University of Miami Study: Wi-Fi Radiation Harms Semen Quality – Environmental Health Trust


Researchers at the Desai Sethi Urology Institute of the University of Miami in Florida found cellphones using Wi-Fi connectivity for data usage have harmful effects on semen quality in men. In the study semen samples were obtained from fertile normozoospermic men aged 25–35 years. They found that sperm motility and viability are negatively impacted by smartphones that use the WiFi spectrum for data transmission.

Environmental Health Trust recommends men keep cell phones away from their body.

“Cell phones emit radio frequency radiation. We recommend using corded phones and hardwired connections like ethernet to connect laptops and computers to the internet, instead of Wi-Fi,’ stated Theodora Scarato, Executive Director of Environmental Health Trust. 


Chu KY, Khodamoradi K, Blachman-Braun R, Dullea A, Bidhan J, Campbell K, Zizzo J, Israeli J, Kim M, Petrella F, Ibrahim E, Ramasamy R. Effect of Radiofrequency Electromagnetic Radiation Emitted by Modern Cellphones on Sperm Motility and Viability: An In Vitro Study. Eur Urol Focus. 2022 Nov 12:S2405-4569(22)00247-4. doi: 10.1016/j.euf.2022.11.004. Epub ahead of print. PMID: 36379868.

A 2020 study found men who reported using their phone more in the evenings had a reduced concentration of sperm, and their sperm were more lacking in “motility” – the ability to swim correctly. “Radiofrequency electromagnetic radiation emitted from mobile phones is one factor associated with these changes, the scientists said,” in the article Men who use smartphone at night are damaging their fertility.” 

Consistent evidence from experimental research, epidemiological studies and in vitro (cells) laboratory, and in vivo (animal) studies shows that the radio frequency radiation exposure from wireless devices is associated with men’s reproductive health issues including:

  • Reduced sperm count
  • Reduced sperm motility and concentration
  • Damaged  sperm DNA
  • Altered sperm cell structure
  • Increased erectile dysfunction
  • decreased testosterone