Browse 8,700 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 829 studies (Cell Studies)
Marjanovic Cermak AM et al. · 2017
Scientists exposed cells to 1800 MHz radiation from cell phones for 10-60 minutes at typical usage levels. Even brief exposures triggered oxidative stress, where harmful molecules called free radicals increased faster than cells could neutralize them, indicating cellular damage pathways activated by phone radiation.
Zeng Y, Shen Y, Hong L, Chen Y, Shi X, Zeng Q, Yu P · 2017
Researchers exposed brain cells from the hippocampus (a memory center) to 50-Hz magnetic fields at 2 milliTesla for 8 hours daily and measured various biological effects. They found that repeated exposure reduced cell survival and increased harmful reactive oxygen species, but did not cause DNA damage or cell death. The study suggests that while these magnetic fields create cellular stress, they may not cause severe biological damage.
Pooam M, Nakayama M, Nishigaki C, Miyata H · 2017
Scientists exposed immune cells to 50 Hz magnetic fields from power lines at levels found near electrical devices. The magnetic fields damaged cellular energy centers, increased harmful free radicals, and triggered stress responses. This suggests everyday magnetic field exposure may stress our immune systems.
Naarala J et al. · 2017
Scientists exposed human blood vessel cells and rat brain cells to combinations of Earth's magnetic field and power line magnetic fields. They found that horizontal power line fields caused different cellular effects than vertical ones. This suggests power line magnetic fields may interact with Earth's natural field to influence cell behavior.
Medina-Fernandez FJ et al. · 2017
Researchers exposed rats with multiple sclerosis-like symptoms to magnetic field stimulation (0.7 mT at 60 Hz) for 2 hours daily over 3 weeks. The magnetic field treatment significantly reduced brain and spinal cord damage, improved motor symptoms, and decreased harmful oxidative stress while boosting protective antioxidant systems. This suggests that certain types of electromagnetic field exposure may actually have therapeutic benefits for neurological conditions.
Kim SJ et al. · 2017
Researchers exposed immune cells called macrophages to 60 Hz magnetic fields at 0.8 mT (similar to power line frequencies) and found the fields significantly increased inflammatory responses. The EMF exposure boosted production of inflammatory molecules like nitric oxide and cytokines, while also reducing the effectiveness of antioxidants that normally help control inflammation. This suggests that everyday electromagnetic field exposure might make our immune cells more prone to chronic inflammation.
Cichoń N, Bijak M, Miller E, Saluk J. · 2017
Researchers studied 57 stroke patients who received either standard rehabilitation alone or rehabilitation plus daily exposure to extremely low frequency magnetic fields (40 Hz) for four weeks. Patients exposed to the magnetic fields showed improved antioxidant enzyme activity in their blood and better functional recovery, including enhanced daily living skills and reduced depression scores compared to the control group.
Unknown authors · 2016
Researchers exposed human teeth with mercury amalgam fillings to Wi-Fi signals at 2.4 GHz for 20 minutes and measured mercury release into artificial saliva. The Wi-Fi exposed teeth released more than double the mercury compared to unexposed teeth (0.056 vs 0.026 mg/L). This suggests that common Wi-Fi radiation may increase mercury exposure from dental fillings.
Unknown authors · 2016
Korean researchers exposed human bone marrow stem cells to pulsed electromagnetic fields (PEMF) and found the treatment promoted both cell survival and conversion into nerve-like cells. The PEMF exposure activated specific cellular pathways that protected cells from death while encouraging them to develop neural characteristics. This suggests PEMF might have therapeutic potential for neurological conditions.
Unknown authors · 2016
Dutch researchers exposed rat brain cell cultures to common insecticides and methylmercury for 14 days, measuring changes in neuronal activity using electrode arrays. They found that chronic low-level exposure to several compounds significantly altered brain cell firing patterns, with some chemicals requiring 10 times lower concentrations to cause effects during long-term exposure compared to short-term exposure. This demonstrates that traditional acute toxicity testing may miss important neurological effects that only emerge with prolonged exposure.
Unknown authors · 2016
Researchers exposed human eye lens cells to 50 Hz magnetic fields at 0.4 mT (400 times stronger than typical household exposure) for up to 48 hours. Multiple DNA damage tests showed no harmful effects. This suggests power line frequency magnetic fields may not directly damage eye cells that could lead to cataracts.
Unknown authors · 2016
Researchers tested whether static magnetic fields from dental magnetic attachments damage human gum cells in laboratory cultures. They found that stronger magnets (particularly double magnet configurations) caused genetic damage to gum cells, as measured by increased micronucleus formation. The study suggests that the magnetic fields commonly used in dental prosthetics may pose genetic risks to surrounding gum tissue.
Unknown authors · 2016
Researchers exposed hair follicle cells to 50 Hz electromagnetic fields (the same frequency as power lines) at 1 milliTesla for up to 14 days. The EMF exposure increased expression of genes associated with neural development, particularly MAP2, suggesting the fields influenced cell differentiation toward nerve-like characteristics.
Unknown authors · 2016
Researchers exposed human breast cancer cells to 50 Hz electromagnetic fields using different timing patterns and measured changes in antioxidant gene activity. They found that intermittent exposure (5 minutes on, 5 minutes off) altered the expression of protective genes NQO1 and NQO2. This suggests that the timing pattern of EMF exposure, not just intensity, may influence cellular responses.
Unknown authors · 2016
Researchers exposed mouse brain cells to radiofrequency radiation while treating them with amyloid-beta proteins that cause Alzheimer's-like damage. The RF exposure had no significant effect on the toxic processes - it didn't protect the cells from damage, but it also didn't make the damage worse. This suggests RF radiation neither helps nor harms brain cells already under Alzheimer's-related stress.
Unknown authors · 2016
French researchers exposed human skin cells to 60.4 GHz millimeter waves (the frequency range planned for 5G networks) for 3 hours and found no immediate gene expression changes. However, when cells were simultaneously stressed with a metabolism-blocking chemical, the millimeter wave exposure altered the expression of 6 genes involved in cellular stress responses and immune signaling.
Koyama S et al. · 2016
Japanese researchers exposed human eye cells (corneal and lens epithelial cells) to 60 GHz millimeter-wave radiation for 24 hours at 1 mW/cm2 power levels. The study found no genetic damage, DNA breaks, or stress protein changes compared to unexposed control cells. This suggests 60 GHz radiation at these levels doesn't cause immediate cellular harm to eye tissue.
Koyama S et al. · 2016
Researchers exposed human eye cells to terahertz radiation (0.12 THz frequency) for 24 hours to test for cellular damage. The study found no DNA damage, cell structure changes, or stress protein production compared to unexposed control cells. This suggests terahertz frequencies at this power level may not cause immediate cellular harm.
Nakayama M, Nakamura A, Hondou T, Miyata H · 2016
Researchers exposed immune cells called macrophages to 50-Hz magnetic fields (the same frequency as power lines) for 24 hours to see if it would damage their DNA. They found that magnetic field exposure alone caused no harm, but when cells were first activated by bacterial toxins, the magnetic field exposure increased DNA damage and reduced cell survival.
Medeiros LN, Sanchez TG. · 2016
Brazilian researchers reviewed 165 studies to examine whether cell phone radiation might cause or worsen tinnitus (ringing in the ears). They found that radiofrequency radiation from phones can penetrate ear tissues and cause biological effects, with some people being more sensitive to electromagnetic exposure. The review concluded there's reasonable evidence to suggest caution when using mobile phones to prevent hearing damage and tinnitus.
Siqueira EC et al. · 2016
Researchers analyzed saliva from the parotid glands (located near the jaw) in 83 people who regularly use cell phones, comparing the side exposed to phone radiation with the unexposed side. They found that the exposed side showed signs of inflammation, with decreased levels of an anti-inflammatory protein and increased levels of a pro-inflammatory protein. The inflammatory changes were more pronounced in people who had used cell phones for over 10 years, suggesting cumulative effects from long-term exposure.
Sagioglou NE et al. · 2016
Greek researchers exposed fruit flies to radiofrequency radiation at various frequencies (100-900 MHz) and found that all exposure protocols increased cell death in developing eggs, even at very low power levels. The study revealed that frequency-modulated signals caused more damage than continuous waves, and that biological effects don't follow a simple dose-response relationship. This research demonstrates that even brief exposures to RF radiation can disrupt normal cellular processes in developing organisms.
Grell K et al. · 2016
Researchers analyzed 792 brain tumor patients from 13 countries to see if gliomas (a type of brain cancer) occurred more often on the side of the head where people held their cell phones. They found a statistically significant pattern: brain tumors were more likely to develop on the same side of the head where patients reported using their phones most frequently. This spatial relationship held true regardless of how much time people spent on calls, suggesting that location of exposure may be more important than duration.
Houston BJ, Nixon B, King BV, De Iuliis GN, Aitken RJ. · 2016
Researchers analyzed 27 studies examining how radiofrequency radiation (the type emitted by cell phones and wireless devices) affects male fertility. They found that 21 of the 27 studies showed harmful effects, with sperm swimming ability declining, DNA damage increasing, and cells producing more harmful reactive oxygen species. The evidence suggests RF radiation damages the cellular powerhouses (mitochondria) in sperm, leading to oxidative stress that impairs male reproductive health.
Kunt H et al. · 2016
Researchers studied electrical workers exposed to electromagnetic fields from high-voltage power lines and compared their health markers to unexposed workers. They found that electrical workers had lower bone density, disrupted thyroid function, and higher oxidative stress (cellular damage from harmful molecules). This suggests that long-term occupational EMF exposure may weaken bones and disrupt hormone production.