What are nanoparticles?
A particle of matter that is between 1 and 100 nanometers (nm) in diameter.
We avoid nanoparticles enter the body by inhalation, injection into the bloodstream, and passage through the skin. They also have the potential to penetrate the blood–brain barrier due to their small size. Materials which by themselves are not very harmful could be toxic if they are inhaled in the form of nanoparticles. The effects of inhaled nanoparticles in the body may include lung inflammation and heart problems.