This animal study examined whether paternal exposure to 4.9 GHz (5G) radiofrequency radiation affects male offspring in C57BL/6 mice. It reports increased anxiety-like behavior and reduced sperm quality in adult F1 males from exposed fathers, alongside reported LRGUK hypermethylation and reduced LRGUK expression in testes. The abstract reports no significant effects on depression-like behavior, learning/memory, or fertility across F1–F2 generations.