When you eat a burger and fries from a fast food restaurant, you're ultimately eating corn.
Researchers collected hamburgers, chicken sandwiches and French fries from fast-food chains around the country, and performed chemical analyses to find out the ultimate source of the animal meat and cooking oil that go into those meals.
The findings showed that the cows and chickens that make up fast food sandwiches are fed almost exclusively corn, and that French fries are almost universally cooked in corn oil.