Colloidal silver is sold as a cold medicine, decongestant, all-around germ fighter, and a kind of cure-all. There seems to be no legitimate reason for taking it as a dietary supplement. Colloidal ...

Causes: Argyria is caused by the ingestion of — or exposure to — silver or silver-containing compounds. The silver accumulates in the body and thus turns the skin and nails bluish-gray.

Argyria is caused by a buildup of silver in the body, which discolors the skin. Symptoms: The main symptoms of argyria are the skin developing a bluish-gray or gray tint, the fingernails growing ...