Check this list to see if your favorite foods contain this unnecessary ingredient.

Would you like some synthetic shoe leather in that sandwich? Youd probably gasp if your sandwich builder asked you that, but the truth is, azodicarbonamide, an industrial chemical foaming agent used to make synthetic leather as well as yoga mats and dozens of other consumer products, is found in nearly 500 foods, according to a new report from the nonprofit Environmental Working Group (EWG)

Read More: Yoga Mat Ingredient Found in Nearly 500 Foods