Browse 6,486 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 518 studies (Human Studies) from Powerwatch EMF Bibliography
Palumbo R et al. · 2008
Italian researchers exposed human immune cells to cell phone radiation for one hour and found a 22-32% increase in caspase 3, an enzyme linked to cellular stress. The effect only occurred in actively dividing cells, suggesting mobile phone radiation may impact growing immune cells.
Karinen A, Heinavaara S, Nylund R, Leszczynski D. · 2008
Researchers exposed forearm skin in 10 women to typical mobile phone radiation levels, then analyzed tissue samples. They found 8 proteins significantly altered by the radiation exposure, with 2 proteins affected in all participants, demonstrating measurable biological changes from phone radiation.
Liu T, Wang S, He L, Ye K. · 2008
The study investigated whether anxiety levels could be affected by repeated extremely low frequency magnetic field (ELF MF) exposure of different daily durations. Rats exposed for 4 h/day showed increased anxiety-like behaviors in the open field test and the elevated plus maze test, without changes in locomotor activity, but showed no effect in the light/dark box test. Rats exposed for 1 h/day showed no effect in any of the tests.
Yao K, Wu W, Wang K, Ni S, Ye P, Yu Y, Ye J, Sun L. · 2008
Researchers exposed cultured human lens epithelial cells (HLECs) to a 1.8 GHz GSM radiofrequency field for 2 hours at specific absorption rates of 1, 2, 3, and 4 W/kg, then measured intracellular reactive oxygen species (ROS) and DNA damage. After exposure to 1.8 GHz RF for 2 h, HLECs exhibited significant intracellular ROS increase in the 2, 3, and 4 W/kg groups, and RF at 3 W/kg and 4 W/kg induced significant DNA damage consisting mainly of single strand breaks. When the radiofrequency field was superposed with 2 μT electromagnetic noise, the noise blocked the RF-induced ROS increase and DNA damage.
Schwarz C et al. · 2008
Researchers exposed human cultured fibroblasts and human lymphocyte cultures to 1,950 MHz UMTS electromagnetic fields at specific absorption rates below the safety limit of 2 W/kg. UMTS exposure increased the comet tail factor and induced centromere-negative micronuclei in human cultured fibroblasts in a dose- and time-dependent way. Incubation for 24 hours at a SAR of 0.05 W/kg produced a statistically significant rise in both the comet tail factor and micronuclei (P = 0.02). No UMTS effect was found in lymphocytes, whether unstimulated or stimulated with Phytohemagglutinin. The researchers concluded that UMTS exposure may cause genetic alterations in some but not in all human cells in vitro.
Mazor R et al. · 2008
Researchers exposed human peripheral blood lymphocytes from 10 samples to radiofrequency electromagnetic fields at 800 MHz for 72 hours in a waveguide resonator at specific absorption rates of 2.9 and 4.1 W/kg. The study found increased levels of aneuploidy depending on the chromosome studied and the level of exposure, with chromosomal gains appearing to be the primary contributor. Temperature was tested over a range of 33.5–40°C for 72 hours and showed no statistically significant difference in aneuploidy levels compared to 37°C, suggesting the effect may not be due to heating.
Manti L et al. · 2008
Researchers exposed human peripheral blood lymphocytes in vitro to a UMTS signal at a frequency carrier of 1.95 GHz for 24 hours at 0.5 and 2.0 W/kg SAR. Cells were also given 4 Gy of X rays immediately before RF radiation or sham exposures, and chromosome aberrations were measured by fluorescence in situ hybridization. No significant variations due to the UMTS exposure were found in the fraction of aberrant cells, but the frequency of exchanges per cell showed a small but statistically significant increase of 0.11 exchange per cell compared to 0 W/kg SAR.
Unknown authors · 2007
Scientists developed a mathematical model showing how magnetic nanoparticles inside cells could increase DNA damage and cancer risk by generating harmful free radicals. The model suggests these particles may explain why childhood leukemia rates are elevated, particularly in very young children whose cells are rapidly dividing.
Unknown authors · 2007
UK researchers developed and tested a questionnaire to identify symptoms that people with electromagnetic hypersensitivity (EHS) experience, surveying 20,000 randomly selected individuals. The study identified eight categories of symptoms including neurological, skin, auditory, headache, heart, cold-related, movement, and allergy symptoms. The questionnaire successfully distinguished between people who believe they have EHS and control groups, providing researchers with a standardized tool to study this controversial condition.
Unknown authors · 2007
This 2007 study tested how well people claiming electromagnetic hypersensitivity (EHS) could actually detect electrical currents at 50 Hz power line frequency. Researchers found that EHS groups varied dramatically depending on how they were recruited, with many showing no greater electrical sensitivity than the general population.
Unknown authors · 2007
Researchers investigated the unusual phenomenon where humans and animals can actually hear pulsed microwave radiation, despite electromagnetic waves normally being invisible and silent. The study found that microwave pulses create tiny heat expansions in head tissues that generate sound waves, which travel through bone to the inner ear where they're perceived as clicks or buzzing sounds. This effect occurs with frequencies from hundreds of MHz to tens of GHz, including those used by wireless devices and MRI machines.
Unknown authors · 2007
Researchers tested 84 healthy young adults to see if they could consciously detect GSM cell phone radiation (902 MHz) in controlled laboratory conditions. Despite financial incentives for good performance, participants performed no better than random guessing, providing evidence against electromagnetic sensitivity to mobile phone fields.
Unknown authors · 2007
Iranian researchers studied 60 children with acute leukemia and 59 healthy children, examining their proximity to high-voltage power lines (123-400 kilovolts). Children living within 500 meters of these lines showed 8.67 times higher odds of developing leukemia. The study found 23.5% of leukemia patients lived near high-voltage lines compared to only 3.3% of healthy children.
Unknown authors · 2007
Researchers created a detailed computer model of a pregnant woman to study how 50 Hz electric and magnetic fields (like those from power lines) affect the fetus. They found that while the mother's brain stayed within safety limits, the fetus experienced electric current densities that significantly exceeded international safety guidelines.
Unknown authors · 2007
Researchers investigated 196 UK homes to identify sources of elevated power frequency magnetic field exposure linked to childhood leukemia risk. They found that 77% of exposures above 0.2 microT came from low-voltage electrical sources within homes (like wiring problems), while high-voltage power lines accounted for only 23%. This challenges the common focus on overhead power lines as the primary concern.
Unknown authors · 2007
This SAGE interim assessment examined the relationship between electromagnetic field exposure from power lines, home wiring, and electrical equipment in homes and health outcomes in human subjects. The study evaluated potential health effects associated with residential EMF exposure from these common household and utility sources.
Unknown authors · 2007
Researchers used computer modeling to estimate cancer risks from 64-slice CT coronary angiography (CTCA), a common heart imaging test. They found radiation doses ranged from 42-91 mSv to the lungs and 50-80 mSv to female breast tissue, with lifetime cancer risk varying from 1 in 143 for young women to 1 in 3,261 for elderly men. Women, younger patients, and those receiving combined heart and aortic scans faced significantly higher cancer risks from this single diagnostic procedure.
Unknown authors · 2007
Researchers in Northern England studied 4,723 children with cancer and found that those whose fathers worked in jobs with electromagnetic field or radiation exposure had a 31% higher risk of leukemia. The risk was particularly elevated (81% higher) for boys under age 6, while girls showed no significant increase.
Unknown authors · 2007
Researchers studied 854 people diagnosed with blood cancers in Tasmania between 1972-1980, comparing them to matched controls based on their proximity to high-voltage power lines. Living within 300 meters of power lines increased cancer risk, with children under 5 showing a fivefold higher risk that persisted into adulthood.
Unknown authors · 2007
Researchers surveyed Iranian university students about health symptoms and their use of mobile phones, cordless phones, and computer screens. Despite high rates of headaches (53.5%) and fatigue (35.6%), they found no significant association between EMF device usage and symptom prevalence. The authors suggested that media coverage differences between developing and developed countries might explain why their results differed from studies showing EMF-symptom connections.
Ribeiro EP, Rhoden EL, Horn MM, Rhoden C, Lima LP, Toniolo L · 2007
Researchers exposed adult rats to cell phone radiation (1,835-1,850 MHz) for one hour daily over 11 weeks to test effects on reproductive function. They found no changes in testosterone levels, sperm count, testicular weight, or tissue damage compared to unexposed rats. This study suggests that typical cell phone radiation exposure may not harm male fertility in the short term.
Oftedal G, Straume A, Johnsson A, Stovner L · 2007
Researchers tested 17 people who claimed mobile phones caused their headaches by exposing them to real phone radiation and fake radiation without telling them which was which. The participants actually reported slightly more pain during the fake exposures than the real ones, and their heart rate and blood pressure didn't change based on whether they received real or fake radiation. This suggests mobile phone headaches are likely a nocebo effect - where expecting negative effects can actually cause symptoms even without real exposure.
Hardell L et al. · 2007
Swedish researchers studied 888 men with testicular cancer and 870 healthy controls to see if using cell phones or cordless phones increased cancer risk. They found no meaningful association between phone use and either type of testicular cancer (seminoma or non-seminoma), with risk estimates hovering around normal levels regardless of phone type. The study also found no connection between where men kept their phones (like trouser pockets) and cancer development.
Eltiti S et al. · 2007
Researchers tested whether people who report electromagnetic sensitivity experience symptoms when exposed to cell tower signals by comparing their reactions to real signals versus fake exposure. When participants knew what they were being exposed to, sensitive individuals reported feeling worse with real signals. However, when neither researchers nor participants knew which exposure was real (double-blind testing), the sensitive individuals showed no consistent negative reactions to the cell tower signals.
Haarala C et al. · 2007
Finnish researchers tested whether mobile phone radiation affects thinking skills by having 36 men perform cognitive tasks while exposed to different types of phone signals on either the left or right side of their heads. They found no measurable differences in mental performance between real phone radiation exposure and fake exposure, regardless of which side of the head was exposed. The study suggests that typical mobile phone use doesn't impair basic cognitive functions like memory or attention in healthy adults.