The inhalation or ingestion (with polluted food) of those nanoparticles, mainly metallic, are preferential ways of entrance of that nanopollution into the body and its dissemination in all the organs, including the brain and the gonads (see the chapter War and Nanopollution in the book Nanopathology, the health impact of nanoparticles by A.M. Gatti and S. Montanari -www.worldscibooks.com/nanos