Greensboro, NC -- You've eaten it and don't even know it. But if someone asked if you're eaten Genetically Modified food you'd probably say you never have.
"I don't think Americans understand scientist have been manipulating crop varieties for 50 or 60 years for to get better varieties that help farmers grow better food for us," says Gregory Jaffe of the Center For Science In The Public Interest.
We're talking everything from fruits to boxed foods, like the cereal you had for breakfast, to the salad dressing you use. It's estimated 80%percent of our processed foods are genetically modified. In fact, they're called Genetically Modified Organisms or GMO's.
This is how it works: seeds have something inserted into their DNA to change them. Our attached demonstration may put it into better perspective, but basically scientists take the DNA from one item and replace the DNA with one from another.
The most common crops that are modified are corn, soybeans, canola and sugar beets. They were created for sustainability.
The modified plants are more resistent to insects so you don't need to spray them with insecticide or the plants tolerate herbicides so when you spray them with weed killer, the plants live, the weeds die.
So is GMO food safe? That's the big debate.
On the pro side, Gregory Jaffe. "For the current crops grown in the US the current engineered crops in the US, the food made from those crops is safe to eat."
On the con side, opponents say GMO's can potentially put allergens and toxins in the foods and a new study released last week shows pigs fed GM soy and corn had more stomach inflammation.
Roland McReynolds from the Carolina Farm Stewarship Association says you need to think of the environmental impact as well, "something like 14 million acres in the United States are infested with weeds that are resistent to herbicides because of the use of genetically modified seeds."