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When Danish pig farmer Ib Pedersen first noticed the sudden uptick in disease, deformities and death among his farrow, his immediate reaction was to investigate the diet of his pigs to look for possible causes. And what he found confirms what a growing body of evidence also suggests: that genetically modified organisms (GMOs) in conventional animal feed are increasingly responsible for triggering birth defects, deformities, spontaneous abortions and other growth and development abnormalities in both pigs and cattle.

With 13,000 pigs on his farm, Pedersen knows the ins and outs of how to properly raise swine, as well as what is considered normal in terms of pig health. This is why he grew particularly alarmed when many more of them than usual began to come down with strange illnesses. Besides noticeably lower birthrates, Pedersen observed more of his pigs than normal being born with strange defects like spinal deformities and limb problems, and many more pigs than usual were dying.

“When using GM feed I saw symptoms of bloat, stomach ulcers, high rates of diarrhea, pigs born with deformities,” explained Pedersen to
The Ecologist’s Andrew Wasley, who recently conducted an in-depth investigation into the link between GMOs and animal health problems. “But when I switched [to non-GM feed] these problems went away, some within a matter of days.”