Wang CX et al. · 2019
Researchers exposed participants to Earth-strength magnetic fields while monitoring their brain activity with EEG. They discovered that specific magnetic field rotations caused measurable changes in brain waves (alpha oscillations), but only when the field was oriented as it naturally occurs in the Northern Hemisphere. This suggests humans possess an unconscious magnetic sensing ability similar to migratory animals.
Lundberg L, Sienkiewicz Z, Anthony DC, Broom KA. · 2019
Researchers exposed mice to magnetic fields from power lines during sleep to test effects on their internal body clocks. The magnetic fields caused only minor changes in movement, while light exposure significantly disrupted sleep hormones. Power line magnetic fields don't appear to disrupt circadian rhythms.
Ikeda K, Nakamura K. · 2018
Researchers studied nearly 2,800 Japanese high school students to see if heavy mobile phone use was linked to mood problems. Students using phones more than 33 hours per week showed significantly higher levels of depression, tension, and fatigue compared to lighter users. This suggests that excessive phone use may negatively impact teenagers' mental health.
Kazemi M et al. · 2018
Researchers exposed four male rhesus monkeys to 12 Hz magnetic fields for four hours daily over 30 days. The monkeys showed significantly improved visual working memory and increased brain chemicals linked to learning. This suggests certain EMF frequencies might enhance cognitive function.
Zhang J, Sumich A, Wang GY. · 2017
Researchers reviewed recent brain imaging and brain wave studies to examine whether mobile phone radiation affects brain function. They found that phone radiation appears to increase brain activity and efficiency, particularly in areas near where you hold the phone, and this increased activity was linked to faster reaction times and sleep disruption. The findings suggest the scientific question of mobile phone effects on the brain should be reopened, though the researchers note that long-term effects remain largely unstudied.
Martens AL et al. · 2017
Dutch researchers tracked nearly 15,000 adults over three years to compare actual radiofrequency radiation exposure from cell towers (measured with precise modeling) versus people's perception of their exposure. They found that while actual exposure levels weren't linked to health symptoms, people who believed they were more exposed reported significantly more sleep problems and nonspecific symptoms like headaches and fatigue.
Durusoy R, Hassoy H, Özkurt A, Karababa AO. · 2017
Turkish researchers surveyed 2,150 high school students about their mobile phone use and measured electromagnetic field levels in their schools. Students who used mobile phones were 90% more likely to experience headaches, 78% more likely to report fatigue, and 53% more likely to have sleep problems compared to non-users. The study found clear dose-response relationships, meaning heavier phone use correlated with more frequent symptoms.
Wang K et al. · 2017
Researchers exposed mice to 1.8 GHz radiofrequency radiation (similar to cell phone signals) for 30 minutes and found it actually improved their memory performance on recognition tasks. The radiation changed brain cell structure and electrical activity in memory-related brain regions. However, the exposure level used was much higher than what people typically experience from everyday devices.
Davarpanah Jazi S, Modolo J, Baker C, Villard S, Legros A. · 2017
Researchers exposed 10 healthy volunteers to 60 Hz magnetic fields up to 50 milliTesla (extremely high levels) while measuring brain activity and hand tremor. They found subtle changes in brain wave patterns related to touch sensation, but no effects on motor control or hand tremor. The study provides preliminary evidence that power-frequency magnetic fields can influence specific brain regions even when they don't cause obvious physical symptoms.
Ayoobi F, Shamsizadeh A, Shafiei SA. · 2017
Researchers exposed 65 young adults to magnetic fields similar to power lines for three minutes. Participants showed slower reaction times after exposure compared to fake treatment, while sleepiness levels remained unchanged. This demonstrates that brief magnetic field exposure can impair cognitive performance and brain function.
Wang K et al. · 2017
Scientists exposed mice to cell phone radiation (1.8 GHz) and found it improved memory performance at high exposure levels. The radiation physically changed brain cells and their electrical activity in memory regions, demonstrating that radiofrequency energy can directly alter how the brain functions.
Wang H et al. · 2017
Researchers exposed rats to microwave radiation at 2.856 GHz for six minutes daily over six weeks. Higher exposure levels caused lasting learning and memory problems, abnormal brain waves, and physical brain damage that persisted for months after exposure ended.
Yang L, Chen Q, Lv B, Wu T. · 2016
Researchers exposed people to electromagnetic fields from LTE cell phone technology (4G networks) and measured their brain activity using EEG. They found that LTE exposure reduced brain wave activity in the alpha and beta frequency bands, particularly in areas of the brain responsible for thinking and processing. This suggests that modern wireless technology can measurably alter normal brain function patterns.
Andrianome S et al. · 2016
Researchers compared melatonin levels (a hormone that regulates sleep) between 30 people who report electromagnetic sensitivity and 25 people who don't, without exposing either group to EMF sources. While the sensitive group scored significantly worse on sleep quality questionnaires, both groups had identical melatonin levels in their saliva and urine. This suggests that whatever is causing sleep problems in electromagnetically sensitive individuals, it's not affecting their body's natural melatonin production.
Singh K et al. · 2016
Researchers in India studied 40 people living either near cell phone towers or about 1 kilometer away to see how proximity affected their health and saliva production. They found that people living close to the towers reported significantly more sleep problems, headaches, dizziness, and concentration difficulties, and produced less saliva when stimulated. This suggests that chronic exposure to radiofrequency radiation from cell towers may affect both general health and specific bodily functions like saliva production.
Erdem Koç G et al. · 2016
Turkish researchers exposed pregnant rats to cell phone radiation (900 MHz) for one hour daily throughout pregnancy, then examined brain development in their male offspring. They found that prenatal radiation exposure significantly reduced the number of pyramidal neurons in the hippocampus (a brain region critical for memory and learning). However, when pregnant rats received protective supplements like melatonin or omega-3 fatty acids alongside the radiation exposure, their offspring's brain development remained normal.
Erdem Koç G et al. · 2016
Pregnant rats exposed to cell phone-level radiation (900 MHz) for one hour daily produced offspring with fewer brain cells in the hippocampus, the memory center. However, melatonin and omega-3 supplements during pregnancy prevented this brain damage in the developing babies.
Yang L, Chen Q, Lv B, Wu T · 2016
Chinese researchers exposed people to LTE (4G) cell phone radiation at levels equivalent to maximum phone emissions and measured their brain activity using EEG. The radiation reduced brain wave power and disrupted communication between brain hemispheres in the alpha and beta frequency bands, which are associated with relaxed awareness and focused attention. These changes occurred in the frontal and temporal brain regions that handle executive function and memory processing.
Erdem Koç G et al. · 2016
Pregnant rats exposed to cell phone radiation (900 MHz) for one hour daily had offspring with fewer brain cells in the hippocampus, the memory center. Melatonin and omega-3 supplements during pregnancy prevented this brain damage, suggesting potential protective strategies for human prenatal development.
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.
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.
Singh S, Mani KV, Kapoor N. · 2015
Researchers studied 155 military personnel exposed to radar frequencies of 8-12 GHz and 12.5-18 GHz to measure how electromagnetic fields affect melatonin (the sleep hormone) and serotonin (a mood chemical) in their blood. Workers exposed to the higher frequency range (12.5-18 GHz) showed significantly lower melatonin levels and higher serotonin levels, especially those with more than 10 years of exposure. This suggests that long-term exposure to certain radar frequencies can disrupt the body's natural hormone balance.
Ghosn R et al. · 2015
Researchers exposed 26 healthy young adults to radiofrequency signals from a mobile phone while measuring their brain activity using EEG (electroencephalogram). They found that RF exposure significantly reduced alpha brain waves (8-12 Hz), which are associated with relaxed, alert states, and this effect persisted even after the exposure ended. The study carefully controlled for other factors like stress hormones and caffeine that could influence brain activity.
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.
