Silver nanoparticles are increasingly being used in everything from self-sanitizing toothbrushes to clothes. It may eventually be used in toothpaste.
The ability of tiny particles of silver to kill bacteria has been known for some time, though the research appears to be light on whether the silver also carries health risks.
CBC/Radio-Canada reports that the Washington, D.C.–based Wilson Center counts around 400 products presently using silver nanoparticles.
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