Mad cow disease came from humans suggests new theory
UK - Mad cow disease may have originated from human remains mixed into cattle feed, according to a controversial new theory. A leading British expert on BSE believes there is strong evidence for linking the brain disease - which gave rise to variant CJD in humans - to a grisly trade in carcass material that was prevalent in the 1960s and '70s. Over those decades Britain imported hundreds of thousands of tons of ground-up animal parts for use as fertiliser and the manufacture of feed.Source: Mongabay.com