In the past few decades, the animals raised for meat, dairy products, and eggs in the United States have been subjected to ever more deplorable conditions. Merely to keep the poor creatures alive under these circumstances, even more chemicals have had to be used, and, increasingly, hormones, pesticides, antibiotics, and countless other chemicals and drugs end up in foods derived from animals. The more unnaturally today’s livestock are raised, the more chemical residues end up in our food.