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Posted Wed Apr 2 2014: from Discovery:
Silver Nanoparticles May Harm Humans and Wildlife
Microscopic bits of silver, known as nanoparticles, now appear as an anti-microbial ingredient in a wide variety of consumer products. However, a growing body of evidence tarnishes silver nanoparticles' reputation. Studies published this year documented unhealthy reactions in human intestinal cells and aquatic algae after exposure to silver nanoparticles, reported Inside Science.... Silver nanoparticles' tiny size allows them to enter parts of living things bodies that other molecules can't reach. The other study mentioned by Inside Science and published in February by ACS Nano, found that human intestinal cells reacted negatively to silver nanoparticles of different sizes.... The danger is that nanosilver may be entering the environment now, yet we don't know how it will affect living things in the long term. Scientists do know that various forms of silver, including nanoparticles, can be toxic to animals, including rainbow trout and rats, in laboratory experiments.
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