Unknown authors · 2009
Slovak researchers exposed newborn and elderly rats to 2.45 GHz pulsed electromagnetic fields (the same frequency as WiFi and microwave ovens) and found significant disruption to brain cell development. The study revealed that EMF exposure reduced the number of new brain cells forming in the rostral migratory stream, with effects varying by age and exposure duration. This suggests that developing brains may be particularly vulnerable to wireless radiation.
Unknown authors · 2009
This comprehensive review examined radiofrequency research from 2004-2007, analyzing studies on mobile phones, wireless networks, and RF health effects including cancer, neurological impacts, and biological changes. The authors concluded there was no clear evidence of adverse health effects from RF fields during this period, though they recommended continued research especially regarding children's mobile phone use.
Unknown authors · 2009
This 2009 analysis compared early cell phone brain tumor studies and found stark differences between industry-funded research (Interphone studies) and independent Swedish studies. The industry-funded studies found no increased brain tumor risk, while independent research consistently showed significant increases in brain tumor risk from cell phone and cordless phone use.
Unknown authors · 2009
Air Force researchers exposed rats to 915 MHz radiofrequency radiation (similar to some cell phone frequencies) for 30 minutes at various power levels to test whether it damages the blood-brain barrier. They found no detectable leakage of albumin proteins across this critical protective barrier, contradicting earlier studies from Sweden's Lund University that reported such damage.
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
Japanese researchers exposed 64 rats to 915 MHz electromagnetic fields (similar to older cell phones) for 2 hours at various power levels, then examined their brains 14 and 50 days later. They found no evidence of blood-brain barrier leakage or brain cell damage, contradicting an earlier Swedish study that reported such effects. This study suggests 915 MHz radiation may not damage the brain barrier as previously claimed.
Unknown authors · 2009
Italian researchers exposed rats to two types of electromagnetic fields - 50 Hz magnetic fields (like power lines) and 1.8 GHz radiofrequency fields (like cell phones) - and measured blood chemistry markers throughout the day. Both EMF types disrupted the natural daily rhythms of glucose, cholesterol, and triglycerides in the animals' blood. This suggests EMF exposure can interfere with fundamental biological processes that follow our internal clocks.
Unknown authors · 2009
This 2009 Health Canada review examined how radiofrequency radiation from wireless devices affects gene and protein expression in cells and tissues. The researchers found mixed results, with some studies showing RF radiation can alter cellular gene activity while others found no clear effects. This matters because changes in gene expression could potentially lead to harmful health outcomes, though the evidence remains inconsistent.
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
This comprehensive review examined how radiofrequency electromagnetic fields from mobile phones affect the human nervous system. While researchers found some minor changes in brain wave patterns (EEG) during GSM phone signal exposure, these changes were not linked to any health problems. Studies consistently showed no significant effects on hearing, balance, or cognitive performance in adults or children.
Unknown authors · 2009
This comprehensive review examined how cell phone radiation affects cells at the molecular level, identifying the cell membrane as a primary target for damage. The researchers found that radiofrequency waves from phones trigger harmful oxidative stress by disrupting key cellular structures and processes, with particular focus on male reproductive health. The study reveals multiple pathways through which phone radiation can damage DNA and trigger cell death.
Unknown authors · 2009
Researchers exposed human stem cells and regular cells to GSM and UMTS mobile phone frequencies, finding that the radiation significantly disrupted DNA repair processes. Stem cells showed much stronger negative effects than mature cells, with impaired ability to form protective repair proteins at DNA damage sites. This suggests stem cells may be particularly vulnerable to mobile phone radiation, potentially increasing cancer risk.
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.
Ziemann C et al. · 2009
Researchers exposed mice to cell phone radiation (GSM and DCS signals) for 2 hours daily, 5 days a week for two years to test whether it damages DNA. They measured micronuclei (small DNA fragments that indicate genetic damage) in blood cells and found no difference between exposed and unexposed mice. This suggests that chronic exposure to these specific cell phone frequencies at the tested levels did not cause detectable genetic damage in this animal model.
Tamer A, Gündüz H, Ozyildirim S · 2009
Turkish researchers tested whether mobile phones placed directly on the chest affect heart function in 24 healthy volunteers. They measured heart rate, blood pressure, and electrical activity of the heart when phones were off, on, and ringing. The study found no significant changes in any heart measurements, suggesting that mobile phones positioned near the heart do not immediately disrupt cardiac function in healthy adults.
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.
Sommer et al. · 2009
Researchers exposed mice to cell phone radiation (UMTS signals at 1966 MHz) continuously for their entire lives across four generations to study effects on reproduction and development. They found no harmful effects on fertility, pup development, or reproductive health, even at exposure levels up to 1.3 W/kg SAR. The only minor finding was some changes in food consumption patterns without a clear dose-response relationship.
Söderqvist F, Carlberg M, Hardell L · 2009
Swedish researchers tested whether wireless phone use affects the blood-brain barrier (the protective boundary between blood and brain tissue) by measuring S100B protein levels in blood samples from 1,000 adults. They found no significant association between phone use and elevated S100B levels, suggesting that wireless phones don't appear to compromise blood-brain barrier integrity based on this biomarker.
Schoemaker MJ, Swerdlow AJ · 2009
British researchers studied 291 people with pituitary tumors (small growths in a brain gland that regulates hormones) and 630 healthy controls to see if cell phone use increased tumor risk. They found no association between cell phone use and pituitary tumors, even among the heaviest users or those who had used phones for over 10 years. This suggests that cell phone radiation doesn't appear to cause this specific type of brain tumor.
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.
Salama N, Kishimoto T, Kanayama HO, Kagawa S · 2009
Researchers exposed male rabbits to cell phone radiation (900 MHz) for 8 hours daily over 12 weeks to study effects on semen quality. They found that phone radiation significantly reduced both sperm motility (movement ability) and fructose levels in semen, which sperm need for energy. The study suggests that prolonged cell phone exposure near reproductive organs may impact male fertility.
Rağbetli MC, Aydinlioğlu A, Koyun N, Rağbetli C, Karayel M · 2009
Researchers exposed pregnant mice to mobile phone radiation throughout pregnancy and then examined brain cell counts in their offspring's hippocampus (the brain region crucial for memory and learning). They found no significant difference in the number of pyramidal cells between exposed and unexposed offspring. However, the study lacked important details about exposure levels and duration, making it difficult to assess how these findings relate to human mobile phone use.
