Hardell L, Carlberg M, · 2014
In total, 1498 cases (89% participation) and 3530 controls (87% participation) were included. Mobile phone use increased glioma risk with an overall odds ratio of 1.3 (95% CI 1.1–1.6), rising to 3.0 (95% CI 1.7–5.2) for latency over 25 years. Cordless phone use increased glioma risk with an overall odds ratio of 1.4 (95% CI 1.1–1.7), with highest risk in the >15–20 years latency group (OR 1.7, 95% CI 1.1–2.5). Ipsilateral mobile phone use had an odds ratio of 1.8 (95% CI 1.4–2.2) and ipsilateral cordless phone use had an odds ratio of 1.7 (95% CI 1.3–2.1). The highest risk was for glioma in the temporal lobe, and first use before age 20 gave higher odds ratios than later first use.
Gorpinchenko I, Nikitin O, Banyra O, Shulyak A. · 2014
Researchers exposed sperm samples from 32 healthy men to mobile phone radiation in standby/talk mode for 5 hours. Exposed samples showed significantly lower progressive motility, higher non-progressive motility, and higher DNA fragmentation compared to unexposed samples. A correlation was found between radiation exposure, DNA fragmentation level, and decreased sperm motility.
Ghanmi A, Varsier N, Hadjem A, Conil E, Picon O, Wiart J. · 2014
Researchers analyzed how phone position affects brain exposure by comparing SAR from two GSM phone models. They tested 80 phone positions selected via Latin hypercube sampling. They estimated SAR10g in the head, SAR1g in the brain, and SAR in brain structures at 900 and 1800 MHz. Results show SAR distributions in the brain are sensitive to phone position. For 5–10% of positions, SAR10g in head and SAR1g in brain were 20% higher than the standard cheek position, and the SAM model was conservative for 95% of positions.
Geronikolou S et al. · 2014
Egg laying in the second generation was compared between exposed and non-exposed cultures using advanced statistics. The 900 MHz exposure showed statistical significance, while the cordless phone exposure showed limited statistical significance. The researchers also calculated and simulated the near-field radiation patterns inside the vials. They found that the power difference between the two fields becomes null when the cylinder radius and antenna height increase.
Denny-Bas V, Zmirou-Navier D, De Tychey C, Briançon S. · 2014
A self-administered questionnaire was sent to volunteers and achieved a 72% response rate. The questionnaire measured perceived risk and 11 psychometric properties on a 0-to-10 visual analogue scale, and anxiety was assessed with the Spielberger questionnaire. Mean risk scores were higher for passive and active smoking (8.75 and 8.31) than for cell phones and masts (4.44 and 4.73). Psychometric property scores for cell phones and masts were higher than for smoking, especially for dissatisfaction with information and authorities' capacity to master the risk.
Curcio G, Mazzucchi E, Marca GD, Vollono C, Rossini PM. · 2014
Researchers recorded EEG activity from 12 patients with focal epilepsy under real and sham exposure using a double-blind, crossover, counterbalanced design. Spiking activity tended to be lower during real exposure than during sham exposure. Gamma band power increased significantly during real exposure, mainly in parieto-occipital and temporal areas. Interhemispheric instantaneous coherence in the beta band increased from left temporal to right frontal regions during real exposure relative to baseline. No significant change in lagged coherence was observed.
Chiu CT, Chang YH, Chen CC, Ko MC, Li CY. · 2014
Cecil S et al. · 2014
The study investigated the functionality of several types of implants when exposed to TETRA transmitters. Researchers also examined how user exposure varied with different device carrying positions near the body and head. All exposure conditions tested produced levels well below recommended limits. Holding the transmitter in front of the mouth resulted in somewhat lower exposure than typical mobile phone like use.
Carlberg M, Hardell L. · 2014
Researchers analyzed survival of 1678 glioma patients from the 1997-2003 and 2007-2009 case-control studies. Wireless phone use with more than 20 years latency showed an increased hazard ratio of 1.7 for glioma overall. For glioblastoma multiforme, mobile phone use had a hazard ratio of 2.0 and cordless phone use a hazard ratio of 3.4 in the same latency category.
Cabot E et al. · 2014
Researchers used numerical modeling to analyze electromagnetic radiation exposure of pregnant women and their fetuses at three gestational stages in near-field and far-field conditions. When the mother was exposed at general public reference levels, the fetus was sufficiently shielded and maternal exposure remained below or on the order of the basic restriction.
Bürgi A , Scanferla D, Lehmann H. · 2014
Researchers determined duty factors for UMTS using data from 37 base stations in the Swisscom network. The average output power corresponded to about a third of the maximum power. The UMTS sample included sites from different Swiss regions and site types including rural, suburban, urban, and hotspot.
Berolo S, Steenstra I, Amick BC 3rd, Wells RP. · 2014
Self-reports of use on a typical day last week overestimated logged use, and overestimates became more variable as usage time increased. Self-reports of use yesterday also exceeded logged use, but the degree of overestimation was less than for a typical day last week. Researchers collected self-reports of six categories of device use via questionnaire and direct measures via a custom logging application from 47 participants. Bland-Altman analyses examined agreement between the two measurement approaches.
Bamiou DE et al. · 2014
They measured subjective visual vertical and horizontal from min 25 of exposure and found no effect of the emission type. However, an ear effect shifted perception opposite to the exposed ear, which the researchers attributed to handset weight or neck muscle stimulation.
Balakrishnan K et al. · 2014
The study aimed to measure serum HSP70, CRP, and hsp70 gene expression in frequent mobile phone users. The researchers enrolled 120 frequent users and 102 infrequent users as controls. Serum HSP70 and CRP were measured by ELISA and hsp70 gene expression by RT-PCR. Frequent users had significantly higher serum HSP70 and CRP concentrations and higher hsp70 gene expression than infrequent users. Serum HSP70 concentration was independent of exposure duration, whereas CRP increased with duration.
Azadi Oskouyi E et al. · 2014
In this study, 18 male rabbits were randomly divided into two experimental groups and one control group, and the experimental groups received simulated microwaves at 950 MHz with output power of 3 and 6 watts for 2 weeks, 2 h a day. The epithelial height and diameter of the epididymis decreased significantly in both the 3 watt and 6 watt groups, while testosterone level decreased significantly only in the 6 watt group. The rate of apoptosis in the epithelial cells of the epididymis increased significantly only in the 6 watt group.
Aydogan F et al. · 2014
Thirty Wistar albino rats were divided into four groups. Groups A and B served as control groups for 10 days and 40 days with six rats each, while groups C and D were exposure groups with nine rats each. The rats were exposed to 2100 MHz radiofrequency radiation simulating a third generation mobile phone for 6 hours per day, 5 days per week, for 10 or 40 days. Exposure groups showed numerous histopathological changes in the parotid gland, with more prominent changes after 40 days compared to 10 days.
Akhavan-Sigari R, Baf MM, Ariabod V, Rohde V, Rahighi S. · 2014
Researchers studied sixty-three glioblastoma patients who underwent tumor resection between 2008 and 2011. They measured p53 gene expression in central and peripheral tumor zones using RT-PCR. Among patients using cell phones three or more hours daily, 65% showed higher mutant p53 expression in the peripheral zone, a statistically significant increase. This increased mutant p53 expression was significantly correlated with shorter overall survival. The risk was not higher for ipsilateral exposure.
Aguirre E et al. · 2014
The aim of the study is to observe Analysis of estimation of electromagnetic dosimetric values from non-ionizing radiofrequency fields in conventional road vehicle environments. A dosimetric evaluation inside a conventional car is performed with an in-house 3D Ray Launching computational code and compared with measurement results of wireless sensor networks located inside the vehicle. The results can aid in an adequate assessment of human exposure to non-ionizing radiofrequency fields, taking into account the impact of the morphology and the topology of the vehicle for current as well as for future exposure limits.
Adibzadeh F et al. · 2014
Researchers performed detailed dosimetric simulations for 20 head models to quantify how head morphology affects RF dose in different brain regions. The variation in averaged SAR among heads reached up to 16.4 dB in a 1 cm³ brain cube using the field-sensor method and up to 15.8 dB in the medulla using the Talairach method. Head models were exposed to generic mobile phone fields at 835 and 1900 MHz in tilted and cheek positions. The authors concluded that head morphology is an important uncertainty source and that dosimetric analyses for specific brain regions should use real morphology.
Adachi-Mejia AM et al. · 2014
The study aimed to determine if mobile phones interfere with adolescent sleep, and researchers conducted a pilot test in a pediatric primary care practice with 454 patients aged 12 to 20 years, half female, attending a well-child visit. Adolescents completed paper-and-pencil surveys in the waiting room. More than half took their mobile phone to bed (62.9%) and kept it turned on while sleeping (56.8%). More than one-third texted after going to bed (36.7%), and 7.9% were awakened by a text two or more times per week. Almost half used their phone as their alarm (45.7%).
van der Mark M et al. · 2014
Researchers conducted a hospital-based case-control study with 444 Parkinson's disease patients and 876 age- and sex-matched controls. Occupational histories were collected via telephone interviews and linked to job-exposure matrices for extremely low-frequency magnetic fields and electrical shocks. No association was observed between Parkinson's disease risk and any of the evaluated electricity-related exposures, although reduced risk estimates appeared consistently across most exposure categories. The authors concluded that the reduced risk estimates are unlikely to represent a true protective effect.
Zhang X, Gao Y, Dong J, Wang S, Yao B, et al. · 2014
Researchers tested whether the compound Chinese medicine Kang Fu Ling could protect the heart from high power microwave injury. One hundred male Wistar rats were divided into five groups: no treatment, microwave radiation only, or radiation followed by Kang Fu Ling at 0.75, 1.5, or 3 g/kg/day. Microwave radiation lowered heart rate, caused a J point shift on ECG, and produced myocyte swelling, mitochondrial rupture, and reduced mitochondrial membrane potential. Treatment with 1.5 g/kg/day Kang Fu Ling for seven days increased heart rate, reduced the J point shift, restored normal myocyte and mitochondrial structure, increased mitochondrial fluorescence, and reversed the microwave-induced decrease in Cx-43 and VDAC protein expression.
Tök L, Nazıroğlu M, Doğan S, Kahya MC, Tök O. · 2014
Thirty-two rats were randomly assigned to four groups, with one group exposed to Wi-Fi at 2.45 GHz for 60 minutes daily over 30 days and another group receiving melatonin during the same exposure. Lipid peroxidation was slightly higher in the Wi-Fi group than in controls, and glutathione peroxidase activity was significantly lower in the Wi-Fi group. Melatonin supplementation significantly decreased lipid peroxidation and increased both glutathione peroxidase activity and reduced glutathione levels compared with the Wi-Fi group.
Sepehrimanesh M, Kazemipour N, Saeb M, Nazifi S. · 2014
Adult male Sprague-Dawley rats were exposed to 900 MHz EMF radiation for 1, 2, or 4 hours per day for 30 consecutive days. Testes were analyzed using high-resolution 2D electrophoresis and MALDI-TOF/TOF-MS. Thirteen proteins were found only in sham or exposure groups, including heat shock proteins, superoxide dismutase, and peroxiredoxin-1. The results suggest that 30-day EMF exposure induces nonthermal stress in testicular tissue.
Ragy MM. · 2014
Researchers exposed male rats to 900-MHz electromagnetic radiation for one hour daily over 60 days, with a withdrawal group that had a 30-day recovery period. Exposure significantly increased malondialdehyde levels and decreased total antioxidant capacity in brain, liver, and kidney tissues. Serum levels of alanine transaminase, aspartate aminotransferase, urea, creatinine, and corticosterone were significantly increased, while catecholamines were not significantly changed. All these alterations were corrected after the withdrawal period.
