The study, which is published today (Thursday) in Human Reproduction, has found that these men, who were aged between 18 to 22, had almost half the sperm concentration and a two-fold lower total sperm count [1] and total count of motile sperm (sperm that could swim well) than did naturally conceived men of a similar age. (sciencedaily.com)
Moreover, the total number of motile sperm was lower in Missouri compared to the urban areas — almost 50 % lower than in Los Angeles participants. (sciencemag.org)
As an added bonus, many motile invertebrates will become more active when blue lights are on. (petbusiness.com)