Nanosafety - the view from the salon - Rob Aitken for SafeNano, UK
After listening to Vicki complaining about the colds she’d had this winter, her hairdresser advised her to take colloidal (nano) silver. use of this material seems to be growing rapidly in all sorts of applications from food supplements to wound dressings and even to odour free socks. And many of these applications will result in direct exposure of consumers to free silver nanoparticles. This despite the fact that that the US National Institutes of Health National Centre for Complementary and Alternative Medicine (NCCAM) have said; “Animal studies have shown that silver builds up in the tissues of the body. In humans, buildup of silver from colloidal silver can lead to a side effect called argyria. It causes a bluish-gray discoloration of the skin, other organs, deep tissues, nails, and gums. Other side effects from using colloidal silver products may include neurologic problems (such as seizures), kidney damage, stomach distress, headaches, fatigue, and skin irritation.”

First nanotechnology genotoxicity tests find that carbon nanotubes could damage DNA - NanoWerk, USA
Multi-walled carbon nanotubes can accumulate in mouse ES cells, and lead to the generation of free radicals called reactive oxygen species (ROS). Free radicals can chemically alter DNA bases and cause DNA damage within the cell.

Scenario series depicts nanotechnology revolution - NanoWerk, USA
The nonprofit Center for Responsible Nanotechnology (CRN) today released a series of scenarios depicting various versions of a near-future world into which transformative manufacturing concepts may emerge.

"It’s only a beginning. We hope this project will help to stimulate a thorough investigation of the benefits and risks of nanofactory technology to find what might be done now and in the next few years to mitigate the dangers and increase the likelihood of beneficial outcomes"