Packages of bacon are displayed on a a shelf for sale at a grocery store in Centreville, Maryland on October 26, 2015. Sausages, ham and other processed meats cause bowel cancer, and red meat "probably" does too, a UN agency warned Monday, in a potentially heavy blow for the fast-growing livestock industry. A review of 800 studies from around the world found "sufficient evidence in humans that the consumption of processed meat causes colorectal cancer," said the International Agency for Research on Cancer (IARC). The finding, it added, supports "recommendations to limit intake of meat" -- particularly in processed forms.  AFP PHOTO / JIM WATSON        (Photo credit should read JIM WATSON/AFP via Getty Images)