Particles smaller than 200 nm are small enough to enter the brain directly through the olfactory nerve after breathing air pollution through the nose. Photo: BloombergLondon: Scientists have for the first time discovered tiny magnetic particles from air pollution lodged in human brains—which could be a possible cause of Alzheimer’s disease. Other sources of magnetite nanoparticles include open fires and poorly sealed stoves within homes. Particles smaller than 200 nm are small enough to enter the brain directly through the olfactory nerve after breathing air pollution through the nose. “Our results indicate that magnetite nanoparticles in the atmosphere can enter the human brain, where they might pose a risk to human health, including conditions such as Alzheimer’s disease,” said Maher.

Source: Mint September 06, 2016 11:48 UTC