http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. As people age, their cells become less efficient at getting rid of damaged protein - resulting in a buildup of toxic material that is especially pronounced in Alzheimer's, Parkinson's disease, and other neurodegenerative disorders. http://www.physorg.com/news137592884.html Medicine & Health Sun, 10 Aug 2008 13:14:44 EST news137592884