Browse 6,486 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 2,339 studies (Human Studies)
Perentos N, Croft RJ, McKenzie RJ, Cvetkovic D, Cosic I · 2007
Researchers used a fully counterbalanced cross-over design with 12 participants to test mobile phone-like RF exposure effects on EEG. Exposures lasted 15 minutes using a dipole antenna more closely resembling a real GSM handset.
Irlenbusch L et al. · 2007
Researchers measured the visual discrimination threshold in 33 subjects during both RF and sham exposures. Each experiment consisted of two 30-minute periods with a 5-minute break, and the threshold was recorded every 10 seconds. The RF exposure used a 902.4 MHz GSM signal pulsed at 217 Hz with a power flux density of 1 W/m². No statistically significant difference in the threshold was found between RF and sham exposures.
Inomata-Terada S et al. · 2007
They also assessed short-interval intracortical inhibition reflecting GABAergic interneuron function using paired-pulse TMS. No effects of exposure were found on MEPs or SICI in healthy volunteers, and no effects on MEPs were observed in two multiple sclerosis patients despite conduction block after a hot bath.
Hirose H et al. · 2007
Researchers performed an in vitro study of low-level RF fields from IMT-2000 base stations to test if modulated signals cause hsp27 phosphorylation and overexpression. No significant differences in phosphorylated hsp27 at serine 82 or in hsp gene expression were found between exposed and sham-exposed groups.
Haarala C et al. · 2007
Researchers studied the effects of continuous wave and pulsed wave electromagnetic fields on cognitive function in 36 healthy male subjects. Subjects performed cognitive tasks during exposure to continuous wave, pulsed wave, and sham fields, with left- and right-sided exposure in a double-blind design. No effects were found between EMF conditions, hemisphere exposures, or between the control and experimental groups.
Fritzer G et al. · 2007
Cinel C, Boldini A, Russo R, Fox E · 2007
Wilén J, Wiklund U, Hörnsten R, Sandström M. · 2007
The study aimed to investigate changes in heart rate variability among RF plastic sealer operators. Researchers found significantly increased total HRV and VLF power during nighttime in RF operators compared to a control group. This finding, together with a previous finding of lower nighttime heart rate, indicates a relative increase in parasympathetic cardiac modulation in RF operators.
Tahvanainen K et al. · 2007
Roosli M, Michel G, Kuehni CE, Spoerri A · 2007
Researchers used Swiss national mortality registry data from 1969 to 2002 to calculate age-standardized brain tumour mortality rates per 100,000 person-years. The study period was split before and after 1987 when analogue mobile technology was introduced. Over the whole period, mortality increased significantly in older age groups (60-74 and 75+ years) but not in younger groups. From 1987 onward, brain tumour mortality rates were relatively stable in all age groups.
Panagopoulos DJ, Chavdoula ED, Nezis IP, Margaritis LH · 2007
Researchers used the TUNEL assay to detect DNA fragmentation in early and mid-oogenesis stages of Drosophila melanogaster. Flies were exposed to GSM 900-MHz or DCS 1800-MHz radiation from a mobile phone for a few minutes daily over the first six days of adult life. Both radiation types induced DNA fragmentation in all cell types of the egg chamber, leading to degeneration of egg chambers. Germarium and stages 7-8 were the most sensitive developmental stages, with germarium even more sensitive than stages 7-8.
Lonappan A, Rajasekharan C, Thomas V, Bindu G, Mathew KT. · 2007
Researchers measured the dielectric properties of human colostrum and breast milk at microwave frequencies using a rectangular cavity perturbation technique at the S-band. Dielectric constants of the samples increased as weeks elapsed, attributed to reduced fat content and increased lactose concentration.
Liu XY et al. · 2007
Researchers interviewed 200 women with early spontaneous abortion and age-matched controls and used multivariable logistic regression. In single-factor analysis, higher proportions of watching TV ≥10 hours/week, computer use ≥45 hours/week, using copycat, microwave oven and mobile phone, and proximity to switch rooms ≤50 m and launching towers ≤500 m were found in cases versus controls. After multivariable adjustment, using a microwave oven and mobile phone, exposure to abnormal renovation smell for ≥3 months, emotional stress in early pregnancy, and prior spontaneous abortion remained significantly associated with miscarriage risk. The odds ratios for these risk factors were 2.23 and 4.63.
Lahkola A et al. · 2007
Researchers conducted a population-based case-control study of 1,522 glioma patients and 3,301 controls. Regular mobile phone use was not associated with increased glioma risk (OR = 0.78, 95% CI: 0.68–0.91). No significant associations were found for duration of use, years since first use, cumulative calls, or cumulative hours, though a linear trend showed a small increase per 100 hours of cumulative use (OR = 1.006 (1.002, 1.010) per 100 hr). For more than 10 years of use on the same side as the tumor, a borderline significant increased odds ratio of 1.39 (95% CI: 1.01–1.92) was observed, while use on the opposite side showed no increase (OR = 0.98, 95% CI: 0.71–1.37).
Krause CM, Pesonen M, Haarala Bjornberg C, Hamalainen H. · 2007
Researchers recruited two groups of 36 male participants each, one performing an auditory memory task and the other a visual working memory task under six exposure conditions. The study aimed to partially replicate earlier work and investigate effects of mobile phone EMF on event-related desynchronisation/synchronisation EEG responses during cognitive processing. EMF exposure produced modest effects on alpha band oscillatory responses but no effects on behavioural measures. The EEG effects were varying, unsystematic, and inconsistent with previous reports.
Hours M et al. · 2007
Cases were histologically confirmed or based on radiological images, and controls were matched for gender, age, and residence, drawn from electoral rolls. Detailed exposure information was collected via face-to-face interviews, and conditional logistic regression estimated odds ratios. Regular cell phone use was not associated with increased risk of neuroma, meningioma, or glioma. A tendency for increased glioma risk was observed among the heaviest users, but the study had limited statistical power and results need verification in the international analysis.
Hardell LO et al. · 2007
Researchers reviewed two cohort studies and 16 case-control studies on cellular phone use and brain tumour risk, focusing on use for 10 or more years and ipsilateral exposure. The cohort study was considered of limited value due to methodological shortcomings, and most case-control results were based on low numbers. Four case-control studies found an association with acoustic neuroma for at least 10 years' use, while six studies reported increased odds ratios for malignant brain tumours, especially for ipsilateral exposure. A meta-analysis found ipsilateral cell phone use for 10 or more years yielded an odds ratio of 2.4 for acoustic neuroma and 2.0 for glioma.
Hansson Mild K, Hardell L, Carlberg M. · 2007
The study presents a pooled analysis of two case-control studies on the association of brain tumours with mobile phone use. Use of analogue cellular phones increased the risk for acoustic neuroma by 5% per 100 hours of use. The risk increased for astrocytoma grade III-IV with latency period, with highest estimates for more than 10 years since first use. Risk increased per year of use for analogue phones by 10%, digital phones by 11%, and cordless phones by 8%. For all studied phone types, odds ratios for brain tumours, mainly acoustic neuroma and malignant brain tumours, increased with latency period, especially for astrocytoma grade III-IV.
Ha M, Im H, Lee M, Kim HJ, Kim BC, Gimm YM, Pack JK. · 2007
Researchers selected leukemia and brain cancer patients under age 15 and matched controls from 14 South Korean hospitals using the Medical Insurance Data System. Exposure to RFR from 31 AM transmitters of at least 20 kW was estimated using a GIS-based prediction program calibrated with measurements. The odds ratio for all leukemia was 2.15 for children within 2 km of the nearest transmitter versus those beyond 20 km. For total RFR exposure, lymphocytic leukemia odds ratios were 1.39 and 1.59 in the second and third quartiles versus the lowest, and brain cancer was not associated with AM RFR.
Erdreich LS et al. · 2007
The study's objective was to measure environmental, behavioral, and engineering factors affecting RF power output of GSM mobile phones during operation. They estimated RF-field exposure of volunteers using software-modified phones that recorded output power settings during a 5-day period. The largest factor affecting energy output was study area, followed by user movement and location, hands-free device use, and urbanicity, though the latter two accounted for trivial variance.
Clark ML et al. · 2007
Researchers measured estrogen and melatonin metabolites in overnight urine from women living near radio and television transmitters. Among premenopausal women, no associations were found between RF or 60-Hz exposure and either metabolite.
Barker AT et al. · 2007
Researchers conducted a double-blind study with 120 healthy volunteers who completed six exposure sessions with GSM and TETRA handset signals. They also measured blood catechols before and after exposure, heart rate variability during exposure, and 24-hour ambulatory blood pressure after exposure. The study had power to detect mean arterial pressure changes smaller than 1 mmHg, but no measurement showed any effect attributable to radiofrequency exposure. A single statistically significant decrease of 0.7 mmHg in mean arterial pressure occurred with GSM handsets in sham mode, which the authors suggest may be due to a slight increase in handset operating temperature.
Arns M, Van Luijtelaar G, Sumich A, Hamilton R, Gordon E. · 2007
Researchers used standardized data from the Brain Resource International Database to examine the relationship between mobile phone usage, personality, and brain function in 300 participants. The findings suggest a subtle slowing of brain activity related to mobile phone use that is not explained by personality differences. These changes are still within normal physiological ranges. Better executive function in mobile phone users may reflect more focused attention, possibly associated with a cognitive training effect from frequently making phone calls in distracting places. Participants were divided into three groups based on the frequency and duration of their mobile phone usage.
Al-Dousary SH. · 2007
The study aimed to observe mobile phone induced sensorineural hearing loss. A case of sensorineural hearing loss due to Global System for Mobile Communications mobile phone use in a 42-year-old male was reported.
Alanko T, Hietanen M · 2007
Researchers assessed worker exposure to radiofrequency fields in two medium-sized antenna towers. The towers had transmitting antennas from mobile phone networks, radio, digital TV sub-stations, and amateur radio. Measurements were taken close to the tower ladders. All measured values were below ICNIRP occupational reference levels.