Browse 6,486 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 2,339 studies (Human Studies)
Unknown authors · 2006
The aim of the studies was to investigate possible alterations in the cellular and neuronal systems of electrohypersensitive persons' skin. Age- and sex-matched persons without symptoms served as controls. Immunohistochemistry with antisera to previously characterized marker substances was used. Preliminary data indicate various alterations in the skin of electrohypersensitive persons.
Unknown authors · 2006
Researchers conducted telephone interviews between May and June 2004 with a representative sample of 2048 Swiss residents aged over 14 years. The study found a 5% prevalence of electromagnetic hypersensitivity with a 95% confidence interval of 4% to 6%. Among those with electromagnetic hypersensitivity, the most common complaints were sleep disorders at 43% and headaches at 34%. 53 percent of the population were worried about adverse health effects from EMF without attributing their own health symptoms to them.
Unknown authors · 2006
The comment was published in Bioelectromagnetics in December 2006. The authors are Kheifets, Mezei, and Greenland from the University of California, Los Angeles.
Unknown authors · 2006
Unknown authors · 2006
Researchers conducted a cross-sectional study of 780 children aged 0-12 years in two areas of Ismailia, Egypt. The exposed group comprised 390 children living within 50 meters of high voltage power lines, and the control group comprised 390 children from another area. Standard anthropometric measurements and hand X-rays for bone maturation were performed. Exposed children showed significantly reduced head and chest circumferences and height at all ages, and a significant delay in carpal bone ossification.
Unknown authors · 2006
Researchers reanalyzed data from a previous study on 6-OHMS excretion in 60 women occupationally exposed to extremely low-frequency magnetic fields. Women were classified into four groups based on magnetic field exposure and light-at-night exposure. The group exposed to both magnetic fields and light at night had the lowest 6-OHMS excretion. The authors suggest that daytime magnetic field exposure may enhance the effects of nighttime light exposure on melatonin production.
Unknown authors · 2006
Researchers conducted a population-based case-control study covering areas with 54% of Japanese children, analyzing 312 cases of acute lymphoblastic or myelocytic leukemia and 603 matched controls. Weekly mean magnetic field levels were measured in the child's bedroom, with measurements for each case-control set taken close in time to control for seasonal variation. The odds ratio for all leukemia combined was 2.6 (95% CI 0.76–8.6) and for acute lymphoblastic leukemia alone was 4.7 (95% CI 1.15–19.0) for bedroom fields of 0.4 μT or higher versus below 0.1 μT.
Unknown authors · 2006
They examined trends in EMF exposure and leukemia rates separately and then compared the two trends. Both incidence rates and exposures increased, but the many approximations and assumptions prevent the ecologic evidence from providing meaningful evidence for or against a causal link.
Unknown authors · 2006
Researchers estimated the possible public health impact of ELF exposure on childhood leukemia using attributable fractions. They used ELF exposure distributions from various countries and dose-response functions from two pooled analyses. Attributable fractions remained below 10%, with point estimates from less than 1% to about 4%. Worldwide, 100 to 2,400 childhood leukemia cases were possibly attributable to ELF exposure.
Unknown authors · 2006
Hondou T et al et al. · 2006
Researchers conducted a numerical investigation using a realistic human body model and an actual elevator size to assess SAR from a mobile phone modeled as a dipole antenna at 16 mm from the head. They used finite-difference time-domain technique with a supercomputer at frequencies of 900, 1500, and 2000 MHz with 250 mW transmitting power. Results showed that peak 10-g SAR depends on passenger and antenna position, with substantial increases in whole-body average SAR and peak 10-g SAR in the elevator over free-space values. However, the maximum values met international RF safety guidelines, with whole-body average SAR at 4.4% and peak spatial-average SAR at 78% of the guideline.
Unknown authors · 2006
Researchers conducted six case-control studies from the late 1990s on brain tumours, salivary gland tumours, non-Hodgkin lymphoma, and testicular cancer, assessing exposure via self-administered questionnaires. For acoustic neuroma, analogue phones gave an odds ratio of 2.9 (95% CI 2.0–4.3), digital phones 1.5 (95% CI 1.1–2.1), and cordless phones 1.5 (95% CI 1.04–2.0). For astrocytoma grade III-IV, analogue phones gave an odds ratio of 1.7 (95% CI 1.3–2.3), digital phones 1.5 (95% CI 1.2–1.9), and cordless phones 1.5 (95% CI 1.1–1.9). Odds ratios rose with longer latency, peaking at over 10 years since first use, while lower odds ratios were seen for astrocytoma grade I-II. No association was found for salivary gland tumours, non-Hodgkin lymphoma, or testicular cancer.
Takebayashi T et al. · 2006
Regular mobile phone use showed no significant increase in risk, with an odds ratio of 0.73 (95% CI 0.43 to 1.23). No increase in risk was observed for cumulative years of use or cumulative call time.
Yuasa K et al. · 2006
Researchers studied somatosensory evoked potentials in 12 normal volunteers before and after 30 minutes of mobile phone exposure compared with sham exposure. In 7 of the 12 volunteers, the recovery function of the somatosensory evoked potential was also measured. Neither the somatosensory evoked potentials nor their recovery function were affected by the mobile phone exposure or sham exposure.
Wang LL, Chen GD, Lu DQ, Chiang H, Xu ZP. · 2006
Researchers intermittently exposed MCF-7 cells to GSM 1800 MHz RF EMF modulated by 217 Hz for 24 hours at SARs of 2.0 W/kg or 3.5 W/kg. A small number of differentially expressed genes were found after exposure. Reproducible analysis yielded no genes at 2.0 W/kg and five up-regulated genes at 3.5 W/kg. The five genes identified at 3.5 W/kg could not be confirmed by RT-PCR. The authors concluded that the study did not provide clear evidence of distinct gene expression changes under the experimental conditions.
Vijayalaxmi · 2006
Researchers exposed peripheral blood lymphocytes from healthy volunteers to 2.45 GHz or 8.2 GHz pulsed-wave RF radiation for 2 hours. They measured chromosomal aberrations and micronuclei to assess cytogenetic damage. The RF-exposed lymphocytes showed no significant increase in damage compared to sham-exposed lymphocytes. Gamma-irradiated positive control cells showed significantly more damage than both RF-exposed and sham-exposed cells.
Tuschl H, Novak W, Molla-Djafari H. · 2006
The study assessed whether GSM-modulated RF fields have adverse effects on the functional competence of human immune cells. Exposure was performed at GSM Basic 1950 MHz with an SAR of 1 mW/g in an intermittent mode of 5 minutes on and 10 minutes off for 8 hours. Researchers evaluated intracellular cytokine production, immune-relevant gene activity, and cytotoxicity of lymphokine-activated killer cells using blood from at least 15 donors per parameter. No statistically significant effects of exposure were found.
Terao Y, Okano T, Furubayashi T, Ugawa Y · 2006
Researchers used a double-blind, counterbalanced crossover design with 16 normal subjects. Subjects performed a visuo-motor precued choice reaction time task before and after 30 minutes of mobile phone EMF exposure or sham exposure. Reaction times and movement times under different precue conditions were not affected by real or sham exposure.
Schüz J et al. · 2006
Researchers followed a nationwide cohort of 420,095 Danish cellular telephone subscribers from 1982 to 1995 through 2002 for cancer incidence. A total of 14,249 cancers were observed with a standardized incidence ratio of 0.95 (95% CI 0.93 to 0.97) for men and women combined. Cellular telephone use was not associated with increased risk for brain tumors, acoustic neuromas, salivary gland tumors, eye tumors, or leukemias. Among long-term subscribers of 10 years or more, there was no increased risk for brain tumors and no trend with time since first subscription. Smoking-related cancer risk was decreased among men but increased among women.
Schuz J et al. · 2006
Researchers conducted a population-based case-control study in Germany with 747 brain tumor cases and 1494 matched controls aged 30 to 69 years. Exposure was assessed by the location of a DECT cordless phone base station close to the bed as a proxy for continuous low-level radiofrequency electromagnetic field exposure during the night. Estimated odds ratios were 0.82 (95% CI 0.29-2.33) for glioma and 0.83 (0.29-2.36) for meningioma, with no increasing risk observed with longer exposure duration.
Schuz J et al. · 2006
Researchers conducted a population-based case-control study in three German regions, enrolling 366 glioma cases, 381 meningioma cases, and 1,494 controls. Overall cellular phone use was not associated with brain tumor risk, with odds ratios of 0.98 for glioma and 0.84 for meningioma. Among long-term users of 10 or more years, glioma risk was elevated (odds ratio 2.20) but meningioma risk was not, and cordless phone use showed no association with either tumor.
Scarfi MR et al. · 2006
Researchers exposed human peripheral blood lymphocytes from 10 healthy donors to 900 MHz GSM signals at SARs of 0, 1, 5, and 10 W/kg for 24 hours. The cytokinesis-block micronucleus assay showed no genotoxic or cytotoxic effects across the range of SARs investigated. Two independent laboratories (ENEA Rome and CNR-IREA Naples) each tested five donors and cross-scored slides, confirming the findings.
Sanchez S et al. · 2006
Apoptosis was not induced in isolated cells and reconstructed epidermis thickness and proliferation were unchanged. No change in heat shock protein expression was observed in isolated keratinocytes. A slight but significant increase in Hsp70 expression was observed in reconstructed epidermis after 3 and 5 weeks of culture. Fibroblasts showed a significant decrease in Hsc70 depending on culture conditions.
Russo R et al. · 2006
The study tested 168 volunteers on three cognitive tasks: a simple reaction task, a vigilance task, and a subtraction task. Participants completed the tasks in two sessions, one with RF exposure (GSM or CW signals) and one with sham exposure. No significant effects of RF exposure on performance were found for either GSM or CW signals, regardless of phone position.
Remondini D et al. · 2006
Researchers exposed six human cell types to 900 and 1800 MHz microwaves and analyzed gene expression using whole-genome cDNA arrays. NB69 neuroblastoma cells, T lymphocytes, and CHME5 microglial cells did not show significant changes in gene expression. EA.hy926 endothelial cells, U937 lymphoblastoma cells, and HL-60 leukemia cells showed between 12 and 34 up- or down-regulated genes. The affected gene families did not indicate a stress response.