Carrubba S, Frilot C 2nd, Chesson AL Jr, Marino AA · 2010
Researchers recorded EEGs from six standard locations in 20 volunteers to detect brain potentials triggered by a pulse of the type produced by mobile phones. Evoked potentials having the expected latency were found in 90% of the volunteers, as assessed using a nonlinear method of EEG analysis. Evoked potentials were not detected when the EEG was analyzed using time averaging. The possibility of systematic error was excluded by sham-exposure analyses.
Croft RJ et al. · 2010
Researchers tested whether adolescents and the elderly are more sensitive to mobile phone-related bioeffects than young adults, using both 2G GSM and 3G W-CDMA exposures. Resting alpha activity in the 8-12 Hz band of the EEG was recorded and compared between conditions in a double-blind crossover design, with each participant receiving sham, 2G, and 3G exposures separated by at least 4 days. Young adults showed greater alpha activity in the 2G condition compared to sham, but no effect was found in adolescents or the elderly, and 3G exposure produced no effect in any group.
Bak M, Dudarewicz A, Zmyślony M, Sliwinska-Kowalska M · 2010
Researchers assessed the effect of electromagnetic field from the GSM mobile phone system on human brain function in volunteers. The assessment was based on event related potentials, with P300 latency, amplitude, and latency of the N1, N2, P2 waves analysed. The statistical analysis revealed an effect of EMF on P300 amplitude, with lower amplitudes observed only during exposure. No statistically significant changes were noted in the latencies of the N1, N2, P2 waves or in the latency of the P300 itself.
Guler G, Tomruk A, Ozgur E, Seyhan N. · 2010
Researchers investigated oxidative DNA damage and lipid peroxidation levels in the brain tissue of pregnant and non-pregnant New Zealand White rabbits and their newborns exposed to radiofrequency radiation. The rabbits were exposed to radiofrequency radiation at 1800 MHz GSM at 14 V/m for 15 minutes per day over 7 days. MDA and 8-OHdG levels in exposed pregnant and non-pregnant rabbits were significantly increased compared to controls, but no difference was found in the newborns.
Barry J. Maron et al. · 2009
Researchers identified 1866 sudden deaths in competitive athletes aged 19+6 years across 38 sports in the United States from 1980 to 2006. Cardiovascular disease accounted for 56% of deaths, with hypertrophic cardiomyopathy at 36% and congenital coronary artery anomalies at 17%.
• Smartphones may be the cause of the increase in self-reported short sleep duration et al. · 2009
Researchers drew from yearly, nationally representative surveys of adolescents conducted since 1991 and 2007, comprising a total of 369,595 participants. Compared to 2009, adolescents in 2015 were 16%-17% more likely to report sleeping less than 7 hours a night, with increases appearing after 2011-2013. New media screen time increased over the period and was associated with higher odds of short sleep duration, with a clear exposure-response relationship for electronic devices after 2 or more hours of use per day. Other activities linked to short sleep, such as homework, paid work, and TV watching, were relatively stable or reduced, making them unlikely causes of the sudden increase in short sleep. Short sleep prevalence increased from 35% to 41% and from 37% to 43%.
Unknown authors · 2009
Researchers conducted a cytogenetic monitoring study on 55 workers from transformer and distribution line stations in Bursa, Turkey, and 17 controls. Chromosomal aberration and micronucleus frequencies were significantly higher in exposed workers than in controls. Chromosomal aberration frequency increased significantly with years of exposure. Smoking did not significantly affect chromosomal aberration or micronucleus levels in either group.
Unknown authors · 2009
Researchers exposed 10 male and 10 female healthy volunteers to a 200 microT, 60 Hz magnetic field for 4 hours, with five male and five female volunteers as sham controls. There was no evidence of increased DNA damage or increased micronuclei in the magnetic field exposed group. A 1.5 Gy gamma-irradiation positive control caused a significant increase in both DNA damage and micronuclei.
Shckorbatov YG et al. · 2009
Researchers exposed isolated human buccal epithelium cells to microwaves of frequency 35 GHz at a surface power density of 30 microW/cm(2). Chromatin state was examined by light and electron microscopy, and membrane integrity was assessed with vital indigo carmine staining. Microwave exposure induced chromatin condensation, and the extent of condensation depended on wave polarization. Linearly polarized waves also caused cell membrane damage, shown by increased vital dye staining.
Unknown authors · 2009
The study reviewed recent trends in public health in Sweden using data from official Swedish registries. Population health generally improved during the early 1990s but suddenly started to deteriorate from 1997 onwards. The authors state that this dramatic change is not likely explained only by improved diagnostics and that a connection with increasing GHz radiation exposure cannot be ruled out.
Unknown authors · 2009
A morbidity study in a Rome district under a 60 kV line included 345 subjects resident between 1954 and 2003, excluding those deceased before 1998. Residential magnetic field levels were estimated from current load, line characteristics, and distance from the power line, and the area was divided into sub-areas with differing levels. Standardized morbidity ratios were computed from hospital discharge records for 1998 to 2003. Non statistically significant increases were observed for all and primary cancers, while primary cancers were significantly increased among subjects with more than 30 years' residence and latency, and no increase was seen in neoplastic haematological diseases.
Unknown authors · 2009
Data were obtained from 317 individuals, including 192 UK Adult Brain Tumour Study subjects, 101 occupational proxies, and 24 interest readings. Average exposure was significantly higher at work than at home, and elevated occupational exposure was found for welding trades, printers, telephonists, and filing and other records assistants.
Unknown authors · 2009
A research team from ISS searched for a suitable location to implement an epidemiological study aimed at a wide range of outcomes for which a priori hypotheses could be formulated. The project's recently published findings showed an increase in primary and secondary malignant neoplasms, ischaemic disease, and haematological diseases. The authors recommended that future studies address the most exposed sectors of the population, consider different outcomes, and follow protocols that enable pooled analyses.
Unknown authors · 2009
Researchers recruited 548 childhood brain tumor cases and 760 controls from Québec and Ontario between 1980 and 2002, interviewed their mothers, and estimated occupational ELF-MF exposure in microTesla using individual estimates or a job-exposure matrix with cumulative, average, and maximum metrics. Using the average exposure metric before conception, an increased risk for astroglial tumors was observed (OR = 1.5, 95% CI = 1.0-2.4), and during pregnancy significantly increased risks were found for astroglial tumors (OR = 1.6, 95% CI = 1.1-2.5) and all childhood brain tumors (OR = 1.5, 95% CI = 1.1-2.2). Based on job titles, sewing machine operators showed a twofold risk increase for astroglial tumors (OR = 2.3, 95% CI = 0.8-6.3) and all childhood brain tumors (OR = 2.3, 95% CI = 1.0-5.4).
Unknown authors · 2009
In 121 workers, individual ELF-MF exposure was monitored for two work shifts and exposure levels were calculated as time-weighted averages. Subjects were grouped into low (≤0.2 μT), medium (0.21–0.99 μT), and higher (≥1 μT) exposure categories. NK activity was significantly reduced in the higher exposure group compared with the low exposure group (p<0.01), while the medium group showed a non-significant reduction.
Unknown authors · 2009
Researchers conducted a cytogenetic monitoring study on 55 workers at transformer and distribution line stations and 17 controls to assess genotoxic risk from ELF-EMF exposure. Chromosomal aberration and micronucleus frequencies were significantly higher in exposed workers than in controls. Chromosomal aberration frequency increased with years of exposure, while smoking did not significantly affect either marker.
Unknown authors · 2009
Researchers built a movable reflecting wall to test human sensitivity to radio-frequency standing waves from a radio-TV tower. When the reflector moved, the standing-wave pattern shifted and changed the electromagnetic intensity in the test subject's body. A computer recorded hand-movement transducer signals and RF-meter readings from 100 MHz dipole antennas. Nine of the 29 adults showed hand-movement patterns that matched the RF-meter. Six participants showed responses that did not correlate with the RF-meter, and 14 participants showed no reaction.
Unknown authors · 2009
The meta-analysis of brain tumors gave an overall glioma odds ratio of 1.0 with a 95% confidence interval of 0.9 to 1.1. For acoustic neuroma the overall odds ratio was 1.0, increasing to 1.3 with a 10-year latency, and ipsilateral exposure gave an odds ratio of 1.6. No consistent pattern of increased risk was found for meningioma, and no consistent pattern of association was found for salivary gland tumors, non-Hodgkin lymphoma, or testicular cancer.
Unknown authors · 2009
Recent reviews report that firefighters have an increased risk of several cancers including leukemia, multiple myeloma, non-Hodgkin's lymphoma, male breast cancer, malignant melanoma, and cancers of the brain, stomach, colon, rectum, prostate, urinary bladder, testes, and thyroid. Respiratory system cancers are usually not increased in firefighters, unlike in workers exposed to known inhaled carcinogens. The pattern of cancers in firefighters strongly overlaps the pattern seen in workers exposed to electromagnetic fields and radiofrequency radiation.
Unknown authors · 2009
Researchers examined the feasibility of a cohort study on health risks from occupational radiofrequency electromagnetic field exposure in Germany. They developed criteria covering exposure level and duration, cohort assembly, and disease endpoint ascertainment. Twenty occupational settings and amateur radio operators were reviewed, identifying broadcasting technicians, amateur radio operators, and dielectric heat sealer workers as promising. Further analysis found dielectric heat sealer workers infeasible due to small numbers and complex exposure assessment, while amateur radio operators had limited exposure assessment and broadcasting technicians were too few.
Unknown authors · 2009
Researchers conducted a case-control study of 180 adult leukemia cases and 756 age- and sex-matched hospital controls in Bangkok, Thailand. Data were collected by interview and analyzed using unconditional logistic regression to estimate odds ratios. Myeloid leukemia was associated with benzene exposure, other solvents, occupational pesticides, and working with or near powerlines. No associations were found for diagnostic X-rays, cigarette smoking, or other occupational exposures.
Unknown authors · 2009
Researchers monitored 455 calls in 30 adolescents using hardware-modified phones for one week to log laterality, number, and duration of calls. Agreement between measured and self-reported laterality was modest (κ=0.3), concordance for call number was fair (ICC=0.38), and for call duration was poor (ICC=0.01). The authors concluded that adolescent self-reported laterality has limited validity and that self-reported phone use by number and duration is generally inaccurate but comparable to adult studies.
Unknown authors · 2009
Researchers analyzed glioma and meningioma incidence trends from 1974 to 2003 using national cancer registry data from Denmark, Finland, Norway, and Sweden. The study included 59,984 men and women aged 20-79 years diagnosed with brain tumors in a population of 16 million adults. From 1974 to 2003, glioma incidence increased by 0.5% per year among men and 0.2% per year among women. Meningioma incidence increased by 0.8% per year among men and by 3.8% per year among women after the early 1990s. No change in incidence trends was observed from 1998 to 2003 when mobile phone associations would be informative.
Tamer A, Gündüz H, Ozyildirim S · 2009
Researchers evaluated the effect of a mobile phone on cardiac electrical activity by measuring heart rate variability, QT and P dispersions, and blood pressure while the phone was placed on the precordium. In the first step, no statistically significant differences were found in blood pressure, heart rate, P-wave dispersion, QT dispersion, or QT corrected dispersion. In the second step, no significant differences were observed in blood pressure, heart rate, or heart rate variability parameters during 30-minute Holter recordings with the phone on versus off.
Stang A et al. · 2009
Researchers conducted a case-control study of 459 uveal melanoma case patients matched with population, ophthalmologist, and sibling control subjects. Regular mobile phone use showed no association with uveal melanoma risk across all control groups. No trend was observed for cumulative exposure measures. The study did not confirm earlier findings of increased risk.
