Browse 6,486 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 2,561 studies from BioInitiative Report
Sage C, Johansson O, Sage SA · 2007
Researchers measured electromagnetic fields from early smartphone-like devices during normal use. They found these devices produced surprisingly high electromagnetic pulses - up to 90 microTesla when powering on and 60 microTesla during email activities - potentially exposing users throughout day and night.
Li BF, Guo GZ, Ren DQ, Zhang RB. · 2007
Researchers exposed rats to electromagnetic pulses (intense bursts of electromagnetic energy) and measured their blood pressure for four weeks afterward. The study found that these pulses caused immediate spikes in blood pressure, followed by drops below normal levels that lasted up to a month. This suggests that even brief electromagnetic exposures can trigger lasting changes in cardiovascular function.
Dimbylow P. · 2007
Researchers created detailed computer models of pregnant women at different stages of pregnancy (8 to 38 weeks) to measure how radiofrequency radiation is absorbed by both the mother and developing baby. They found that current safety guidelines appear to provide adequate protection for the fetus, with radiation absorption levels staying within established limits across all pregnancy stages tested.
Crouzier D et al. · 2007
French researchers monitored rats exposed to cell phone radiation for 24 hours, tracking brain chemistry, brain waves, and sleep patterns. They found no meaningful effects from the radiation exposure, with only one minor sleep change that researchers couldn't link to the radiation.
Bachmann M et al. · 2007
Researchers exposed 14 healthy volunteers to low-level microwave radiation (450 MHz) and measured their brain activity using EEG. They found that the brain initially responded to the radiation by increasing electrical activity, but then adapted by reducing activity below normal levels. This adaptation occurred specifically in alpha and beta brain waves, which are associated with alertness and cognitive function.
Baohong W et al. · 2007
Chinese researchers exposed human immune cells to 1.8 GHz microwave radiation and UV light. Microwaves alone caused no DNA damage, but when combined with UV, they disrupted normal DNA repair - initially reducing damage then increasing it hours later, suggesting unpredictable interference with cellular repair mechanisms.
Todorović D, Kalauzi A, Prolić Z, Jović M, Mutavdzić D. · 2007
Researchers exposed endangered longhorn beetles to weak magnetic fields (2 milliTesla) for five minutes and monitored their brain nerve activity. The magnetic field caused permanent changes to nerve cell activity in 7 out of 8 beetles tested, with some neurons becoming more active and others less active. This demonstrates that even brief exposure to relatively weak magnetic fields can cause lasting changes to nervous system function in living organisms.
Shen JF, Chao YL, Du L. · 2007
Researchers exposed rat nerve cells from the trigeminal ganglion (which controls facial sensation) to static magnetic fields at 125 millitesla and measured how this affected potassium channels that help control nerve cell activity. They found that the magnetic field altered how these channels turned off (inactivated), potentially disrupting normal nerve function. This suggests that moderate-strength magnetic fields can physically deform cell membranes and change how critical ion channels operate.
Del Giudice E et al. · 2007
Italian researchers exposed human brain cells to 50 Hz electromagnetic fields from power lines and found significantly increased production of beta-amyloid proteins, the toxic clumps linked to Alzheimer's disease. This laboratory finding suggests a potential biological mechanism connecting household electricity exposure to Alzheimer's risk.
Zeni et al. · 2007
Researchers exposed mouse cells to 900 MHz cell phone radiation for up to 30 minutes to test whether it creates harmful molecules called reactive oxygen species. The radiation did not increase these damaging molecules at any exposure level tested, suggesting no immediate cellular harm.
Tkalec M, Malarić K, Pevalek-Kozlina B. · 2007
Researchers exposed duckweed plants to cell phone-like radiofrequency radiation at 400 and 900 MHz frequencies. The exposure caused oxidative stress, where harmful molecules damage plant cells by overwhelming natural defenses. Higher frequency radiation generally produced more severe cellular damage than lower frequencies.
Balci M, Devrim E, Durak I · 2007
Researchers assigned forty female albino Wistar rats to one of four groups to study the effects of mobile phone radiation on oxidant/antioxidant balance in corneal and lens tissues. One group received mobile phone radiation for 4 weeks, a second group received radiation plus a daily oral dose of vitamin C (250 mg/kg), a third group received vitamin C alone, and a fourth group served as a control. In corneal tissue, MDA level and CAT activity significantly increased and SOD activity was significantly decreased in the mobile phone group compared with the control group. In lens tissue, only the MDA level significantly increased in the mobile phone group relative to the control group, while SOD, GSH-Px, and CAT did not differ significantly between groups.
Sirmatel O, Sert C, Tümer C, Oztürk A, Bilgin M, Ziylan Z · 2007
Researchers measured nitric oxide production in 33 healthy young male volunteers aged 18 to 26 years old immediately after a 30-minute exposure to a 1.5 T magnetic field. A control group of 30 healthy male volunteers aged 19 to 26 years old was not exposed to the magnetic field, and their nitric oxide levels were also measured. Total nitrite concentration in post-exposure samples was found to be higher than in pre-exposure samples (P < .05).
Sirmatel O, Sert C, Sirmatel F, Selek S, Yokus B · 2007
Researchers investigated the effects of a 1.5 T static magnetic field, produced by an MRI apparatus, on oxidative stress markers in 33 male volunteers. Total antioxidant capacity showed a significant increase after exposure compared to before exposure (p < 0.05). Oxidative stress index and total oxidant status showed a significant decrease after exposure compared to before exposure (p < 0.01 for each). The researchers concluded that the 1.5 T static magnetic field produced a positive effect of decreasing oxidative stress in men following short-term exposure.
Sahebjamei H, Abdolmaleki P, Ghanati F · 2007
Researchers investigated the effects of static magnetic fields on antioxidant enzyme activities in suspension-cultured tobacco cells. Cells were exposed to static magnetic fields at 10 and 30 mT for 5 days, 5 hours each day, and compared with control cells. Superoxide dismutase activity increased with exposure, while catalase and ascorbate peroxidase activity decreased, and lipid peroxidation levels also increased.
Cheun BS, Yi SH, Baik KY, Lim JK, Yoo JS, Shin HW, Soh KS · 2007
Researchers studied biophoton emission from Madin-Darby canine kidney (MDCK) cells treated with hydrogen peroxide, with and without exposure to a 60 Hz AC magnetic field. Hydrogen peroxide increased biophoton emission from the cells, and the increase was dependent on the amount of hydrogen peroxide applied. When the 60 Hz AC magnetic field was applied, the decay of chemiluminescence intensity took a different path compared to cells not exposed to the field.
Akdag MZ, Bilgin MH, Dasdag S, Tumer C · 2007
Stevens P · 2007
Researchers studied whether exposure to a 0–5 µT magnetic field at EEG alpha-band frequencies (8–12 Hz) would affect emotional state. Participants reported a change in emotional state following exposure, and a decrease in global field power was observed. The frontal alpha-asymmetry that would physiologically indicate a directly induced emotional state was absent, and researchers suggested that participant experiences were due to an interpretation of the effects of MF exposure.
Shin EJ et al. · 2007
Researchers examined the role of dopaminergic receptors in behavioral changes induced by extremely low frequency magnetic fields (ELF-MF). Exposure to ELF-MF at 2.4 mT for 1 hour per day, for one or seven days, enhanced locomotor activity in a time-dependent manner. The results suggest that ELF-MF-induced behavioral responses are, at least in part, mediated by activation of dopamine D1-like receptors.
Manikonda PK et al. · 2007
Researchers exposed rats to 50 Hz magnetic fields at 50 and 100 μT intensities for 90 days and then examined hippocampal tissue. Compared to controls, ELF exposure was associated with increased intracellular calcium levels and changes in the activity of several calcium-related enzymes. Binding to NMDA receptors was also found to be decreased in exposed rats. The researchers suggested that perturbed neuronal functions caused by ELF exposure may involve altered calcium signaling contributing to aberrant NMDA receptor activities.
Jadidi M et al. · 2007
Researchers used a water maze to evaluate how magnetic field exposure affects consolidation and retrieval of spatial memory in rats. Exposure to a 50 Hz, 8 mT magnetic field for 20 minutes immediately after training impaired retention performance, but exposure at 2 mT did not. Exposure given shortly before retention testing had no effect on performance.
Ishay JS et al. · 2007
Researchers kept Oriental hornet workers in an Artificial Breeding Box and exposed them to an AC magnetic field of a magnitude of B = 50-70 mGauss, comparing the combs they built with those from a control group exposed only to the natural terrestrial magnetic field. Exposed hornets built combs with a 35-55% smaller number of cells and fewer eggs, many deformed and imperfectly hexagonal cells, and more delicate and slender comb stems.
Del Giudice E et al. · 2007
Researchers tested whether low-frequency electromagnetic field exposure could affect amyloidogenic processes in cultured cells. They exposed H4 neuroglioma cells that stably overexpress human mutant amyloid precursor protein to a 3.1 mT 50 Hz field. Overnight exposure significantly increased secretion of amyloid-beta peptide, including the isoform Aβ 1–42, without affecting cell survival.
Che Y, Sun H, Cui Y, Zhou D, Ma Y. · 2007
Researchers examined the effects of a 50 Hz magnetic field at 1 mT intensity on learning and memory in Lohmann brown domestic chicks using a detour learning task. Chicks exposed for 20 hours per day showed a significant impairment in detour learning, while those exposed for 50 minutes per day showed no effect.
Carrubba S, Frilot C, Chesson AL, Marino AA. · 2007