Nanosilver disinfects — but at what price?

Nanosilver disinfects — but at what price?

By Janet Raloff, 08:51 AM November 26, 2008

A broad array of consumer and medical products employ billionths-of-a-meter scale silver particles as embedded disinfectants. A study now suggests that if those nanoparticles get loose and into the body, they might wreak havoc with the human immune system. Documented effects occurred at very low concentrations — levels as minute as parts per trillion or even, sometimes, one-thousandth that much (i.e. parts per quadrillion).

Perturbing immunity could, of course, be very bad.

I ran into the...

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