Underground air destroys human DNA

By inhalation of microscopic particles of coal, asphalt, iron and other polluting elements, die each year more than 5000 Sweden. These particles may be the result of incomplete combustion, and wear of the road surface, the researchers reported in Sweden. The problem is that scientists uncertain source of the particles, which are a threat to human health. In recent studies have found that doctors compare the particles by car exhaust and fuel wood, which are recognized by the combustion formed harmful to the DNA ones who stand outside of the U. By comparing the effect of different microparticles on cultured lung cells, it was found that the air tube an amount iron particles, which are formed due to the friction of the wheels on the rails, has. After contact with the particles in the human formation of free radicals that are unhealthy for inheritance and increase the risk of cancer.