Unknown authors · 2009
Turkish researchers studied 55 electrical workers at transformer and distribution stations, finding significantly higher rates of chromosomal damage and genetic abnormalities compared to 17 unexposed controls. The genetic damage increased with years of exposure to extremely low frequency electromagnetic fields. This suggests occupational EMF exposure may cause DNA damage in human cells.
Unknown authors · 2009
Researchers exposed human stem cells and mature cells to cell phone radiation at frequencies used by GSM (915 MHz) and UMTS (1947.4 MHz) networks. They found that radiation disrupted DNA repair processes more severely in stem cells than in mature cells, with stem cells showing impaired formation of proteins needed to fix DNA breaks. This matters because stem cells are particularly important for cancer development, and the study suggests they may be more vulnerable to cell phone radiation damage.
Unknown authors · 2009
Swedish researchers analyzed national health data and found that public health indicators improved through the early 1990s but began deteriorating sharply after 1997. The researchers suggest this timing coincides with widespread mobile phone adoption and cannot be explained by improved diagnostics alone, raising questions about potential environmental factors including wireless radiation exposure.
Unknown authors · 2009
Italian researchers studied 345 residents living near a 60 kV power line in Rome from 1954-2003, tracking hospital records from 1998-2003. They found significantly increased cancer rates among long-term residents (over 30 years) and those in the highest magnetic field exposure areas. The study also revealed a two-fold increase in heart disease among the most exposed residents.
Unknown authors · 2009
UK researchers measured magnetic field exposure from power lines and electrical equipment in 317 workers across 117 different occupations. They found workplace exposure was significantly higher than home exposure, with welders, printers, and telephone operators facing the highest levels. The study revealed that job classification systems alone poorly predict actual exposure levels.
Unknown authors · 2009
This 2009 Italian research review examined three decades of studies on power line magnetic fields and health, building on the landmark 1979 Wertheimer-Leeper study that first linked childhood cancer to electrical wiring configurations. The researchers found evidence connecting 50-60 Hz magnetic field exposure to increased rates of cancer, heart disease, and blood disorders in highly exposed populations.
Unknown authors · 2009
Canadian researchers studied 548 children with brain tumors and 760 healthy controls, examining their mothers' workplace exposure to extremely low frequency magnetic fields before and during pregnancy. They found that mothers with higher occupational EMF exposure had a 50-60% increased risk of having children who developed brain tumors, particularly astroglial tumors.
Unknown authors · 2009
Researchers measured electromagnetic field exposure in 121 workers and tested their natural killer (NK) cells, which help fight cancer and infections. Workers exposed to magnetic fields above 1 microTesla showed significantly reduced NK cell activity compared to those with lower exposure. This suggests workplace EMF exposure may weaken immune defenses against cancer.
Unknown authors · 2009
Researchers in Bangkok studied 180 adult leukemia patients compared to 756 healthy controls to identify disease risk factors. They found suggestive evidence that GSM cell phone use doubled leukemia risk, while working near power lines increased myeloid leukemia risk by over 4 times. The study also confirmed strong associations with chemical exposures like benzene and pesticides.
Unknown authors · 2009
Turkish researchers studied 55 electrical workers at transformer and power distribution stations to assess DNA damage from occupational EMF exposure. Workers showed significantly higher rates of chromosomal damage and cellular abnormalities compared to unexposed controls, with damage increasing based on years of employment. The study provides evidence that chronic workplace EMF exposure may cause genetic damage in human cells.
Unknown authors · 2009
Finnish researchers tested 29 adults for sensitivity to FM radio and TV tower signals by using a movable wall to create changing electromagnetic standing waves. Nine people showed hand movements that correlated with the electromagnetic field changes, while 14 showed no response at all. The study suggests some people can physically detect broadcast tower radiation.
Unknown authors · 2009
This comprehensive review analyzed multiple studies on long-term mobile phone use and cancer risk, focusing on brain tumors. Researchers found that after 10+ years of use, mobile phone users showed a 30% increased risk for glioma (brain cancer) and acoustic neuroma, with the highest risk on the same side of the head where phones were typically held. The authors concluded that current safety standards are inadequate for long-term exposure.
Unknown authors · 2009
A 2009 hypothesis by epidemiologist Samuel Milham suggests that the elevated cancer rates seen in firefighters may be primarily caused by radio-frequency radiation from their communication equipment, not smoke inhalation as commonly assumed. The cancer types increased in firefighters closely match those found in workers exposed to electromagnetic fields and radiofrequency radiation.
Unknown authors · 2009
German researchers evaluated whether it would be feasible to study long-term health effects in workers exposed to radiofrequency electromagnetic fields on the job. After examining 20 different occupational groups, they found that most jobs don't have enough exposed workers or high enough exposure levels to make meaningful health studies possible. This highlights a major gap in our understanding of occupational RF exposure risks.
Unknown authors · 2009
This 2009 study found that parotid glands (major salivary glands near your ears) respond to mobile phone use by increasing saliva production while decreasing protein content. The researchers concluded this represents a continuous stress response to phone radiation exposure and called for large-scale studies to investigate further.
Unknown authors · 2009
A case-control study of 180 leukemia patients in Bangkok found no clear association with cell phone use, though usage durations were short (median 24-26 months). However, researchers found elevated leukemia risk among GSM service users and those with certain usage practices, alongside strong associations with chemical exposures and powerline work.
Unknown authors · 2009
Researchers tracked 30 teenagers' actual phone use for one week using modified phones that recorded which ear they used, then compared this to what the teens reported on questionnaires. The study found teenagers were surprisingly inaccurate at remembering which side of their head they typically held their phone, with only modest agreement between actual and reported use.
Unknown authors · 2009
Researchers analyzed brain tumor rates in four Nordic countries from 1974-2003, covering 60,000 cases in 16 million adults. They found steady increases in glioma and meningioma rates throughout the study period, but no acceleration after 1998 when mobile phone use exploded. This timing suggests mobile phones didn't drive the tumor increases observed.
Stang A et al. · 2009
German researchers studied 459 people with uveal melanoma (a rare eye cancer) to see if mobile phone use increased their risk. They compared these cancer patients to over 1,000 control subjects and found no connection between regular mobile phone use and developing this type of eye cancer. This study contradicted the researchers' own previous findings that had suggested a link.
Sannino A et al. · 2009
Researchers exposed human skin cells to 900 MHz radiofrequency radiation (the same frequency used by GSM cell phones) for 24 hours at power levels similar to phone use. They found no DNA damage from the RF radiation alone, and the radiation did not make cells more vulnerable to damage from a known cancer-causing chemical. This suggests that cell phone-level RF exposure may not directly break DNA strands in human cells.
Hansteen IL et al. · 2009
Norwegian researchers exposed human immune cells (lymphocytes) to 2.3 GHz radiofrequency radiation - similar to what cell phones emit - for an entire cell cycle to see if it would damage DNA or chromosomes. They found no statistically significant genetic damage compared to unexposed cells, even when they added a known DNA-damaging chemical to make cells more vulnerable. This suggests that RF radiation at levels used by mobile devices may not directly break chromosomes in immune cells under these laboratory conditions.
Billaudel B et al. · 2009
Researchers exposed human brain tumor cells to cell phone radiation similar to DAMPS and GSM signals for up to 24 hours, then measured changes in an enzyme called ornithine decarboxylase (ODC) that's involved in cell growth. They found no changes in ODC activity regardless of the type of signal, exposure duration, or radiation intensity. This suggests that typical cell phone radiation levels don't affect this particular cellular process in brain cells.
Ahlbom A et al. · 2009
Researchers from the International Commission for Non-Ionizing Radiation Protection reviewed all available studies on mobile phone use and brain tumor risk through 2009. They found no increased risk of brain tumors within approximately 10 years of mobile phone use, though they noted the observation period may be too short to detect slow-growing tumors that could take decades to develop. The review acknowledged significant methodological problems in existing studies, including biased recall of phone usage patterns.
Sannino A et al. · 2009
Researchers exposed human skin cells to 900 MHz radiofrequency radiation (similar to cell phone signals) for 24 hours at 1 W/kg to test for DNA damage. They found no genetic damage from the RF exposure alone, even when testing cells from people with Turner's syndrome who may be more sensitive. The radiation also didn't make cells more vulnerable to damage from a known water contaminant.
Brescia F et al. · 2009
Researchers exposed human immune cells to 1950 MHz cell phone radiation (the frequency used by 3G networks) to see if it would trigger oxidative stress, a cellular damage process linked to aging and disease. They tested various exposure durations and power levels, both alone and combined with iron compounds known to cause oxidative stress. The study found no increase in harmful reactive oxygen species or cell death from the radiation exposure under any conditions tested.
