Mahdavi SM, Sahraei H, Yaghmaei P, Tavakoli H. · 2014
Researchers exposed male rats to extremely low frequency electromagnetic fields at 1 Hz and 5 Hz to study effects on stress hormones and behavior. They found that these exposures altered stress hormone levels (increasing ACTH while decreasing noradrenaline) and changed glucose metabolism differently depending on the frequency used. The study demonstrates that even very low frequency EMF exposures can disrupt the body's stress response system in measurable ways.
Tök L, Nazıroğlu M, Doğan S, Kahya MC, Tök O. · 2014
Turkish researchers exposed rats to Wi-Fi radiation (2.45 GHz) for one hour daily over 30 days and found it caused oxidative stress in the eye lens, similar to cellular damage from aging or toxins. When rats were given melatonin supplements, the antioxidant significantly reduced this Wi-Fi-induced damage. This suggests that common Wi-Fi exposure may harm delicate eye tissues, but natural protective compounds could help defend against such effects.
de Groot MW, Kock MD, Westerink RH. · 2014
Researchers investigated acute (30 min) and sub-chronic (48 h) exposure to 50 Hz ELF-EMF on naïve and chemically stressed PC12 cells. Acute exposure up to 1000 μT did not affect basal or depolarization-evoked calcium levels in naïve cells. Sub-chronic exposure up to 1000 μT had no consistent effects on calcium homeostasis, ROS production, or membrane integrity in naïve cells. In chemically stressed cells, both acute and sub-chronic exposure also failed to exert consistent effects on calcium homeostasis, ROS production, and membrane integrity. The authors concluded that exposure up to 1000 μT does not induce neurotoxic effects in vitro in either cell type.
Li Y, Zhang C, Song T. · 2014
Researchers exposed Sprague-Dawley rats to Morris water maze training, ELF-MF exposure (50 Hz, 100 microT), or combined training and exposure for 90 days, with normal rats as controls. Previous training improved spatial acquisition in the Morris water maze and this effect lasted at least 90 days. However, this improvement was not observed during the probe trial. ELF-MF exposure did not significantly differ from controls and did not interfere with training-related improvements.
Sorahan T, Mohammed N · 2014
The mortality experienced by a cohort of 73,051 employees of the former Central Electricity Generating Board of England and Wales was investigated for the period 1973–2010. Poisson regression was used to calculate relative risks (rate ratios) of developing any of the three diseases under investigation for categories of lifetime, distant (lagged) and recent (lugged) exposure. No statistically significant trends were shown for risks of any of these diseases to increase with estimates of lifetime, recent or distant exposure to magnetic fields. There is no convincing evidence that UK electricity generation and transmission workers have suffered elevated risks from neurodegenerative diseases as a consequence of exposure to magnetic fields.
de Groot MW, Kock MD, Westerink RH. · 2014
Researchers exposed nerve cells (PC12 cells) to 50 Hz magnetic fields at levels up to 1,000 microtesla for periods ranging from 30 minutes to 48 hours. They tested both healthy cells and chemically-stressed cells that were more vulnerable to damage. The magnetic field exposure caused no detectable effects on calcium levels, cellular damage, or oxidative stress in either type of cell.
Jin YB et al. · 2014
Researchers assessed DNA damage using comet assays in mouse and human cell lines exposed to 60-Hz, 1 mT ELF-MF for 4 or 16 hours. Cells exposed to ELF-MF alone showed no significant DNA damage compared to unexposed cells. No synergistic or additive DNA damage occurred when ELF-MF was combined with ionizing radiation, hydrogen peroxide, or c-Myc activation.
de Groot MW, Kock MD, Westerink RH. · 2014
Researchers exposed nerve cells (PC12 cells) to 50 Hz magnetic fields at extremely high levels - up to 1000 microteslas, which is 10,000 times stronger than typical background exposure. They tested both healthy cells and chemically-stressed cells that were more vulnerable to damage. The study found no toxic effects on the nerve cells' calcium balance, oxidative stress levels, or cell membrane integrity, even at these extraordinarily high exposure levels.
Rougier C, Prorot A, Chazal P, Leveque P, Leprat P · 2014
Researchers investigated the effects of 2.45 GHz microwave exposure on Escherichia coli cell membranes while maintaining the suspension at an average temperature of 37°C. No effect was detected with conventional heating or 200 W exposure, but membrane integrity was slightly altered at powers from 400 to 2000 W. Thermal characterization indicated the temperature reached was not high enough to explain the membrane changes, suggesting a power-dependent electromagnetic threshold effect. Exposures were discontinuous to keep the average temperature at 37°C, and effects were measured using flow cytometry with propidium iodide staining and intracellular protein release.
Salunke BP, Umathe SN, Chavan JG · 2014
Researchers exposed mice to 2.45 GHz electromagnetic radiation (the same frequency used by Bluetooth devices) for up to 120 days to see if it would cause anxiety, obsessive-compulsive behaviors, or depression. The study found no behavioral changes in the mice at any time point, suggesting this level of EMF exposure did not affect their mental state or behavior patterns.
The animals were exposed to an access point (AP) from WIFI device (D-Link DWL-3200 AP with 802.11 g mode and WPA2 network protection) as previously described in Salah et al. et al. · 2013
Ozorak A et al. · 2013
Kidney and testis samples were collected from decapitated rats during the fourth, fifth, and sixth weeks. In the fourth week, lipid peroxidation in kidney and testis and copper, zinc, GSH, GSH-Px, and TAS in kidney decreased, while iron in kidney and vitamin A and vitamin E in testis increased in exposed groups. In the fifth week, iron, vitamin A, and β-carotene in kidney increased, while GSH and TAS decreased in exposed groups. In the sixth week, iron concentrations in kidney and lipid peroxidation in kidney and testis increased, while copper, TAS, and GSH concentrations decreased in exposed groups.
Shahin S et al. · 2013
Twelve-week-old female mice were exposed to 2.45 GHz microwave radiation for 2 hours per day for 45 days to study effects on implantation and pregnancy. Implantation sites were significantly affected in the microwave-irradiated mice compared to controls. The researchers concluded that low-level microwave irradiation-induced oxidative stress suppresses implantation and may also lead to deformity of the embryo if pregnancy continues.
Shahin S et al. · 2013
Researchers exposed female mice to 2.45 GHz microwave radiation (the same frequency used by WiFi and microwave ovens) for 2 hours daily over 45 days, using power levels far below current safety standards. The exposed mice showed significantly reduced pregnancy success, increased DNA damage in brain cells, and widespread oxidative stress throughout their bodies. This suggests that even low-level microwave radiation may interfere with reproductive health through cellular damage mechanisms.
Maestú C et al. · 2013
Spanish researchers tested whether very low-intensity 8 Hz magnetic fields could help women with fibromyalgia, a chronic pain condition. After eight weekly sessions, patients receiving real magnetic stimulation showed significant improvements in pain thresholds, daily functioning, chronic pain levels, and sleep quality compared to those receiving fake treatment. The benefits appeared quickly for pain relief but took six weeks to develop for other symptoms, suggesting magnetic fields may offer a safe treatment option for fibromyalgia patients.
Lustenberger C et al. · 2013
Swiss researchers exposed 16 men to pulsed radiofrequency radiation (similar to cell phone signals) throughout entire nights of sleep and measured their brain activity and learning ability. They found that RF exposure altered brain wave patterns during sleep and reduced the participants' ability to improve on a motor skill task by 20% compared to nights without exposure. This suggests that RF radiation can interfere with the brain's natural sleep processes that are essential for learning and memory consolidation.
Kim HJ, Jung J, Park JH, Kim JH, Ko KN, Kim CW. · 2013
Bai WF, Xu WC, Feng Y, Huang H, Li XP, Deng CY, Zhang MS. · 2013
Researchers exposed rat bone marrow stem cells to 50 Hz electromagnetic fields (the same frequency as household electricity) for one hour daily over 12 days. The EMF exposure significantly enhanced the stem cells' ability to transform into functional brain neurons, complete with working synapses and electrical activity. This suggests that power frequency magnetic fields can directly influence cellular development and may have therapeutic applications for treating nervous system diseases.
Poulletier de Gannes F et al. · 2013
Researchers exposed male and female Wistar rats to a 2450 MHz Wi-Fi signal for 1 hour per day, 6 days per week. Exposure lasted 3 weeks for males and 2 weeks for females before mating, then continued for 3 more weeks during gestation. No deleterious effects on reproductive organs or fertility were observed, and no macroscopic abnormalities were found in fetuses even at 4 W/kg.
Aït-Aïssa S et al. · 2013
This study examined whether WiFi signal exposure (2450 MHz) during pregnancy and early life affected stress markers in rat brains by measuring 3-Nitrotyrosine and heat-shock proteins (Hsp25 and Hsp70) using immunohistochemistry. The researchers found no significant differences in these biomarkers between rats exposed to WiFi at various power levels (0-4 W/kg) and sham-exposed controls, suggesting repeated WiFi exposure during gestation and early postnatal development did not cause detectable adverse effects in young rat brains.
Aït-Aïssa S et al. · 2013
This study investigated whether prenatal and early-life exposure to WiFi signals (2450 MHz) affected stress markers in developing rat brains by measuring 3-Nitrotyrosine and heat-shock proteins (Hsp25 and Hsp70) in hippocampal and cortical tissues. The researchers found no significant differences in these biomarkers between WiFi-exposed and sham-exposed young rats across multiple dose levels, concluding that repeated WiFi exposure during gestation and early life did not produce detectable deleterious effects on developing rat brains.
Aït-Aïssa S et al. · 2013
This study examined whether prenatal and early-life exposure to WiFi signals (2450 MHz) affected stress biomarkers in developing rat brains. Researchers measured 3-nitrotyrosine and heat-shock proteins (Hsp25 and Hsp70) in brain tissue of young rats exposed to various WiFi signal intensities, finding no significant differences between exposed and sham-exposed groups.
Poulletier de Gannes F et al. · 2013
French researchers exposed pregnant rats and their developing offspring to Wi-Fi signals at 2.45 GHz for several weeks, including during mating and pregnancy. They found no harmful effects on fertility, pregnancy outcomes, or fetal development, even at exposure levels of 4 watts per kilogram. This suggests Wi-Fi exposure may not significantly impact reproductive health in this animal model.
Estenberg J, Augustsson T. · 2013
Researchers developed a car-based measuring system to estimate outdoor radiofrequency field exposure across rural, urban, and city areas of Sweden. The median power density was 16 µW/m(2) in rural areas, 270 µW/m(2) in urban areas, and 2400 µW/m(2) in city areas. In urban and city areas, base stations for mobile phones were clearly the dominating sources of exposure.
Rauš S et al. · 2013
Researchers studied whether exposure to an extremely low-frequency magnetic field (ELF-MF, 50 Hz) affects postischemic damage in the hippocampus of Mongolian gerbils. After 10-min bilateral carotid occlusion, gerbils were continuously exposed to ELF-MF at an average magnetic induction of 0.5 mT for 7 days, with outcomes assessed on the seventh and 14th days after reperfusion. Ischemic gerbils exposed to ELF-MF had significantly lower cell loss and greater astrocyte and microglial responses compared with ischemic gerbils without exposure on the seventh day after reperfusion. By the 14th day after reperfusion, differences in the measured parameters were low and insignificant.
