Browse 6,486 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing all 6,486 studies
Bielski J, Sikorski M · 1996
The study examined 50 workers exposed to electromagnetic radiation in the form of radiowaves. Average glucose levels were 155 mg% at 30 minutes, 180 mg% at 60 minutes, 153 mg% at 90 minutes, and 124 mg% at 120 minutes. Among those with glucose tolerance disturbances, 10 persons (32%) also had abnormal EEG records indicating disorders in brain bioelectric activity.
Barbaro V, Bartolini P, Donato A, Militello C · 1996
Researchers used a human trunk simulator and two TACS-standard analog cellular telephones to test pacemaker interference. The electromagnetic field from the telephones interfered with 10 of 25 pacemakers tested. Close proximity of the telephone antenna caused desensitizing, sensitizing, and pulse inhibition during incoming calls and ringing, with the worst case showing three skipped beats. Maximum sensing threshold variation reached about 186% increase and 62% decrease, and pulse inhibition also occurred during failed connections and cell crossing, though the latter did not appear to pose a risk under experimental conditions.
Balode, Z · 1996
Researchers examined micronuclei in bovine peripheral erythrocytes from female Latvian Brown cows near the Skrunda Radar and from a control area. They counted micronuclei in 2000 erythrocytes per animal at 1000x magnification using a simplified Schiff DNA staining method. The exposed group had an average of 0.6 micronuclei per 1000 erythrocytes versus 0.1 per 1000 in controls, a statistically significant difference (P < 0.01).
Wolke S, Neibig U, Elsner R, Gollnick F, Meyer R, · 1996
Urech, M, Eicher, B, Siegenthaler, J · 1996
Researchers conducted field experiments lasting one to three years alongside laboratory tests, exposing Parmelia tiliacea and Hypogymnia physodes to 2.45 GHz microwaves at 0.2, 5, and 50 mW/cm² with a control. Both species showed a substantially reduced growth rate at the highest exposure of 50 mW/cm². Temperature measurements revealed that microwaves at 2.45 GHz and 50 mW/cm² substantially increased lichen surface temperature and accelerated drying. When the same species were exposed near a 9.5 MHz short-wave broadcast transmitter at up to 235 V/m, no visible effects were detected.
Singh B, Bate LA · 1996
Researchers exposed pigs to infrared, low-power (6.1 mW cm-2), and high-power (11.4 mW cm-2) 915 MHz microwave radiation for 24 hours, with controls under natural light. Lung tissues were examined ultrastructurally and for acid phosphatase activity, and rough endoplasmic reticulum fraction was measured. Low-power microwave exposure increased the rough endoplasmic reticulum to cytoplasm ratio, prominent Golgi profiles, and secretory vesicles in pulmonary intravascular macrophages compared to other groups. High-power microwave exposure caused extracellular acid phosphatase precipitates and disrupted collagen matrix in the pulmonary interstitium. Intracellular globules appeared in infrared and low-power microwave groups but not in controls or high-power group.
Pashovskina MS, Akoev IG · 1996
A solution of rat muscle actomyosin was exposed to 2375 MHz pulse-modulated microwave radiation with rectangular pulse modulation ranging from 50 to 300 pulses per second. The study found that actomyosin ATPase activity was dependent on both modulation frequency and microwave intensity. Specific modulation frequencies were found to change the ATPase activity of actomyosin.
Kubinyi G, Thuroczy G, Bakos J, Boloni E, Sinay H, Szabo LD, · 1996
Pregnant CFLP mice were exposed to 2.45 GHz microwave radiation for 100 minutes each day throughout gestation in an anechoic chamber. Brain aminoacyl-tRNA synthetase activity decreased significantly after continuous-wave exposure but not after amplitude-modulated exposure. Liver enzyme activity increased after both continuous-wave and amplitude-modulated exposure, while body and organ weights were unaffected.
Kolosova LI, Akoev GN, Avelev VD, Riabchikova OV, Babu KS · 1996
Researchers examined the effect of low-intensity millimeter wave electromagnetic radiation on regeneration of the rat sciatic nerve after transection and microsurgical reapproximation. At the twentieth postoperative day, treated animals showed a 32% increase in regeneration distance and a 26% increase in conduction velocity compared to controls.
Elekes E, Thuróczy G, Szabó LD. · 1996
Researchers tested the effect of continuous or amplitude-modulated 2.45 GHz microwave radiation on the immune response of mice. CW exposures induced elevations of the number of antibody-producing cells in the spleen of male Balb/c mice by 37%. AM microwave exposure induced elevation of the spleen index by 15% and antibody-producing cell number by 55% in the spleen of male mice. No changes were observed in female mice.
Cleary, SF, Du, Z, Cao, G, Liu, LM, McCrady, C · 1996
Researchers investigated the effects of RF radiation exposure on interleukin 2 (IL-2) -dependent proliferation of cytolytic T lymphocytes (CTLL-2). At specific absorption rates greater than 25 W/kg, exposure produced a consistent, statistically significant reduction in CTLL-2 proliferation, especially at low IL-2 concentrations. At lower SARs, 2450 MHz exposure increased CTLL-2 proliferation immediately after exposure but reduced 24 h postexposure proliferation. The researchers found significant qualitative and quantitative differences between the effects of temperature elevation and RF radiation.
Belyaev IY, Shcheglov VS, Alipov YD, Polunin VA · 1996
Researchers studied how millimeter waves affected the genome conformational state of E. coli AB1157 cells across a frequency range of 51.64 to 51.85 GHz. The resonance frequency of 51.755 GHz did not shift with power density, though the magnitude of the effect differed significantly and depended on the power density of exposure. Sharp narrowing of the 51.755 GHz resonance at lower power densities was followed by an emergence of new resonance frequencies.
Bawin SM, Satmary WM, Jones RA, Adey WR, Zimmerman G. · 1996
Researchers used rat hippocampal slices to study how extremely-low-frequency (ELF) magnetic fields affect rhythmic slow activity (RSA), a brain rhythm associated with memory functions. Slices were exposed for 10-minute epochs to 1 or 60 Hz magnetic fields at intensities of 5.6, 56, or 560 μT, or were sham exposed. 1 Hz fields at 56 and 560 μT, but not at 5.6 μT, triggered irreversible destabilization of RSA intervals, while 60 Hz fields showed similar but not statistically significant trends. The field effects on RSA did not occur when nitric oxide (NO) synthesis was pharmacologically inhibited.
Lai H, Singh NP · 1996
Researchers investigated single- and double-strand DNA breaks in rat brain cells after acute exposure to radiofrequency electromagnetic radiation. Rats received acute 2-hour exposure to pulsed or continuous-wave 2450-MHz radiofrequency electromagnetic radiation, producing a whole-body average-specific absorption rate of 1.2 W/kg. An increase in both types of DNA strand breaks was observed after exposure to either the pulsed or continuous-wave radiation, with no significant difference between the two forms.
Unknown authors · 1995
Unknown authors · 1995
Researchers exposed B-lineage lymphoid cells to low energy electromagnetic fields and found stimulation of Lyn and Syk kinases. EMF exposure enhanced tyrosine phosphorylation in Syk-deficient cells but not in Lyn-deficient cells. Activation of Lyn kinase was found to be sufficient and mandatory for EMF-induced tyrosine phosphorylation.
Unknown authors · 1995
High or very high wire codes were associated with an adjusted odds ratio of 1.8 (95% CI 0.9-3.4) for lymphoma. Very high current codes showed an odds ratio of 6.8 (95% CI 1.6-28.5), and outdoor magnetic fields of 2.0 mG or greater yielded odds ratios of 1.5-1.9. Risk was higher among dogs spending more than 25% of the day outdoors.
Unknown authors · 1995
The study examined childhood cancer risk in relation to factors indicating magnetic field exposure from ground currents in homes. Researchers obtained plumbing conductivity data from water suppliers for 347 cases and 277 controls from a Denver area study. Children in homes with conductive plumbing had a matched odds ratio of 1.72, which rose to 3.00 for residentially stable participants. A metric of nonvertical magnetic fields above median intensity showed a matched odds ratio of 4.0, and similar associations appeared in an independent Seattle leukemia dataset.
Unknown authors · 1995
Researchers exposed human lymphoid cells immortalized by Epstein-Barr virus and HL60 leukemic cells to 50 Hz magnetic fields at 10 μT or 1 mT for periods ranging from 20 minutes to 72 hours. C-myc transcript levels were measured by Northern blot analysis normalized to the GaPDH gene. No statistically significant difference in c-myc transcript levels was observed between exposed and control cells for either cell type at any exposure duration, and the same result was found in cells synchronized in G0/G1 phase.
Unknown authors · 1995
Researchers performed an extensive series of experiments with human HL60 and Daudi cells incorporating blind exposures and internal standards. Exposure conditions covered flux densities from 5.7 microT to 10 mT and durations from 20 to 60 minutes. No alteration in the human MYC gene (c-myc) or beta-actin steady-state mRNA levels was observed.
Unknown authors · 1995
The study used quantitative Northern analysis to measure MYC and beta-actin mRNA levels in human leukemic HL60 cells. Cells were exposed to 60 Hz sinusoidal magnetic fields at 0.57, 5.7, or 57 microT for 20 minutes using a new field-exposure system designed to optimize any response. No significant effect of the electromagnetic fields on gene expression was observed with any of the exposure systems or analytical methods.
Unknown authors · 1995
This opinion piece reviews possible health effects of microwave or radar exposure in military, broadcasting, and occupational settings. The author notes that few studies have reliable dose estimates, none have accurate individual dosages, and none show tissue heating or short-term effects.
Sherry CJ, Blick DW, Walters TJ, Brown GC, Murphy MR · 1995
Researchers examined the effect of acute ultrawideband electromagnetic radiation exposure on monkeys performing a Primate Equilibrium Platform task. The exposure had no effect on task performance when tested immediately after exposure. Each monkey was exposed twice for 2 minutes at a pulse repetition rate of 60 Hz with a peak electric field strength of 250 kV/m.
Pakhomov AG, Dubovick BV, Degtyariov IG, Pronkevich AN · 1995
Pakhomov AG, Dubovick BV, Degtyariov IG, Pronkevich AN · 1995
Researchers studied the combined effects of microwave radiation and drugs on an isolated frog auricle preparation. Exposure to pulse-modulated 915 MHz microwaves for up to 40 minutes had no effect on the rate or amplitude of spontaneous auricle twitches unless the absorbed power caused heating. Caffeine (1 mM) strongly increased the average heart power, and this effect was significantly augmented by about 15% under burst-type pulsed microwaves with an average SAR of 8-10 W/kg, while heating was only approximately 0.1°C.