Narayanan SN, Kumar RS, Karun KM, Nayak SB, Bhat PG. · 2015
Researchers exposed young rats to 900 MHz radiofrequency radiation (similar to cell phone frequencies) for one hour daily over four weeks and tested their learning and memory abilities. The exposed rats showed decreased learning abilities and poorer memory retention, especially when tested 48 hours after training. Brain tissue examination revealed structural damage to the hippocampus, the brain region critical for memory and spatial navigation.
Kazemi E et al. · 2015
Researchers exposed blood immune cells from 13 healthy volunteers to 900 MHz cell phone radiation for 2 hours and measured cellular damage. They found significant increases in harmful reactive oxygen species (cellular stress markers) in monocytes, a type of immune cell, but not in lymphocytes. This suggests cell phone radiation can trigger oxidative stress in certain immune system cells.
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.
Halgamuge MN et al · 2015
Researchers exposed soybean seedlings to 900 MHz cell phone radiation at different power levels and found reduced plant growth in multiple experiments. Higher intensity radiation (like from phones during calls) reduced stem growth, while even extremely low levels (like from cell towers) affected both stems and roots after longer exposure periods.
Malka N. Halgamuge, See Kye Yak and Jacob L. Eberhardt · 2015
Soybean seedlings pre-grown for 4 days were exposed for 2 h to GSM 900 MHz pulsed radiation or continuous wave radiation at amplitudes of 5.7 and 41 V m(-1) in a gigahertz transverse electromagnetic cell. Exposure to higher amplitude (41 V m(-1)) GSM radiation resulted in diminished outgrowth of the epicotyl. Exposure to lower amplitude (5.7 V m(-1)) GSM radiation did not influence outgrowth of epicotyl, hypocotyls, or roots. Higher amplitude CW radiation reduced root outgrowth while lower CW exposure reduced hypocotyl outgrowth. A separate 5-day exposure to 0.56 V m(-1) GSM radiation reduced epicotyl and hypocotyl growth but stimulated root outgrowth.
Megha K et al. · 2015
Researchers exposed rats to cell phone radiation for 30 days and found significant decreases in brain chemicals like dopamine and serotonin that control mood and memory. This suggests wireless device radiation could potentially disrupt how brain cells communicate with each other.
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.
Şahin A et al. · 2015
Turkish researchers exposed 8-week-old rats (equivalent to preadolescent humans) to 900 MHz cell phone radiation for one hour daily over 30 days. The exposed rats showed significant loss of pyramidal neurons in the hippocampus, a brain region critical for memory and learning, along with visible cellular damage and enlarged brain ventricles.
Grémiaux A et al. · 2015
Researchers exposed small rose bush plants to high-frequency electromagnetic fields and followed shoot growth for over a one-month period after exposure. Shoots that arose from post-formed secondary buds showed delayed and significantly reduced growth of 45%, while shoots from pre-formed buds and plants exposed at the 5-leaf stage showed no growth modification. The measured plant energy uptake suggested this biological response was likely not due to a thermal effect.
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.
Kumar A, Singh HP, Batish DR, Kaur S, Kohli RK. · 2015
After 7 days, exposure for 4 h caused significant growth and biochemical alterations. Root and coleoptile length were reduced, with coleoptile length showing a 23 % reduction after 4 h exposure. Photosynthetic pigments and total carbohydrates declined by 13 and 18 %, while α- and β-amylase activities increased by ∼92 and 94 % after 4 h exposure. Acid invertase and alkaline invertase activities increased by 88 and 266 %, whereas phosphatase activities rose up to 2 h then declined after longer exposure.
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.
Lustenberger et al. · 2015
The study investigated how much variation exists between individuals and within the same individual in response to pulsed radiofrequency electromagnetic field exposure during sleep. The EEG analysis showed exposure-related increases in the delta-theta frequency range at several fronto-central electrodes, but no differences in the spindle frequency range. Reproducible within-subject effects on sleep spindle and delta-theta activity were not observed, and it remained unclear whether a biological trait of how subjects' brains react to RF EMF exists.
Lustenberger et al. · 2015
Swiss researchers exposed 20 young men to cell phone-level radiation (900 MHz at 2 watts per kilogram) for 30 minutes before sleep on two separate nights, then monitored their brain activity throughout the night using EEG. While they found some increases in certain brain wave patterns during deep sleep, these effects were inconsistent - they didn't reliably occur in the same individuals across both exposure sessions. This suggests that if cell phone radiation affects sleep brain activity, the response varies unpredictably between people and even within the same person on different nights.
Aerts S et al · 2015
Researchers measured radio frequency radiation exposure from mobile phones on trains, comparing connections to distant cell towers versus small cells installed inside train cars. They found that using in-train small cells reduced brain exposure by 35 times and whole-body exposure by 11 times compared to connecting to distant outdoor towers. This dramatic reduction occurs because phones don't need to transmit as much power when connecting to nearby small cells.
