Unknown authors · 2015
Researchers exposed mouse spermatocyte-derived GC-2 cells to 50 Hz ELF-EMF at 1, 2, and 3 mT intermittently for 72 hours. Genome-wide methylation decreased at 1 mT but was higher at 3 mT compared to controls. DNMT1 and DNMT3b expression decreased at 1 mT and increased at 3 mT, while DNMT3a expression was largely unaffected. The researchers also established DNA methylation and gene expression profiling and validated some genes with aberrant methylation and expression at different intensities.
Liu X et al. · 2015
Researchers studied the effects of ELF-EMF exposure on Alzheimer's disease development in rats. The rats were exposed to ELF-EMF at 50 Hz and 400 µT for 60 days. ELF-EMF exposure delayed the weight gain of rats and partially improved cognitive and clinicopathologic symptoms. The researchers concluded that certain conditions of ELF-EMF exposure could delay the development of AD in rats.
Saygin M, Asci H, Ozmen O, Cankara FN, Dincoglu D, Ilhan I. · 2015
Six-week-old male Sprague Dawley rats were divided into four groups, including a sham group, an EMR-only group exposed to 2.45 GHz radiation for 3 hours per day for 30 days, an EMR plus gallic acid group, and a gallic acid-only group. EMR exposure increased malondialdehyde and total oxidant status levels, decreased total antioxidant status, and raised prostaglandin E2 and calcitonin gene-related peptide staining in testicular tubules. Gallic acid treatment lowered total oxidant status and oxidative stress index and raised total antioxidant status. It also reduced prostaglandin E2 and calcitonin gene-related peptide staining and increased testosterone and VEGF levels relative to the EMR-only group.
Saygin M, Asci H, Ozmen O, Cankara FN, Dincoglu D, Ilhan I · 2015
Researchers exposed young male rats to 2.45 GHz microwave radiation (the same frequency as WiFi and Bluetooth) for 3 hours daily over 30 days and found significant damage to testicular tissue and sperm production. The radiation increased oxidative stress markers and inflammatory proteins while reducing sperm counts in the testes. However, when rats were given gallic acid (an antioxidant found in tea and berries), it largely prevented these reproductive damages.
Unknown authors · 2015
Researchers exposed pregnant rats and their newborns to 2.45 GHz electromagnetic radiation for 1 h per day, 5 days a week, from pregnancy to 3 weeks of age. Lipid peroxidation increased in both brain and liver, while glutathione peroxidase activity and vitamins A, E, and β-carotene decreased in both organs. Glutathione and vitamin C concentrations fell in the brain but not in the liver, and the brain appeared more sensitive to oxidative injury than the liver.
Unknown authors · 2015
Researchers exposed HaCaT human keratinocytes to ELF-EMF at 50 Hz and 1 mT and monitored cell cycle, growth, and viability using FACS and BrdU assays. They also measured gene expression changes with microarray and qRT-PCR, and assessed mTOR, Akt, and MAPK protein levels by Western blot. Short ELF-EMF exposure modulated gene expression patterns involved in cell proliferation and the cell cycle, with mTOR activation identified as the main molecular target. The data showed increased PI3K/Akt pathway activity and ERK signaling activation. ELF-EMF selectively modulated multiple genes related to biological processes such as wound healing.
Zhang Y, Liu X, Zhang J, Li N. · 2015
Researchers exposed rats to extremely low frequency electromagnetic fields (the type emitted by power lines and electrical devices) for 12 weeks to see if it would affect memory and brain health, particularly markers associated with Alzheimer's disease. They found no changes in the rats' memory performance, brain tissue structure, or levels of amyloid-beta proteins that are linked to Alzheimer's. This suggests that short-term exposure to these fields at the levels tested did not harm cognitive function in this animal model.
Gryz K et al · 2015
Researchers modeled personal exposimeters measuring electric fields from 98–2450 MHz using a human body model and finite integration technique software. Calculations with 256 exposure scenarios showed the human body causes measurement errors from −96% to +133% compared to unperturbed fields. Placing a single exposimeter on the waist to the back side of the human body or on the front of the chest reduces the range of exposure assessment uncertainty across various conditions. Uncertainty using a single exposimeter remains significantly higher than spot measurements of unperturbed fields.
Tomitsch J, Dechant E et al · 2015
In revisited households, median ELF electric fields decreased from 23.20 V/m in 2006 to 13.90 V/m in 2012, median all-night ELF magnetic fields at 50 Hz decreased from 13.50 to 11.37 nT, and median total RF-EMFs increased from 28.13 to 52.16 µW/m². The highest RF-EMF increases were for UMTS and WLAN, urban areas had higher median total RF-EMFs (117.73 µW/m²) than rural areas (34.52 µW/m²), and LTE at 2600 MHz was detected at 17 locations up to 38.20 µW/m². Indoor sources showed decreased exposure in the DECT frequency range and increased exposure in the WLAN frequency range.
Gryz K et al · 2015
Researchers tested how the human body affects personal EMF meters that measure radiofrequency radiation from 98-2450 MHz. They found that where you wear the device on your body dramatically changes the readings, with errors ranging from -96% to +133% compared to actual field strength. This means current EMF exposure assessments using body-worn devices may be significantly inaccurate.
Tomitsch J, Dechant E et al · 2015
Austrian researchers measured EMF levels in 219 bedrooms from 2006 to 2012, tracking changes in power line fields and wireless radiation. They found power line electric fields decreased by 40% while total wireless radiation nearly doubled, with urban areas showing 3.4 times higher wireless exposure than rural locations. The study reveals how our bedroom EMF environment has shifted dramatically toward wireless sources.
Gryz K et al · 2015
Researchers used computer models to test how the human body affects radiofrequency measurements from personal EMF meters worn at different body locations. They found measurement errors ranging from -96% to +133% compared to actual field strength, with waist and chest positions providing the most reliable readings.
Tomitsch J, Dechant E et al · 2015
Austrian researchers measured electromagnetic field levels in 219 bedrooms from 2006 to 2012, tracking changes in household EMF exposure over time. They found that power line frequency fields decreased slightly, but wireless radiation (RF-EMF) nearly doubled, with urban areas showing 3.4 times higher wireless exposure than rural areas. This study documents the rapid increase in wireless radiation exposure as smartphones and WiFi became widespread.
Tomitsch J, Dechant E et al · 2015
Austrian researchers measured electromagnetic field levels in 219 bedrooms from 2006 to 2012, tracking how household EMF exposure changed over time. They found that while power line frequencies decreased slightly, radiofrequency radiation from wireless devices nearly doubled. The study reveals how our bedroom EMF environment has shifted as we've adopted more wireless technology.
Manzella N et al · 2015
Researchers investigated effects of ELF magnetic fields on circadian clock genes in a human fibroblast cell line. An ELF-MF exposure at 0.1 mT and 50 Hz entrained expression of clock genes BMAL1, PER2, PER3, CRY1, and CRY2. ELF-MF treatment also altered circadian clock gene expression previously entrained by serum shock stimulation.
Unknown authors · 2015
Researchers exposed human skin cells to extremely low frequency magnetic fields (50 Hz, 0.1 mT) and found these fields could reset the cells' internal biological clocks by altering the expression of key circadian genes. The magnetic field exposure changed the timing of five different clock genes, including BMAL1, PER2, PER3, CRY1, and CRY2. This suggests that EMF exposure from power lines and electrical devices might disrupt our natural daily rhythms at the cellular level.
Calvente I et al. · 2015
Researchers used spot measurements to characterize outdoor radiofrequency electromagnetic fields in the frequency range 100kHz-6GHz around the dwellings of 123 families from the INMA-Granada birth cohort in Southern Spain. The arithmetic mean electric field was 195.79mV/m and the mean power density was 799.01µW/m(2), with median values of 148.80mV/m and 285.94µW/m(2) respectively. All recorded values were well below International Commission for Non-Ionizing Radiation Protection reference levels. Exposure levels varied widely among different areas or towns/villages and also among seasons.
Saili L et al. · 2015
Researchers studied electrocardiogram and arterial pressure measurements in adult male rabbits during acute one-hour exposure to 2.45 GHz WIFI signals. Acute WIFI exposure increased heart frequency by 22% and arterial blood pressure by 14%. ECG analysis showed a combined increase in PR and QT intervals, while maximum amplitude and P waves were unchanged. Under WIFI exposure, dopamine and epinephrine injections had altered effects on heart variability and blood pressure compared to controls.
Unknown authors · 2015
Researchers exposed pregnant mice to a 50 Hz, 500 mG field for one week (12 hours per day) and continued exposure of their offspring for up to 15.5 months, while control mice were not exposed. Mean body weights of exposed male and female mice were significantly decreased compared with controls. Exposed mice showed no increased incidence of liver and lung tumors. In female mice, the incidence of chronic myeloid leukemia was significantly greater in the exposed group (3 of 42, 7%) than in controls. The size of seminiferous tubules in exposed males was significantly smaller than in controls.
Sangun O, Dundar B, Darici H, Comlekci S, Doguc DK, Celik S · 2015
Researchers exposed female Wistar rats to a 2450 MHz electromagnetic field for one hour per day starting either prenatally or postnatally, with a sham-exposed control group. Prenatal exposure led to significantly lower daily mass gain and significantly later puberty. Brain and ovary total oxidant status and oxidative stress index were significantly increased in the prenatal group compared to the control group. Serum LH levels were increased in both prenatal and postnatal groups, while FSH and E2 did not differ among groups. Histological examinations showed no statistically significant differences between groups.
Sangün Ö, Dündar B, Çömlekçi S, Büyükgebiz A · 2015
They noted children are exposed to non-ionizing radiation involuntarily from very early ages. The review highlighted concerns about thyroid function, adrenal hormones, glucose homeostasis, and melatonin levels. Studies are usually performed on virtual models or animals due to ethical issues. International guidelines did not report definite causality but studies indicate increased risks of cancer, hematologic effects, and cognitive impairment.
Unknown authors · 2015
Researchers exposed rats to 2100 MHz radiofrequency radiation (3G cell phone frequency) for either 10 or 40 days and examined their parotid salivary glands. The study found significant tissue damage in exposed rats, with more severe damage occurring after longer exposure periods. This suggests that the radiation frequency used by 3G phones can harm salivary gland tissue.
Unknown authors · 2015
Researchers used a quasi-experimental design with two pretests before and two posttests after a new high-voltage power line began operation. Residents living within 300 meters, 300-500 meters, and 500-2000 meters of the line participated. Symptom reports and causal beliefs increased significantly more in the closest group compared to those farther away. At baseline, symptom reports were similar across groups, but belief that power lines cause symptoms was already stronger among nearby residents.
Unknown authors · 2015
Turkish researchers exposed rats to 2100 MHz radiofrequency radiation (3G mobile phone frequency) for 6 hours daily over 10 or 40 days and examined their parotid salivary glands. The study found significant tissue damage in exposed animals, including changes to gland cells, blood vessels, and cellular structure, with more severe damage after longer exposure periods.
Legros A, Modolo J, Brown S, Roberston J, Thomas AW. · 2015
Researchers used functional MRI to look for changes in brain activation in human participants following exposure to a 60 Hz magnetic field. The study found significant changes in task-induced functional brain activation as a consequence of magnetic field exposure, but no impact on task performance. The researchers discussed the possibility that exposure at 60 Hz, 3000 μT may be capable of modulating cortical excitability via a modulation of synaptic plasticity processes.
