I use the news feed, http://www.promedmail.org/, which is the alert system for the International Society for Infectious Disease. Today they posted this alert: Texas Tech scientist raises concern of using beta-agonists http://feedstuffs.com/story-texas-tech-scientist-raises-concern-using-beta-agonists-45-109864 The gist is here is yet another pharmaceutical used in beef to enhance growth. I knew about antibiotics, growth hormone, and the risks of BSE, but I had no idea how many other drugs were being fed food animals. The article immediately made me ask, how much residual of this drug is left in the beef. Then I find this report to the OIE: Problems associated with drug residues in beef from feeds and therapy http://www.oie.int/doc/ged/D9384.PDF It's bad enough these practices result in trace pharmaceuticals in our drinking water, but US regulation of food safety, given the lobbying influence of the billion dollar ranching industries, doesn't exactly imbue trust in the FDA's certifying of the use of these drugs and/or the USDA's keeping our meat safe. I had already switched to organic grass fed hamburger, antibiotic free eggs, and I don't drink milk (the natural hormones in the milk are an issue). Not sure if I want to give up cheese, but this latest report is just too much. I am going all organic and I wish I'd have switched earlier.