Fasseas MK et al. · 2015
Greek researchers exposed microscopic worms (C. elegans) to radiation from cell phones, WiFi routers, and cordless phones at levels below international safety guidelines. They found no effects on the worms' lifespan, fertility, growth, memory, or cellular damage markers. The study suggests these worms are resilient to wireless device radiation under the tested conditions.
Trunk A et al. · 2015
Researchers exposed 25 people to UMTS mobile phone radiation (similar to 3G signals) for 15 minutes while they performed visual tasks, with some participants also given caffeine. While caffeine improved reaction times and brain arousal as expected, the mobile phone radiation had no detectable effects on brain activity or cognitive performance, either alone or when combined with caffeine.
Sauter C et al. · 2015
German researchers exposed 30 healthy young men to TETRA radio signals (used by emergency services) for 2.5 hours at two different power levels to test effects on thinking abilities and well-being. They found no negative impacts on cognitive performance, mood, or physical complaints, with some measures actually showing slight improvement during exposure. This suggests short-term exposure to TETRA signals at these levels doesn't impair mental function in healthy adults.
Nazıroğlu M, Ozkan FF, Hapil SR, Ghazizadeh V, Ciğ B · 2015
Researchers exposed brain cells from epileptic rats to 900 MHz mobile phone radiation for one hour to see if it worsened seizure-related brain damage. The epilepsy itself caused significant cell death, oxidative stress, and calcium influx in the hippocampus (a brain region crucial for memory), but the mobile phone radiation didn't add any additional harmful effects. This suggests that in already-damaged brain tissue, 900 MHz EMF exposure may not worsen the cellular damage beyond what the disease itself causes.
Malek F, Rani KA, Rahim HA, Omar MH · 2015
Malaysian researchers exposed 200 people (half claiming electromagnetic sensitivity) to cell tower signals at 1 volt per meter for short periods and measured cognitive performance, body temperature, heart rate, and blood pressure. They found no statistically significant differences between real exposure and fake exposure in either sensitive or non-sensitive individuals. This suggests that brief exposure to typical cell tower radiation levels doesn't immediately affect these basic body functions or mental performance.
Gupta N, Goyal D, Sharma R, Arora KS · 2015
Researchers examined whether long-term mobile phone use affects the auditory brainstem - the part of the brain that processes sound signals from your ears. They compared brain wave responses in 67 people who had used GSM mobile phones for over a year against 33 non-users. The study found no significant differences in how sound signals traveled through the auditory nerve to the brainstem between phone users and non-users.
Zheng F et al. · 2015
Researchers surveyed 746 children in China about their mobile phone use and health symptoms. They found that children who used phones for more years or made longer daily calls were significantly more likely to report fatigue, with those making longer calls nearly three times more likely to experience fatigue. The connection between phone use and fatigue remained strong even after accounting for other factors that might explain the symptoms.
Sırav B, Seyhan N · 2015
Researchers exposed male and female rats to cell phone radiation at 900MHz and 1800MHz frequencies for 20 minutes, then measured whether their blood-brain barrier (the protective shield around the brain) became more permeable. They found that both frequencies increased brain permeability in males, with 1800MHz having a stronger effect, while only 900MHz affected females. This suggests that even brief cell phone exposure can compromise the brain's natural protective barrier.
Schoeni A, Roser K, Röösli M. · 2015
Swiss researchers followed 439 adolescents for one year, testing their memory performance while tracking their cell phone use. They found that teens who used their phones more for voice calls showed declining figural memory (the ability to remember shapes and visual patterns) over the year. Importantly, activities that produce minimal radiation like texting and gaming showed no memory effects, suggesting the radiation itself - not just phone use habits - may be impacting developing brains.
Şahin A et al. · 2015
Researchers exposed young rats (equivalent to pre-adolescent humans) to 900-MHz cell phone radiation for one hour daily over 30 days, then examined their brain tissue. They found significant loss of pyramidal neurons in the hippocampus (a brain region crucial for memory and learning) and observed damaged cells with abnormal appearance. This suggests that cell phone radiation exposure during development may harm critical brain cells needed for cognitive function.
Ragy MM · 2015
Researchers exposed rats to 900-MHz electromagnetic radiation (similar to cell phone frequencies) for one hour daily over 60 days and found significant damage to the brain, liver, and kidneys. The exposure increased harmful oxidative stress markers and damaged tissue function, but these effects reversed when the EMF exposure was stopped for 30 days. This suggests that cell phone radiation may cause measurable biological damage that could potentially be reversed with reduced exposure.
Nazıroğlu M, Özkan FF, Hapil SR, Ghazizadeh V, Çiğ B · 2015
Turkish researchers exposed brain cells from epileptic rats to 900 MHz mobile phone radiation for one hour to see if it would worsen brain damage. They found that epilepsy itself caused significant cell death and oxidative stress in the hippocampus (the brain's memory center), but adding mobile phone radiation didn't make these effects any worse. This suggests that in already-damaged brain tissue, short-term mobile phone exposure may not add additional harm beyond what the underlying condition already causes.
Hossain MI, Faruque MRI, Islam MT. · 2015
Researchers used computer modeling to study how distance and angle between a cell phone and user's head affects SAR (specific absorption rate), which measures how much radiofrequency energy the head absorbs. They found that keeping the phone farther from your head significantly reduces SAR values, but changing the angle doesn't consistently help. This research provides practical guidance for reducing your exposure to cell phone radiation during calls.
Geronikolou SA et al. · 2015
Researchers studied how children's stress hormone systems respond to cell phone calls after experiencing mental stress. They found that children who regularly use cell phones had different cortisol (stress hormone) patterns compared to occasional users when making a 5-minute phone call after a stressful task. This suggests that frequent cell phone use may alter how young people's bodies handle stress.
Exelmans L, Van den Bulck J. · 2015
Researchers surveyed 844 adults in Belgium about their mobile phone use at bedtime and sleep quality. They found that people who sent texts or made calls after turning off the lights had worse sleep quality, took longer to fall asleep, and experienced more daytime fatigue. The effects were strongest in younger adults, while older adults showed different patterns including earlier wake times and shorter sleep duration.
Danker-Hopfe H et al. · 2015
German researchers exposed 30 young men to cell phone radiation from GSM 900MHz and WCDMA/UMTS devices while monitoring their sleep with medical-grade equipment. They found that 90% of participants showed measurable changes in their sleep patterns, with the most consistent effect being increased REM sleep in about one-third of the subjects. The study suggests that cell phone radiation can affect individual sleep quality, though the changes varied greatly between people.
Carlberg M, Hardell L. · 2015
Swedish researchers analyzed 1,625 meningioma (brain tumor) cases and 3,530 healthy controls to examine whether mobile and cordless phone use increases tumor risk. They found no overall increased risk, but heavy users who talked for more than 1,436 hours showed a 20% increased risk for mobile phones and 70% increased risk for cordless phones. The heaviest users (over 3,358 hours) had double the risk from cordless phones, suggesting prolonged exposure may contribute to these slow-growing brain tumors.
Shehu A, Mohammed A, Magaji RA, Muhammad MS. · 2015
Researchers exposed rats to mobile phone radiation, ringtones, and vibrations for 10 minutes daily over 4 weeks to study effects on anxiety and brain chemistry. All exposed groups showed increased anxiety-like behavior, while rats exposed to ringtones or combined ringtone/vibration also had reduced levels of catalase, an important antioxidant enzyme in the brain. This suggests that mobile phone emissions may affect both behavior and the brain's ability to protect itself from cellular damage.
İkinci A et al. · 2015
Researchers exposed young male rats to 900 MHz radiofrequency radiation (similar to cell phone frequencies) for one hour daily during adolescence and examined their spinal cords. They found significant damage including breakdown of the protective myelin sheaths around nerve fibers, increased oxidative stress markers, and structural abnormalities in nerve cells. This suggests that radiofrequency exposure during critical developmental periods may harm the developing nervous system.
Schoeni A, Roser K, Röösli M · 2015
Swiss researchers followed 439 adolescents for one year to see if cell phone radiation affects memory. They found that teens with higher exposure to radiofrequency electromagnetic fields from mobile phones showed measurably worse performance on figural memory tests (the ability to remember visual patterns and shapes). The effect was stronger when researchers calculated actual radiation dose to the brain rather than just looking at call time.
Özgür A et al. · 2015
Researchers exposed rats to mobile phone electromagnetic waves for 30 days and examined their auditory systems. The exposed rats showed significant neuronal damage in the brain regions that process hearing, including cell death and tissue swelling. While hearing function tests appeared normal, the microscopic damage suggests that chronic EMF exposure may harm the auditory processing centers in the brain.
Tang J et al. · 2015
Researchers exposed rats to cell phone radiation (900 MHz) for 28 days and found it damaged the blood-brain barrier and impaired memory. The radiation caused brain cells to swell and allowed harmful substances to leak into brain tissue, providing direct evidence of cognitive damage.
Roggeveen S, van Os J, Viechtbauer W, Lousberg R. · 2015
Researchers exposed 31 healthy women to 3G cell phone radiation for 15 minutes and measured their brain wave activity using EEG. They found significant changes in multiple brain wave patterns (alpha, beta, and gamma waves) when the phone was held at the ear, but no changes when placed on the chest. This demonstrates that cell phone radiation can directly alter brain electrical activity in a location-specific way.
Roggeveen S, van Os J, Lousberg R. · 2015
Researchers used EEG brain scans to monitor 31 women while they held active versus inactive 3G phones near their ears for 15 minutes. When the phone was actively transmitting radiation near the ear, their brains showed measurable electrical responses that occurred unconsciously within milliseconds of each radiation pulse. This demonstrates that human brains can detect and respond to cell phone radiation even when people aren't aware of the exposure.
Furtado-Filho OV et al. · 2015
Brazilian researchers exposed pregnant rats and their newborns to cell phone frequency radiation (950 MHz) for 30 minutes daily throughout pregnancy and after birth. They found that 6-day-old exposed rats showed protein damage specifically in the right side of their brain, plus lower blood sugar levels. Newborn rats showed no effects, suggesting developing brains become more vulnerable to EMF damage as they mature.
