Surprisingly, avoiding GMO foods may not be as viable as one might think:

> Currently, up to 92% of U.S. corn is genetically engineered (GE), as are 94% of soybeans and 94% of cotton (cottonseed oil is often used in food products). It has been estimated that upwards of 75% of processed foods on supermarket shelves – from soda to soup, crackers to condiments – contain genetically engineered ingredients. [1]

[1] https://www.centerforfoodsafety.org/issues/311/ge-foods/abou...