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10 postsFilters: tag: rf-exposure Clear
No Measurable Impact of Acute 26 GHz 5G Exposure on Salivary Stress Markers in Healthy Adults
This triple-blind randomized study tested whether 26.5 minutes of 26 GHz (5G) RF exposure at environmental-like levels alters salivary stress biomarkers in healthy adults. Salivary cortisol and alpha-amylase measured before, during, and after exposure did not differ between real and sham conditions. An exploratory subgroup with frequent sampling also showed biomarker stability over time. The study addresses acute exposure only and notes the need for research on repeated or long-term exposures and vulnerable groups.
Brain Tumor and Mobile Phone Risk Among Young People: Analysis of Japanese People Using the MOBI-Kids International Case-Control Study
This Japanese case-control study within the MOBI-Kids framework examined mobile phone use and brain tumor risk among people aged 10–29 years in the Kanto region. Using logistic regression adjusted for age and sex, it reports no increased brain tumor risk associated with mobile phone use, including analyses considering weighted output power and technical characteristics. The authors highlight possible recall bias and limited power in sub-analyses and recommend ongoing research as wireless technologies change.
Microwave and RF Exposure-Induced Molecular and Genetic Alterations
This review discusses recent studies on microwave and RF exposure and their reported impacts on molecular and cytogenetic materials. It states there is growing evidence that RF exposure can induce DNA damage at levels considered safe by current standards, and cites newly reported genetic alterations in rat cancers after lifetime low-level RF exposure. The article concludes that these findings challenge existing exposure guidelines and support reconsideration of regulatory limits.
Numerical analysis of the thermal effects on adult with brain pacemaker implantation exposed to WIFI antennas
This numerical study modeled RF exposure from WiFi/5G-type antennas near a 3D brain model with implanted brain pacemakers relevant to Parkinson’s disease. SAR and temperature increases were reported to remain below ICNIRP 2020 limits across modeled conditions, with maxima at a 90° antenna-to-brain angle. Despite compliance with SAR/temperature limits, the authors report modeled thermal strain and tissue displacement that could affect postoperative efficacy, leading them to recommend caution and increased distance from phones.
Simultaneous 4G and 5G EMF Exposure and Field Uniformity in a Reverberation Chamber for Animal Studies
This engineering study describes the design and validation of a reverberation chamber intended for large-scale animal carcinogenicity research with RF EMF relevant to 4G/5G. E-field uniformity was tested under four loading scenarios, including setups with 80 Sprague-Dawley rats. The chamber achieved better than 1.36 dB E-field uniformity across scenarios, and the authors report a method to predict composite E-field intensity for simultaneous multi-frequency exposures.
Assessing exposure from different vehicular antennas in military applications: a computational study
This computational study modeled electromagnetic exposure for military personnel near vehicular communication antennas across HF, VHF, and UHF scenarios. All simulated configurations reportedly met ICNIRP Basic Restrictions, though some exceeded ICNIRP Reference Levels in certain positioning and frequency combinations. The authors conclude that safety is generally maintained across the modeled conditions and that results can inform operational guidance and safety regulations.
Effect of the radiation emitted from a cell phone on T lymphocytes in mice
This mouse study examined whether cell phone radiation affects T lymphocytes over 2–8 weeks of exposure. CD4 and CD8 subset percentages were similar across groups, but after more than six weeks, exposed groups showed increased T-cell apoptosis and reduced transformation rates compared with shams. The study also reports decreased IL-10 and increased IL-12 in exposed groups, suggesting time-dependent immunological changes under the tested conditions.
Experimental Study of Animal Behavior under the Influence of the Electromagnetic Field of the 5G Mobile Communication Standard
This pilot animal study exposed mature male Wistar rats to 4.9 GHz electromagnetic fields described as 5G-standard, for 15 days (2 hours/day) in a semi-anechoic shielded chamber. Open-field testing found no clear behavioral differences between unmodulated and modulated exposures. Statistically significant behavioral changes occurred in both exposed and control animals, which the authors attribute to changes in the environmental electromagnetic background, making causal interpretation uncertain.
Effect of Repeated Exposure to Complexly Organized Electromagnetic Radiation on the Rat Behavior in the "Open Field" Test
This animal study examined repeated pulsed-modulated RF exposure (1–4 GHz; total pulse power density 300 μW/cm2) in male and female Wistar rats and assessed behavior using the open field test. The abstract reports stress reactions and long-term memory impairment in some rats, with females described as more sensitive than males. Reported effects were transient, with behavior returning to baseline within 1.5–2 months after exposure stopped. The authors suggest potential concern for constant exposure scenarios, though this is not directly evaluated in humans here.
Mobile phone use and cancer
This narrative review discusses potential public health consequences of widespread mobile phone use and the controversy around long-term cancer risks. It states that evidence from epidemiological and experimental studies suggests long-term exposure to mobile phone emissions may be linked to a small to moderate increased risk of certain cancers, while also emphasizing that data are insufficient for a final risk assessment. The author argues that even small risks could matter at the population level and that exposure-reduction measures may be indicated given uncertainties.