Rothman KJ, Loughlin JE, Funch DP, Dreyer NA · 1996
Researchers tracked mortality rates among more than 250,000 cellular phone customers in 1994, comparing users of portable phones (which expose the head to radio frequency energy) with mobile phone users (whose antennas were separate from the handset). They found no significant difference in death rates between the two groups, with portable phone users actually showing slightly lower mortality rates.
Holly EA, Aston DA, Ahn DK, Smith AH. · 1996
Researchers studied whether certain jobs and chemical exposures increase the risk of uveal melanoma, a rare eye cancer. They found that men working as chemists, chemical engineers, and technicians had nearly 6 times higher odds of developing this cancer, while welders and those exposed to ultraviolet light, asbestos, and various chemicals also showed elevated risks. This suggests occupational exposures may be an important but overlooked factor in eye cancer development.
Funch DP, Rothman KJ, Loughlin JE, Dreyer NA · 1996
Researchers surveyed over 5,000 cellular phone users in 1996 to determine whether phone company billing records could accurately track phone usage for health studies. They found that people's self-reported phone use matched billing records quite well (74% correlation), and discovered that most users consistently favor one side of their head when talking, which affects radiation exposure patterns.
Bortkiewicz A, Gadzicka E, Zmyslony M, · 1996
Researchers studied 71 broadcast station workers exposed to medium-frequency electromagnetic fields and compared their heart rate variability (a measure of nervous system control over heart rhythm) to 22 unexposed workers. The exposed workers showed impaired nervous system regulation of their cardiovascular function, with higher electromagnetic field intensities correlating with greater disruption. This suggests that occupational EMF exposure may interfere with the body's ability to properly control heart function.
Singh B, Bate LA · 1996
Researchers exposed pigs to 915 MHz microwave radiation at two power levels for 24 hours and examined immune cells in their lungs called pulmonary intravascular macrophages. They found that lower-power microwave exposure activated these immune cells, while higher-power exposure actually damaged lung tissue. This suggests that even microwave levels intended for beneficial heating can trigger immune responses in the lungs.
Unknown authors · 1995
Researchers exposed human leukemia cells to 60 Hz magnetic fields at various strengths for 20 minutes to test whether power line frequency EMF could activate cancer-related genes. Despite using improved methods and testing conditions similar to previous positive studies, they found no effect on MYC or beta-actin gene expression. This contradicts earlier claims that EMF exposure rapidly activates genes involved in cell growth.
Unknown authors · 1995
Researchers exposed B-lineage lymphoid cells (immune system cells) to low-energy electromagnetic fields and found the EMF activated specific protein kinases called Lyn and Syk. This activation triggered a cascade of cellular changes including protein phosphorylation and downstream enzyme activation. The findings suggest EMF exposure can directly alter immune cell signaling pathways.
Unknown authors · 1995
Researchers studied 93 dogs with lymphoma and 137 control dogs to examine whether residential magnetic field exposure increases cancer risk. Dogs living near high-current power lines had 6.8 times higher lymphoma risk, with outdoor dogs showing greater vulnerability. This suggests pets may serve as early warning indicators for EMF health effects in shared living environments.
Unknown authors · 1995
This 1995 Denver study examined childhood cancer risk in homes with different plumbing types. Children living in homes with conductive metal plumbing (which can carry ground currents that create magnetic fields) had 72% higher cancer risk, rising to 200% higher risk in families who hadn't moved. The study found that specific magnetic field patterns indicating ground currents were associated with 4 times higher cancer risk.
Unknown authors · 1995
Researchers exposed human lymphoid cells and leukemic cells to 50 Hz magnetic fields at various strengths and durations to see if they would increase c-myc gene expression, which is linked to cancer development. The study found no significant changes in c-myc levels in either synchronized or non-synchronized cells, suggesting these power-line frequency fields don't promote cancer-related gene activity under these laboratory conditions.
Unknown authors · 1995
Researchers exposed human cancer cells (HL60 and Daudi) to 60 Hz magnetic fields at various intensities for 20-60 minutes, looking for changes in gene expression that might explain cancer risks. Despite testing a wide range of conditions and using rigorous controls, they found no changes in MYC gene activity or other genetic markers. This challenges earlier studies that claimed power line frequencies rapidly activate cancer-related genes.
Unknown authors · 1995
Cambridge researchers exposed human leukemic cells to 60 Hz magnetic fields at various strengths for 20 minutes, measuring gene activity that could indicate cancer promotion. Despite using improved methods and testing conditions similar to previous studies that found effects, they detected no changes in key cancer-related genes. This negative result adds to the mixed scientific picture on whether power line frequencies can influence cellular processes.
Unknown authors · 1995
This 1995 review examined radiofrequency radiation health effects across military personnel, broadcast workers, and other occupational groups exposed to radar and microwave equipment. The analysis found evidence linking sufficient microwave exposures to blood count changes, genetic damage, reproductive problems including miscarriages, and increased cancer rates in blood, brain, and breast tissues. The author concluded these effects mirror those seen with ionizing radiation and recommended stronger protective measures than current regulations require.
Reiser H, Dimpfel W, Schober F · 1995
Researchers exposed 36 volunteers to electromagnetic fields from both a medical therapy device and a mobile phone, then measured their brain activity using EEG recordings. Both EMF sources caused measurable changes in brain wave patterns, with the therapy device affecting brain activity immediately and the mobile phone causing delayed effects about 15 minutes after exposure. This demonstrates that electromagnetic fields can directly alter human brain function in ways that persist even after the exposure ends.
Unknown authors · 1994
Researchers exposed pigmented Long-Evans rats to 50-Hz magnetic fields at power line frequency for 6 weeks and found significant reductions in melatonin levels in both blood and pineal glands. Even very low exposure levels (0.02 microTesla) suppressed melatonin production, with greater suppression at higher levels (1 microTesla). This confirms that melatonin disruption from magnetic fields affects both pigmented and albino rats.
Unknown authors · 1994
Researchers conducted provocation tests on two patients who claimed to suffer skin problems from computer screen exposure. The study found high numbers of specific immune cells (mast cells and somatostatin-positive cells) in skin biopsies, with changes occurring after TV screen exposure. The authors suggest these cellular changes may explain symptoms like itching, pain, swelling and redness that some people experience around electronic displays.
Unknown authors · 1994
Researchers studied 152 women in Orange County, California, measuring depression symptoms in those living next to high-voltage transmission lines versus those living one block away. Despite homes near power lines having seven times higher magnetic field levels (4.86 mG vs 0.68 mG), no significant difference in depression scores was found between the groups.
Unknown authors · 1994
This 1994 study examined 183 electrical workers from the Vietnam Experience Study to see if occupational EMF exposure increases depression risk. While electrical workers overall showed no increased depression rates, electricians specifically showed some indicators of higher depression risk across multiple psychological measures.
Unknown authors · 1994
Researchers exposed fertilized chicken eggs to weak 100 Hz pulsed magnetic fields for just the first 48 hours, then allowed normal development for 9 more days. Embryos showed significantly higher rates of developmental abnormalities and early death, proving that brief early EMF exposure can cause permanent damage that persists long after exposure ends.
Unknown authors · 1994
Researchers exposed E. coli bacteria to weak pulsed magnetic fields (1.5 mT) for one hour and found that numerous proteins either doubled or halved in concentration. The study confirmed increases in two specific proteins involved in DNA transcription and gene regulation. This demonstrates that even brief exposure to relatively weak magnetic fields can significantly alter cellular protein production.
Unknown authors · 1994
Researchers exposed human cells infected with SV-40 virus to 60 Hz electromagnetic fields (the same frequency used in household electricity). They found that EMF exposure increased both the genetic instructions (mRNA) and protein produced by the viral DNA integrated into the cells. This demonstrates that common power-frequency fields can alter how foreign genetic material behaves inside human cells.
Unknown authors · 1994
Swedish researchers studied adults living within 300 meters of high-voltage power lines from 1960-1985, examining 325 leukemia cases and 223 brain tumor cases. They found that magnetic field exposure above 0.2 microT doubled the risk of certain blood cancers, particularly acute and chronic myeloid leukemia. Brain tumors showed no increased risk.
Unknown authors · 1994
Researchers investigated a cluster of 12 childhood leukemia cases on Hawaii's Waianae Coast from 1979-1990, finding a statistically significant 109% increase in leukemia rates. Children living within 2.6 miles of low-frequency radio towers showed double the risk, though the small sample size meant this finding wasn't statistically significant.
Guberan E et al. · 1994
Swiss researchers studied whether shortwave radiation exposure during pregnancy affects the gender ratio of babies born to female physiotherapists, following up on a Danish study that found fewer male births. They surveyed 2,846 Swiss physiotherapists about their radiation exposure and children's gender, analyzing 1,781 pregnancies. The study found no difference in gender ratios between exposed and unexposed mothers, contradicting the earlier Danish findings.
Zhao Z, Zhang S, Zho H, Zhang S, Su J, Li L, · 1994
Chinese researchers studied 121 workers exposed to radiofrequency radiation below 30 MHz for over a year, comparing those exposed to high levels (100 V/m or higher) versus low levels. While blood tests and nervous system function remained normal in both groups, workers exposed to higher radiation levels showed heart rhythm abnormalities on their electrocardiograms (ECGs). The researchers suggested 100 V/m as a safety limit for this type of radiation exposure.
