Yet another industry assurance about the safety of the controversial practices used in intensive livestock production has been exposed as a falsehood. Hot on the heels of recent public health and environmental scares associated with industrial livestock farming—including the rise of antibiotic-resistant bacteria, ractopamine residues in pork, and arsenic residues in poultry meat—new scientific research on an anabolic steroid which is routinely used in industrial beef production in the U.S. is causing alarm.