Browse 8,655 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 1,416 studies from Powerwatch EMF Bibliography
Lai H, Horita A, Guy AW, · 1994
Researchers exposed rats to microwave radiation at 2450 MHz for 45 minutes, then tested their maze navigation abilities. The exposed rats showed significant memory problems, getting lost more often and struggling to learn. This suggests microwave exposure may impair brain function and spatial memory.
Unknown authors · 1993
Researchers tested whether specific combinations of magnetic fields could trigger 'cyclotron resonance' effects in calcium ions within mouse immune cells, measuring intracellular calcium levels during 60-minute exposures. Despite testing conditions at 16 Hz and 50 Hz frequencies that theoretically should affect calcium, no changes in calcium concentration were detected. This challenges claims that certain magnetic field combinations can produce significant biological effects through cyclotron resonance mechanisms.
Unknown authors · 1993
Researchers surveyed people living near high-voltage power transmission lines in 1987 and found those with homes close to the lines had nearly three times higher rates of depressive symptoms compared to those living farther away. The association remained strong even after accounting for demographics and attitudes about power lines, suggesting the electromagnetic fields from transmission lines may affect mental health.
Unknown authors · 1993
This 1993 review examined whether power line frequencies (50-60 Hz electric and magnetic fields) can damage DNA or cause genetic mutations. The researchers found that while most studies showed no direct DNA damage, some positive findings existed, and the inconsistent study methods made definitive conclusions difficult.
Unknown authors · 1993
Researchers exposed human leukemia cells to extremely low frequency electromagnetic fields and found that EMF selectively altered gene activity. While overall RNA levels stayed the same, EMF increased production of ribosomal RNA by 40-50% but also accelerated its breakdown, creating a hidden cellular disruption. This demonstrates that EMF can interfere with fundamental gene regulation processes even when surface measurements appear normal.
Unknown authors · 1993
This 1993 comprehensive review analyzed 55 studies testing whether electric and magnetic fields can damage DNA or cause genetic mutations. The researchers examined everything from microbes to human cells, looking at both extremely low frequency (ELF) fields from power lines and static fields from various sources. The evidence showed no clear genotoxic potential from EMF exposure under normal conditions.
Unknown authors · 1993
Researchers exposed female rats to weak 50 Hz magnetic fields (100 microtesla) for 24 hours daily while giving them a chemical that causes breast cancer. The magnetic field-exposed rats developed 50% more mammary tumors than unexposed rats, and their tumors grew larger. This suggests that power line frequency magnetic fields can promote cancer growth.
Unknown authors · 1993
Researchers exposed human immune T-cells to weak 50 Hz magnetic fields (the same frequency as electrical power lines) and found the fields triggered calcium oscillations inside the cells similar to immune activation responses. The magnetic field strength was only 0.1 millitesla, about 200 times weaker than an MRI machine, yet produced measurable cellular changes that stopped when the field was turned off.
Unknown authors · 1993
Swedish researchers studied 142 children who developed cancer while living within 300 meters of high-voltage power lines from 1960-1985. Children exposed to magnetic fields above 0.2 microtesla had 2.7 times higher leukemia risk, with risk increasing to 3.8 times at 0.3 microtesla levels. The association was specific to leukemia and did not appear for other childhood cancers.
Unknown authors · 1993
This 1993 Finnish study examined cancer risk in children living near power lines, contributing to early research on extremely low frequency magnetic fields and childhood leukemia. The research focused on developing better methods to combine data from different types of studies to overcome the challenge of studying rare diseases like childhood cancer.
Unknown authors · 1993
This 1993 BMJ study examined cancer risks in children living near high voltage power lines and facilities. The research focused on developing better methods to combine data from multiple studies of different designs to overcome the challenge of studying rare diseases like childhood leukemia. The work aimed to improve how scientists pool research data to draw stronger conclusions about electromagnetic field health effects.
Unknown authors · 1993
Researchers found six cases of testicular cancer among 340 police officers between 1979 and 1991, nearly seven times higher than expected. The only common factor was that all affected officers regularly used handheld radar guns positioned close to their testicles during traffic enforcement. This study suggests occupational radar exposure may increase testicular cancer risk.
Goldoni J, Durek M, Koren Z · 1993
Researchers in Croatia studied 49 radar operators and 46 radio relay workers exposed to microwave and radiofrequency radiation at work, comparing them to 46 airport workers not exposed to these fields. Over 18 months, they found significant changes in blood parameters, brain electrical activity, and eye health among the radar operators. The study suggests that long-term workplace exposure to microwaves and radiofrequencies may harm sensitive body systems.
Unknown authors · 1992
Scientists discovered magnetite crystals naturally occurring in human brain tissue for the first time, finding millions of these magnetic particles per gram in various brain regions. The crystals resemble those found in magnetotactic bacteria and fish, suggesting biological formation. This discovery may explain how low-frequency magnetic fields could potentially affect brain function.
Unknown authors · 1992
This 1992 in vitro study reviewed evidence that extremely low-frequency (ELF) electromagnetic fields below 300 Hz can produce cellular changes in immune system cells at nonthermal exposure levels. The research examined the role of calcium signaling and cell membrane processes in mediating these electromagnetic field effects, proposing that Ca2+ regulation is involved in how ELF fields induce cellular responses.
Unknown authors · 1992
Scientists exposed human immune cells to weak 60 Hz magnetic fields (similar to power lines) for up to 2 hours and found significant changes in how important genes were turned on and off. The study showed that magnetic fields altered the activity of genes that control cell growth and immune responses, with effects varying by exposure time and cell density.
Unknown authors · 1992
This 1992 in vitro study reviewed evidence that extremely low-frequency (ELF) electromagnetic fields below 300 Hz can induce cellular changes in immune system cells through nonthermal mechanisms. The research examined the role of calcium signaling and proposed that membrane-mediated Ca2+ signaling processes are involved in mediating these electromagnetic field effects on immune cells.
Unknown authors · 1991
Researchers studied 232 children with leukemia and 232 healthy controls in Los Angeles County, measuring magnetic and electric fields in their homes and analyzing electrical wiring configurations. While direct EMF measurements showed no clear cancer risk, children living in homes with high-current electrical wiring had more than double the leukemia risk compared to those in low-EMF wiring configurations.
Unknown authors · 1990
This 1990 case-control study examined 374 childhood cancer cases in Yorkshire, England, comparing them to 588 healthy controls to determine if living near overhead power lines increased cancer risk. Researchers calculated magnetic field strengths at children's birth addresses and found no association between childhood cancer and either proximity to power lines or magnetic field exposure.
Unknown authors · 1989
University of Washington researchers exposed rats to pulsed 2.45 GHz microwaves (the same frequency as microwave ovens) and found significant changes to brain chemistry systems involved in memory and learning. The study showed that even low-level microwave exposure altered choline uptake and muscarinic receptors in brain regions critical for cognitive function. These neurochemical changes occurred at power levels well below current safety standards.
Unknown authors · 1989
Researchers exposed rats to low-level pulsed microwave radiation at 2.45 GHz (the same frequency as microwave ovens) and found significant changes in brain chemistry, including alterations to the cholinergic system that controls memory and learning. The study revealed that even brief 20-minute exposures affected brain receptor concentrations in key regions like the hippocampus and frontal cortex.
Unknown authors · 1989
Researchers in Wolverhampton, UK surveyed homes to see if 50 Hz magnetic field strength from power lines correlated with depression and heart attacks. They found significantly higher magnetic field levels at homes of people with depression, but no connection to heart attacks.
Unknown authors · 1989
This 1989 study examined whether living near power lines and electrical substations increases leukemia risk in southeast England. Researchers found a doubled risk of leukemia for people living within 50 meters of overhead power lines, though the small number of cases made results statistically uncertain. The study represents early evidence linking residential proximity to electrical infrastructure with blood cancer risk.
Unknown authors · 1989
University of Washington researchers exposed rats to pulsed 2.45 GHz microwaves at levels similar to early mobile devices and found significant disruptions to brain chemistry. The radiation altered choline uptake (critical for memory and learning) and changed receptor concentrations in key brain regions including the hippocampus and frontal cortex. These neurochemical changes occurred at relatively low exposure levels of 0.6 W/kg.
Unknown authors · 1988
This 1988 research examined whether extremely low frequency (ELF) electric and magnetic fields from power lines and electrical devices might contribute to depression. The study found that chronic ELF exposure disrupts the brain's pineal gland function, interfering with melatonin production and circadian rhythms that regulate mood. Epidemiological data showed positive correlations between local magnetic field strength and depression-related suicide rates.