In much of the developed world—and increasingly in the developing world as well—we’re practically bathing in DNA-damaging chemicals. In some places—cities with lots of people and lots of cars, especially—the simple act of breathing is enough to do extra damage to your DNA. But it would also be wise to be wary of the PCBs and other chemicals found in plastics, including many plastic bottles and take-out containers.59 (Avoid microwaving these; it releases even more PCBs.)
