Kwon MK, Choi JY, Kim SK, Yoo TK, Kim DW. · 2012
In this double-blind study, two volunteer groups of 17 EHS and 20 non-EHS subjects were simultaneously investigated for physiological changes (heart rate, heart rate variability, and respiration rate), eight subjective symptoms, and perception of RF-EMFs during real and sham exposure sessions. Experiments were conducted using a dummy phone containing a WCDMA module (average power, 24 dBm at 1950 MHz; specific absorption rate, 1.57 W/kg) within a headset placed on the head for 32 min. WCDMA RF-EMFs generated no physiological changes or subjective symptoms in either group, and there was no evidence that EHS subjects perceived RF-EMFs better than non-EHS subjects.
Wallace D et al. · 2012
Researchers tested whether TETRA radio signals (used by emergency services) affect brain function and physical responses in 183 people, including 51 who reported being sensitive to electromagnetic fields. Participants were exposed to 420 MHz signals at levels similar to living near a cell tower while performing memory and attention tests. The study found no differences in cognitive performance or physical responses between real exposure and fake exposure in either group.
Ceyhan AM et al. · 2012
Thirty-two male Wistar albino rats were divided into control, sham, electromagnetic radiation, and radiation plus β-glucan groups. Rats in the radiation groups were exposed to a 2.45-GHz field for 60 minutes daily over four weeks, and β-glucan was given at 50 mg/kg/day by gavage before each exposure. Radiation increased malondialdehyde and catalase activity and decreased superoxide dismutase and glutathione peroxidase activities, while β-glucan significantly reversed the malondialdehyde rise and the superoxide dismutase drop, with non-significant effects on catalase and glutathione peroxidase.
Ceyhan AM et al. · 2012
Researchers exposed rats to WiFi-frequency radiation (2.45 GHz) for one hour daily over four weeks and measured damage to skin tissue. The radiation significantly increased oxidative stress markers and decreased protective antioxidant enzymes in the skin. However, when rats were given beta-glucan (a natural compound found in oats and mushrooms) before each exposure, it largely prevented this cellular damage.
Unknown authors · 2012
Researchers studied the effect of an 8 mT, 50 Hz electromagnetic field on memory consolidation in adult male and female mice. Mice were randomly assigned to six groups of ten each, with experimental groups exposed to the field for 4 hours after learning, sham-exposed groups, and control groups. Memory consolidation was assessed Twenty-four hours later using step-down latency in a passive avoidance task, and exposure significantly decreased memory function in both sexes.
Bouji M, Lecomte A, Hode Y, de Seze R, Villégier AS. · 2012
French researchers exposed young and middle-aged rats to cell phone radiation (900 MHz) for 15 minutes to study brain effects. They found that older rats showed increased brain inflammation and enhanced emotional memory, while younger rats had elevated stress hormones. The study reveals that age significantly affects how the brain responds to radiofrequency radiation.
Solomentsev GY, English NJ, Mooney DA · 2012
Researchers performed non-equilibrium molecular dynamics simulations of a solvated 21-residue polyalanine peptide at 300 K and 1 bar with external electromagnetic fields at 2.45 GHz and electric field intensities of 0.01–0.05 V/Å. The peptide naturally tends to form stable secondary structure elements stabilized by tertiary interactions. External fields disrupted this behavior through localized dipolar alignment that enhanced hydrogen bond perturbations, causing more frequent transitions between shorter-lived conformational states. The study reported 16 independent 40-nanosecond trajectories starting from both extended and fully folded states.
Breckenkamp J et al. · 2012
Researchers measured RF-EMF exposure in the bedrooms of 1,348 households in Germany using Antennessa(®) EME Spy 120 dosimeters, with 280 measures available for each frequency band per household. Exposure levels were very low and far below the ICNIRP's exposure reference levels. Cordless phones (DECT standard) and wireless LAN/Bluetooth were the major sources, contributing about 82% of total exposure.
Sekeroğlu V, Akar A, Sekeroğlu ZA · 2012
Researchers investigated the cytogenotoxic effects of 1800 MHz electromagnetic fields on bone marrow cells of immature and mature rats over 45 days with a 15-day recovery period. Significant differences were observed in chromosome aberrations, micronucleus frequency, mitotic index, and polychromatic erythrocyte ratio in all treatment groups. A 15-day recovery period did not improve the cytogenotoxic damage in immature rats.
Sekeroğlu V, Akar A, Sekeroğlu ZA · 2012
Turkish researchers exposed young and adult rats to 1800 MHz cell phone radiation (GSM frequency) for 2 hours daily over 45 days, then examined bone marrow cells for genetic damage. They found significant chromosome damage, DNA breaks, and cellular disruption in both age groups, with young rats showing more severe and irreversible effects even after a 15-day recovery period.
Aït-Aïssa S et al. · 2012
Pregnant rats were exposed to a 2.45 GHz Wi-Fi signal for 2 hours per day, 5 days per week, at whole-body SAR levels of 0, 0.08, 0.4, and 4 W/kg. Dams were exposed from days 6 to 21 of gestation, and then three newborns per litter were further exposed from birth to day 35 postnatal. Sera from pups were screened for antibodies against 15 different antigens using ELISA, and no change in humoral response was observed regardless of the types of biomarker and SAR levels. The researchers' observations suggested a lack of adverse effects of Wi-Fi exposure on delivery and general condition of the animals.
Dogan M et al. · 2012
Rats were randomly assigned to an exposed group (n=9) and a control group (n=9), with the exposed group subjected to electromagnetic radiation for 20 days. Researchers measured choline, creatinin, and N-acetylaspartate levels by magnetic resonance spectroscopy, catalase and glutathione peroxidase activities by spectrophotometry, and apoptosis by histopathology. No significant differences were found in NAA/Cr, Cho/Cr, or NAA/Cho ratios between the exposed and control groups. Oxidative stress parameters and apoptotic cell counts also showed no significant differences between groups.
Chen G, Lu D, Chiang H, Leszczynski D, Xu Z. · 2012
Researchers used the yeast Saccharomyces cerevisiae to study how exposure to extremely low frequency magnetic fields and radiofrequency EMF affects gene expression. Yeast cells were exposed for 6 hours to either 0.4 mT 50 Hz ELF-MF or 1800 MHz RF-EMF at a specific absorption rate of 4.7 W/kg. The study found no confirmed gene expression changes from ELF-MF exposure, and only the expressions of SMC3 and AQY2 were confirmed as responsive to RF-EMF.
Chen G, Lu D, Chiang H, Leszczynski D, Xu Z · 2012
Researchers exposed yeast cells to both 50 Hz magnetic fields and 1800 MHz radiofrequency radiation to see if electromagnetic fields could change gene activity. They found that magnetic fields caused no confirmed gene changes, while radiofrequency exposure affected only 2-5 genes out of thousands tested. This suggests that EMF effects on basic cellular processes may be more limited than some studies indicate.
Legros A et al. · 2012
Researchers investigated the effects of a 60 Hz, 1,800 μT magnetic field on neurophysiological and neuromotor measures in humans, including EEG, standing balance, voluntary motor function, and physiological tremor. Results suggested a reduction of human standing balance and an increase of physiological tremor amplitude in the frequency range associated with central nervous system contribution, while no exposure effect appeared on EEG or voluntary motor control. The researchers concluded that 1 h of 60 Hz, 1,800 μT magnetic field exposure may modulate human involuntary motor control without being detected in cortical electrical activity.
Legros A et al. · 2012
Researchers exposed people to strong 60 Hz magnetic fields (like power lines emit) for one hour. The exposure impaired balance and increased hand tremor, even though brain waves stayed normal. This shows power-frequency fields can affect movement control in subtle ways.
Khalil AM, Gagaa MH, Alshamali AM. · 2012
Researchers exposed rats to cell phone radiation at 1800 MHz for 2 hours and measured a specific marker of DNA damage (8-oxodG) in their urine. They found significant increases in DNA damage markers throughout most of the exposure period, with peak damage occurring 1 hour after exposure began. This suggests that cell phone radiation can cause oxidative damage to DNA, which is a key mechanism linked to cancer development.
Terro F et al. · 2012
Researchers exposed cultured cerebral cortical cells to GSM-900MHz at 0.25W/kg for 24 h using a wire-patch cell. Exposure caused a ~0.5°C temperature rise but did not induce apoptosis. HSC70 increased by 26% and HSP90 decreased slightly (<10%). α-synuclein decreased by 24% without changes in active lysosome localization, indicating independence from CMA. Similar effects were seen when cells were incubated at 37.5°C, suggesting the changes were due to temperature rise.
Laudisi F et al. · 2012
Researchers exposed pregnant mice to WiFi signals at 2450 MHz with a specific absorption rate of 4 W/kg for two hours daily during gestation. Thymocyte count, phenotype, and proliferation were unchanged in exposed offspring. These null effects were consistent in both sexes at 5 and 26 weeks of age.
Hong MN et al. · 2012
Researchers exposed human MCF10A mammary epithelial cells to single frequencies of 837 MHz or 1950 MHz, or both frequencies together, at a SAR of 4 W/kg for 2 hours while maintaining isothermal temperature. They measured intracellular ROS, SOD enzyme activity, and GSH/GSSG ratio and found no statistically significant alterations from either single or multiple RF radiation exposures. Ionizing radiation used as a positive control showed evident changes in all measured endpoints. The results indicate that single or multiple RF radiation exposure did not elicit oxidative stress in MCF10A cells under these conditions.
Li CY, Liao MH, Lin CW, Tsai WS, Huang CC, Tang TK. · 2012
The study aimed to investigate the inhibitory effects of microwave radiation on LPS-induced NFκB expression in THP-1 monocytes. PMA caused THP-1 monocytes to differentiate into macrophages that reacted with LPS, increasing NFκB levels. Microwave radiation exposure decreased NFκB expression levels in PMA and LPS stimulated THP-1 monocytes.
Unknown authors · 2012
Indian researchers studied 50 electrical workers exposed to low-frequency electromagnetic fields from transformers and distribution stations, comparing them to 20 unexposed controls. They found significantly more chromosomal damage and genetic abnormalities in the electrical workers' blood cells, with damage increasing based on years of exposure. This suggests chronic occupational EMF exposure may increase genetic damage and cancer risk.
Huwiler SG et al · 2012
No changes in bacterial growth or culturable counts were observed for any of the magnetic field types. Gene expression analysis of 4,358 genes and 714 intergenic regions showed no statistically significant changes after exposures of 2.5 hours or 15 hours.
Unknown authors · 2012
Scientists exposed E. coli bacteria to 50 Hz magnetic fields (the same frequency as European power lines) at 1 mT strength for up to 15 hours. They found no changes in bacterial growth, survival, or gene expression across 4,358 genes tested. This suggests power line frequency magnetic fields don't affect basic cellular processes in this bacterial model.
Janać B, Selaković V, Rauš S, Radenović L, Zrnić M, Prolić Z · 2012
Researchers exposed gerbils to 50 Hz magnetic fields (the same frequency as power lines) for 7 days after inducing stroke-like brain damage. The magnetic field exposure significantly reduced the hyperactive behavior that normally occurs after brain injury, suggesting these fields may have protective effects on brain function.
