Genetically modified foods are any types of foods whose genes have been modified by scientists. Most often, crops such as corn, wheat and beans are genetically modified to resist pests and disease.
Genetically modified foods may also be modified to resist drought and to increase the crop's yield. The United States produces the highest amount of genetically modified crops in the world, and it has been estimated that approximately 60 to 70 percent of the foods that Americans eat contain at least one genetically modified ingredient. The United States government claims that genetically modified foods are safe. However, many other countries, including the entire European Union, have banned genetically modified foods due to safety concerns.