Big C-Zone Crash...
as I recall, it said that farmers monitor the amount of Iodine that the pigs get, because too much will make the fat in the bacon too soft! So they want only a certain ratio so that the bacon fat will be firm, but in Japan they like it softer, or something like that. Sorry for the paraphrase, I just remember thinking about how this supports the fat liquification, which I am all for!