Electric fields are produced by voltage (electrical pressure) and exist whenever a device is plugged in, even if turned off. They are measured in volts per meter (V/m). Electric fields can be blocked by walls and most materials, but often concentrate near ungrounded wiring and electronics.
Based on Building Biology Institute guidelines (V/m (volts per meter)):
Showing 294 studies with measured electric fields exposure
Dragicevic N et al. · 2011
Researchers exposed mice to 918 MHz electromagnetic fields daily for one month. The treatment dramatically boosted brain cell energy production by 50-150% in Alzheimer's mice and improved function in normal mice, suggesting EMFs might protect against cognitive decline.
Gurbuz N, Sirav B, Kuzay D, Ozer C, Seyhan N. · 2015
Researchers exposed diabetic rats to cell phone radiation (2100 MHz) to see if it caused genetic damage in bladder cells by looking for micronuclei - small fragments of broken DNA that indicate cellular damage. They found no increase in genetic damage in either healthy or diabetic rats exposed to the radiation compared to unexposed animals. The study suggests that this level of RF radiation may not cause DNA damage in bladder cells, even in animals with diabetes who might be more vulnerable.
Balcer-Kubiczek EK, Harrison GH. · 1991
Researchers exposed mouse cells to microwave radiation (same frequency as WiFi) plus a tumor-promoting chemical. While microwaves alone caused no harm, the combination significantly increased cancer-like cell transformation to levels matching X-ray exposure, suggesting microwaves may promote cancer under certain conditions.
Sokolovic D et al. · 2008
Researchers exposed rats to cell phone radiation for 60 days and found it damaged brain cells through oxidative stress (harmful free radicals). Melatonin, a natural hormone, partially protected against this brain damage, suggesting phone radiation may harm brain tissue but antioxidants could help.
Bodera P et al. · 2015
Researchers exposed rats to 1800 MHz radiofrequency radiation (the same frequency used in cell phones) for 15 minutes, five times daily, and measured oxidative damage in their organs. They found increased lipid peroxidation (cellular damage from oxidation) in the brain, blood, and kidneys of exposed animals. This suggests that repeated cell phone-frequency radiation exposure may cause oxidative stress damage to vital organs.
Bodera P et al. · 2012
Polish researchers exposed rats to cell phone-frequency electromagnetic fields (1500 MHz and 1800 MHz) for 15 minutes and tested how well the painkiller tramadol worked afterward. While the EMF exposure alone didn't change pain sensitivity, it significantly reduced tramadol's pain-relieving effects when the two were combined. This suggests that EMF exposure from devices like cell phones might interfere with how certain medications work in the body.
Sharifian A, Gharavi M, Pasalar P, Aminian O · 2009
Researchers studied 46 spot welders exposed to magnetic fields at work versus unexposed workers. Exposed workers showed 22% and 12.3% decreases in key antioxidant enzymes in their blood cells, suggesting magnetic field exposure may weaken the body's natural defenses against cellular damage.
Szmigielski et al. · 1998
Researchers studied 61 workers exposed to radio frequency electromagnetic fields and found their natural daily blood pressure and heart rate patterns were disrupted - the normal peaks and valleys were flattened and shifted earlier, suggesting EMF exposure interferes with the body's cardiovascular rhythms.
Unknown authors · 1975
The U.S. Navy sponsored research in 1975 examining the biological and ecological effects of extremely low frequency (ELF) electromagnetic fields, likely related to submarine communication systems. This government-funded study represents early official recognition that ELF fields warranted biological investigation. The research contributed to understanding potential environmental and health impacts of military ELF installations.
Unknown authors · 1970
This 1970 technical report established safety standards for handling high-frequency electromagnetic field sources including VHF, UHF, and microwave frequencies used in industrial and research applications. The document addressed occupational exposure limits for workers operating radio frequency and microwave equipment. This represents early recognition that electromagnetic fields required formal safety protocols to protect human health.
Fragopoulou AF et al. · 2010
Greek researchers exposed mice to cell phone radiation (900 MHz) for 2 hours daily over 4 days. The exposed mice showed significant deficits in learning and remembering spatial information compared to unexposed mice, suggesting cell phone radiation may impair brain memory functions.
Buttiglione M et al. · 2007
Researchers exposed human brain cells to 900 MHz radiofrequency radiation (the same frequency used by GSM cell phones) at power levels similar to what your phone emits. They found that this radiation activated stress response genes, disrupted normal cell division, and triggered cell death pathways. The effects occurred at radiation levels considered 'safe' by current standards, suggesting that RF exposure may interfere with fundamental cellular processes in brain tissue.
Tkalec M, Malaric K, Pevalek-Kozlina B. · 2005
Scientists exposed duckweed plants to cell phone-like electromagnetic frequencies and found that 900 MHz signals significantly stunted plant growth within just 2 hours, while 400 MHz had no effect. This demonstrates that EMF biological effects depend on specific frequencies, not just signal strength.
Calabrò E et al. · 2012
Italian researchers exposed human brain cells to cell phone radiation at 1800 MHz for 2-4 hours and measured stress protein responses. They found that the radiation triggered cellular stress responses in the neurons, specifically decreasing one protective protein (Hsp20) and increasing another (Hsp70) after longer exposure. This suggests that cell phone radiation can activate stress pathways in brain cells even at levels considered safe by current standards.
Chen Q et al. · 2012
Researchers studied 225 female factory workers exposed to radiofrequency radiation from manufacturing equipment versus 100 unexposed workers. Exposed workers showed significantly higher rates of slow heart rhythms, though other factors like age and smoking complicated determining radiation as the direct cause.
Tattersall JE et al. · 2001
Researchers exposed rat brain tissue to cell phone-frequency radiation at 700 MHz and found it altered brain cell electrical activity by up to 120%, even at extremely low power levels that caused no heating, suggesting the brain responds to radiofrequency fields through non-thermal biological mechanisms.
Stankiewicz W et al. · 2006
Polish researchers exposed human immune cells to 900 MHz GSM cell phone signals at very low power levels (SAR 0.024 W/kg) and found that the microwave exposure significantly increased immune cell activity. The exposed cells showed stronger responses to immune stimulants and higher activity levels compared to unexposed control cells. This suggests that even low-level cell phone radiation can alter how your immune system functions at the cellular level.
Stankiewicz W et al. · 2006
Researchers exposed human immune cells to 900 MHz microwave radiation (similar to GSM cell phone signals) at very low power levels and found that the radiation significantly increased immune cell activity. The exposed cells showed stronger responses to immune stimulants compared to unexposed control cells. This suggests that even weak microwave radiation can alter how our immune system functions.
Hidisoglu E et al. · 2016
Researchers exposed rats to 2100-MHz radiofrequency radiation (similar to 3G cell phone signals) for 2 hours daily, comparing short-term (1 week) versus long-term (10 weeks) exposure. They found that short-term exposure actually improved brain function and antioxidant defenses, while long-term exposure caused brain dysfunction and oxidative damage. This suggests that duration of EMF exposure matters significantly for health effects.
Liu ML, Wen JQ, Fan YB. · 2011
Researchers exposed rat brain neurons to 1800 MHz cell phone radiation for 24 hours and found it caused significant cell death. However, when they treated the neurons with green tea polyphenols (natural compounds found in green tea), the protective compounds prevented much of the radiation-induced damage. This suggests that certain natural antioxidants might help protect brain cells from the harmful effects of cell phone radiation.
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.
Marjanovic Cermak AM, Pavicic I, Trosic I · 2017
Croatian researchers exposed human brain cells to cell phone radiation for 10-60 minutes and found significant cellular damage. Even brief exposures increased harmful molecules that damage cells, with one hour causing damage to fats and proteins. This shows brain cells are vulnerable to short-term radiation exposure.
Marjanovic Cermak AM et al. · 2017
Researchers exposed human cells to cell phone radiation (1800 MHz) for up to 60 minutes at typical phone power levels. The cells showed signs of oxidative stress, including increased harmful free radicals and elevated cellular defense responses, even without heating effects.
Marjanovic AM, Pavicic I, Trosic I, · 2015
Researchers exposed hamster cells to cell phone-level radiofrequency radiation (1800 MHz) for 10, 30, and 60 minutes to study cellular damage. They found that even brief 10-minute exposures significantly increased reactive oxygen species (cellular stress markers) and disrupted the cells' natural balance between oxidation and antioxidant defense. This suggests that RF radiation at levels similar to cell phone use can trigger oxidative stress in living cells.
Marjanovic AM, Pavicic I, Trosic I · 2015
Scientists exposed hamster cells to cell phone radiation (1800 MHz) for 10-60 minutes. Even brief 10-minute exposures significantly increased harmful molecules called reactive oxygen species that can damage cells, showing that phone radiation disrupts cellular balance.