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Nanoparticles may pose serious health risks

Posted on Saturday, April 21 2007 @ 09:31:32 CEST by

Scientists warn that magnetic nanoparticles may be hazardous to your health, EE Times reports:
Experiments revealed that iron oxide particles less than 10 nanometers in diameter stunt the growth of nerve cells. Separate in vitro experiments at the National Institute of Standards and Technology (NIST) have also concluded that nanotubes shorter than 200 nanometers interfere with human lung cells.

Both groups called for animal testing that would not only quantify the toxic effects of nanomaterials on living organisms but also characterize the most toxic types of nanomaterials. Currently the National Science Foundation (NSF) spends almost 10 times more on developing nanomaterials than on engineering to prevent their toxic effects.

"NSF is spending a lot more money on developing nanomaterials than [on] measuring their toxicity or characterizing what makes certain kinds of nanomaterials toxic," said Shunho Jin, a professor of materials science at UCSD. "We want to see increases in funding for studies like ours, which try to determine what types of nanomaterials are most toxic and how that toxicity can be avoided."



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