Research from the National Research Centre for the Working Environment in Denmark has shown that inhalation of nanoparticles could potentially affect sperm quality.

The studies were carried out on mice in two different experimental setups. First, adult male mice were directly exposed to nanoparticles and subsequently observed to have a significantly decreased production of sperm as well as damage to testicular tissue. Second, pregnant female mice were exposed to nanoparticles and here, the male offspring were found to have decreased sperm count at puberty.

Collectively, these two studies show that sperm quality could be negatively affected both when exposure occurs in adulthood and at the embryotic state.

Involuntary childlessness hits 15 percent of all Danish couple . In about half the cases caused infertility male factors.

Read more about these studies in Miljø og Sundhed: http://miljoogsundhed.sst.dk/blad/ms1502.pdf

And at the National Research Centre for the work environment website: http://www.arbejdsmiljoforskning.dk/da/nyheder/arkiv/2015/nanopartikler-i-arbejdsmiljoe-paavirker-muligvis-maends-saedkvalitet