This Week In Wellness research published in the journal Fertility and Sterility has found that EMF radiation caused by the increased use of mobile phones may be associated with a reduced sperm concentration and total sperm count (TSC) in the semen.

https://www.news-medical.net/news/20231102/Study-links-heavy-mobile-phone-use-to-lower-sperm-count.aspx

https://www.fertstert.org/article/S0015-0282(23)01875-7/fulltext#articleInformation