Unknown authors · 2009
Researchers exposed 10 healthy volunteers to 900 MHz GSM cell phone signals and measured brain electrical activity using event-related potentials. Both active phones and sham phones (with electromagnetic power dissipated internally) reduced brain arousal responses compared to phones that were completely off. This suggests cell phone exposure affects brain electrical activity and attention processing.
Unknown authors · 2009
French researchers exposed genetically modified mice prone to ALS (Lou Gehrig's disease) to 50 Hz magnetic fields at levels similar to occupational exposure for 7 weeks. The study found no evidence that magnetic field exposure accelerated disease onset, worsened symptoms, or shortened lifespan in these ALS-susceptible mice.
Unknown authors · 2009
Croatian researchers exposed onion seeds to radiofrequency fields at 400 MHz and 900 MHz (similar to cell phone frequencies) and found significant increases in abnormal cell division. While seed germination wasn't affected, the electromagnetic fields caused chromosome damage and disrupted normal cell division patterns, suggesting potential biological harm at the cellular level.
Shckorbatov YG et al. · 2009
Ukrainian researchers exposed human mouth cells to 35 GHz microwave radiation at very low power levels (30 microW/cm²) and found it caused DNA packaging (chromatin) to condense abnormally and damaged cell membranes. The type of wave polarization affected the severity of damage, with circularly polarized waves sometimes causing less harm than linearly polarized radiation.
Unknown authors · 2009
Croatian researchers exposed rats to 915 MHz microwave radiation (similar to older cell phone frequencies) for one hour daily over two weeks. They found significant DNA damage in white blood cells, with evidence pointing to oxidative stress as the primary mechanism. The study used specialized tests to distinguish between direct DNA breaks and damage caused by harmful oxygen molecules.
Unknown authors · 2009
Croatian researchers studied 50 healthcare workers who handle cancer drugs, using multiple tests to measure DNA damage in their blood cells. Workers showed significantly higher levels of genetic damage compared to unexposed controls, including damaged DNA strands and chromosome abnormalities. The study confirms that occupational chemical exposure can cause measurable genetic harm without proper safety precautions.
Unknown authors · 2009
Researchers exposed developing brain cells to cell phone radiation at 900 MHz (the same frequency used by GSM phones) and found it reduced the number of nerve branches that normally grow during brain development. The radiation also increased production of beta-thymosin, a protein that regulates cell structure, suggesting the EMF interfered with normal neural maturation processes.
Unknown authors · 2009
Researchers studied the electrical properties of different nerve cells in the hearing center of dog brains, finding three distinct cell types with unique response patterns. Each cell type showed different electrical characteristics that help process sound information. This basic neuroscience research helps scientists understand how the auditory system normally functions.
Unknown authors · 2009
This study examined how magnetic fields affect cryptochrome proteins in Arabidopsis plants, which are light-sensitive molecules that help organisms navigate using Earth's magnetic field. The research found that magnetic fields can influence cryptochrome-dependent biological responses. This matters because cryptochrome proteins exist in many species including humans, suggesting magnetic field sensitivity may be more widespread than previously understood.
Unknown authors · 2009
This meta-analysis examined genetic damage data from 87 studies spanning 1990-2007 on mammalian cells exposed to extremely low frequency electromagnetic fields (ELF-EMF). While researchers found statistically significant increases in genetic damage markers like chromosomal aberrations and micronuclei, the biological effects were small and remained within normal spontaneous variation levels. The analysis also revealed considerable publication bias in the research.
Unknown authors · 2009
Researchers exposed mice with Ehrlich ascites carcinoma to extremely weak magnetic fields (as low as 100-300 nT at frequencies of 1, 4.4, and 16.5 Hz) combined with a static field of 42 µT. The treatment dramatically inhibited tumor growth, with tumor tissue practically absent in treated mice while control mice showed extensive cancer spread. Healthy mice showed no adverse effects from the same magnetic field exposure.
Unknown authors · 2009
This comprehensive review examined 50 years of research on extremely low frequency (ELF) electromagnetic fields and their effects on living cells. The analysis found that ELF fields consistently cause numerous cellular changes in laboratory studies, though scientists still debate whether these changes translate to human health risks. The review covered both potential harms (cancer, immune effects) and therapeutic benefits (bone healing, wound repair).
Unknown authors · 2009
German researchers exposed breast cancer cells to 50 Hz electromagnetic fields at 1.2 microTesla (similar to power line levels) and found the EMF increased production of proteins that help cancer spread to other parts of the body. The study suggests that common household electromagnetic field exposure might make existing breast tumors more likely to metastasize.
Unknown authors · 2009
Researchers found that cattle and deer normally align their bodies north-south with Earth's magnetic field, but this natural behavior disappears near high-voltage power lines. The extremely low-frequency electromagnetic fields from power lines disrupt this magnetic sensing ability, with effects diminishing as distance from the lines increases.
Unknown authors · 2009
Researchers measured extremely low frequency magnetic fields in laboratory cell culture incubators and found levels tens of times higher than normal environmental exposure. These elevated magnetic field levels, reaching tens of microteslas compared to typical 0.05-0.1 microtesla background levels, could be affecting experimental results without scientists realizing it.
Unknown authors · 2009
Spanish researchers reviewed 29 studies examining whether magnetic fields can break DNA strands, a key step in cancer development. Half the studies found DNA damage from magnetic field exposure, while half found no effect. The review suggests magnetic fields may act as co-factors that amplify DNA damage rather than directly causing it.
Unknown authors · 2009
This comprehensive 2009 review examined how electric fields, magnetic fields, and electromagnetic fields affect cells and tissues at the biological level. Researchers found that cells naturally produce electric fields through ion channels and transporters, and that external electromagnetic fields can trigger cellular responses that reach all the way to gene expression changes in cell nuclei. The review highlights that living tissues constantly experience alternating electromagnetic fields, making this a fundamental aspect of cell biology.
Unknown authors · 2009
Researchers exposed fruit flies to 50 Hz magnetic fields (the same frequency used in European power grids) and found that exposure reduced egg-laying ability in subsequent generations. The effects persisted across multiple generations, suggesting that electromagnetic field exposure can have lasting reproductive consequences that extend beyond the initially exposed organisms.
Unknown authors · 2009
Researchers exposed pregnant rats and their offspring to 50 Hz electric fields (like those from power lines) throughout pregnancy and until puberty. Rats exposed starting in the womb showed significantly reduced birth weight, delayed puberty, and lower growth hormone levels compared to unexposed controls. Those exposed only after birth showed minimal effects, suggesting prenatal exposure creates the most harm.
Unknown authors · 2009
Italian researchers exposed rats to both 50 Hz power line magnetic fields (at household appliance levels) and 1.8 GHz cell phone radiation, then measured blood chemistry markers like glucose and cholesterol throughout 24-hour cycles. Both types of EMF disrupted the animals' natural daily rhythms of these important metabolic markers. This suggests EMF exposure may interfere with fundamental biological timing systems that regulate metabolism.
Unknown authors · 2009
Researchers exposed bone cells and blood vessel cells to pulsed electromagnetic fields at 15 Hz frequency for 8 hours. They found that EMF exposure caused bone cells to release unknown chemical signals that dramatically increased blood vessel cell growth by 54 times. This suggests EMF can alter how cells communicate with each other, potentially affecting tissue healing and blood vessel formation.
Unknown authors · 2009
Researchers exposed cancer cells to 50 Hz electromagnetic fields (the same frequency as power lines) for up to 72 hours and found the EMF increased protein damage and activated cellular cleanup systems. The study showed that power line frequency EMF creates oxidative stress in cells, similar to free radical damage from other sources.
Unknown authors · 2009
Researchers exposed human blood immune cells to two types of electromagnetic fields: standard 100 Hz extremely low frequency (ELF) fields and therapeutic musically modulated fields (TAMMEFs). The ELF exposure increased activity of adenylate kinase, an enzyme crucial for cellular energy balance, while the therapeutic fields slightly decreased it.
Unknown authors · 2009
Researchers measured magnetic field exposure in 121 workers and tested their immune system function. Workers exposed to magnetic fields above 1 microTesla showed significantly reduced natural killer cell activity, which are crucial immune cells that fight cancer and infections. This suggests workplace EMF exposure may weaken immune defenses.
Unknown authors · 2009
French researchers exposed genetically modified mice prone to ALS (Lou Gehrig's disease) to 50 Hz magnetic fields at power line frequencies for 7 weeks before disease symptoms appeared. The study found no evidence that magnetic field exposure accelerated disease progression, affected motor function, or shortened lifespan in this animal model.
