In fact, GM food products are among the most tested products in history.
A meta-study of more than 1,700 peer-reviewed studies found no evidence that GMO crops produce adverse affects in humans or livestock. And a recent review of 29 years of livestock health and productivity statistics—looking at relevant data from both before and after the introduction of genetically engineered feed and covering more than one billion animals—concluded that GM feed is every bit as safe and nutritious as non-GM.