A research report presented to the European Parliament concluded that 5G technology networks at 450 to 6000 megahertz might cause cancer, infertility, and developmental defects in embryos, fetuses, and newborns.
The study found 950 papers on the carcinogenicity of RF-EMF in humans and 2,834 documents on reproductive and developmental studies.
https://www.europarl.europa.eu/RegData/etudes/STUD/2021/690012/EPRS_STU(2021)690012_EN.pdf