This exposure assessment measured outdoor micro-environment RF-EMF levels in daily-life settings across urban and suburban locations in Japan using a portable device (50 MHz–6 GHz) with GPS. Reported exposure levels were higher in urban areas, with railway stations showing the highest levels among the environments measured. The authors emphasize the need for further comprehensive studies and frame prolonged RF-EMF exposure as an ongoing public health concern.

This animal study exposed Aedes aegypti larvae to 5G-NR RF-EMF at 3.6 GHz for 5 days under two feeding regimes. The study reports delayed development at a lower exposure level mainly in nutritionally weakened larvae, and at a higher exposure level reports developmental changes and reduced adult size attributed to dielectric heating. Mortality and wing length asymmetry were reported as unchanged, and the authors note such high exposure levels are unlikely in natural aquatic settings.

This conference paper uses numerical simulations to evaluate near-field exposure and thermal effects in a detailed human head model from a realistic 5G mobile phone operating at 26 GHz. The preliminary modeling suggests moderate, localized temperature increases in superficial tissues. The authors emphasize the need for higher-resolution models, refined tissue segmentation, longer exposure durations, and varied phone placements to better characterize potential impacts.

This animal experiment exposed adult male rats to 6 GHz RF-EMR (0.065 W/kg) for 4 hours/day over 42 days and compared them with sham controls. The exposed group showed higher comet assay genotoxicity metrics, though not statistically significant, and more prominent liver histopathological changes (e.g., portal inflammation and congestion). The authors conclude that 6 GHz exposure can cause histopathological and DNA-level changes in rat liver tissue under the studied conditions.

This randomized, double-blind, sham-controlled study tested whether CACNA1C rs7304986 genotype modifies sleep EEG responses to 5G RF-EMF exposure. The authors report a genotype-by-exposure interaction, with 3.6 GHz exposure in T/C carriers associated with a faster NREM sleep spindle center frequency versus sham. The abstract also notes longer sleep latency in T/C compared with T/T carriers, and concludes that genetically susceptible groups may show differential physiological responses to 5G RF-EMF.

This review discusses the rapid deployment of 5G and the associated debate about potential human health impacts from EMF exposure, particularly at 3.5–26 GHz including millimeter waves. It emphasizes limited published studies in these exposure ranges and highlights EU-funded initiatives and research consortia aimed at closing knowledge gaps. The authors state that guidelines are generally considered adequate at present, but argue that uncertainties—especially regarding long-term exposure—support continued research and precautionary approaches.