What have occupational studies shown regarding silver and human health?
Several studies of workers who had chronic airborne exposures to various silver compounds have shown that the only potential long-term effect is argyria, a cosmetic effect. While chronic exposure may result in detectable levels of silver in the hair, blood, and feces of workers, adverse effects have not been detected or reported. It is important to note that, to our knowledge, argyria has never been reported in humans from ambient or everyday environmental exposures.