Even worse, the FDA says its own research shows that the arsenic added to the chicken feed ends up in the chicken meat where it is consumed by humans. So for the last sixty years, American consumers who eat conventional chicken have been swallowing arsenic, a known cancer-causing chemical.
Pfizer, the manufacturer of the chicken feed product known as Roxarsone has decided to pull the product off the shelves. Pfizeris the the very same company that makes vaccines.
Another disturbing fact you probably didn't know about hamburgers and conventional beef: Chicken litter (yes, chicken crap) containing arsenic is fed to cows in factory beef operations. So the arsenic that's pooped out by the chickens gets consumed and concentrated in the tissues of cows, which is then ground into hamburger to be consumed by the masses.