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.
Brescia F et al. · 2009
Researchers exposed human immune cells to 3G cell phone radiation at levels similar to what phones emit, testing whether this radiation creates harmful reactive oxygen species (unstable molecules that can damage cells). Even after 24 hours of exposure, the radiation produced no increase in these damaging molecules and didn't harm cell survival. The study also tested whether radiation might amplify damage from iron compounds, but found no such interaction.
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.
Zareen N, Khan MY, Ali Minhas L · 2009
Researchers exposed developing chicken embryos to 1800 MHz radiofrequency radiation from a mobile phone during critical stages of eye development. They found that the radiation disrupted normal retinal development, causing both growth abnormalities and changes in pigmentation patterns depending on when during development the exposure occurred. This suggests that EMF radiation can interfere with the precise developmental processes needed for proper eye formation.
Cao Y, Zhang W, Lu MX, Xu Q, Meng QQ, Nie JH, Tong J. · 2009
Researchers exposed brain cancer cells to 900-MHz microwave radiation (the same frequency used by many cell phones) before treating them with gamma rays. They found that the microwave exposure made the cells more vulnerable to radiation damage, increasing cell death and creating more harmful reactive oxygen species. This suggests that EMF exposure might amplify the harmful effects of other types of radiation.
de Tommaso M et al. · 2009
Researchers tested how 900 MHz cell phone signals affect brain electrical activity by measuring a specific brainwave pattern called contingent negative variation (CNV) in 10 volunteers. They found that both active phones and sham phones (with internal circuits running but no RF emission) reduced brain arousal and expectation responses compared to phones that were completely off. The study suggests that both the GSM radio signal and the low-frequency magnetic fields from the phone's battery and circuits can alter normal brain function.
Zhijian C et al. · 2009
Researchers exposed human white blood cells to cell phone radiation at safety limits for 24 hours, then tested DNA repair after X-ray damage. The radiation didn't cause DNA damage or interfere with natural repair processes, suggesting current safety limits may not impair cellular DNA repair.
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.
Moisescu MG, Leveque P, Verjus MA, Kovacs E, Mir LM. · 2009
French researchers exposed mouse cells to 900 MHz cell phone radiation and found it accelerated endocytosis, the process cells use to absorb nutrients and other substances. This suggests cell phone signals can alter fundamental cellular functions at the molecular level, potentially affecting how cells process essential materials.
Acar GO, Yener HM, Savrun FK, Kalkan T, Bayrak I, Enver O. · 2009
Researchers exposed rabbits to cell phone radiation (1900 MHz) for 25 minutes and measured temperature changes and nerve function in facial tissues. They found that the radiation increased tissue temperature by 0.39°C and temporarily impaired facial nerve function, with both effects returning to normal 25 minutes after exposure ended.
Amoako JK, Fletcher JJ, Darko EO. · 2009
Researchers measured radiofrequency radiation levels around 50 cell phone towers in Ghana to assess public exposure. They found radiation levels that were 20 times higher than typically measured in similar studies elsewhere, though still within international safety guidelines. The study highlights significant variation in exposure levels around cell towers and raises concerns about increasing radiation as mobile phone usage grows.
Söderqvist F, Carlberg M, Hansson Mild K, Hardell L · 2009
Researchers exposed 41 volunteers to cell phone radiation for 30 minutes and measured blood markers that indicate whether the blood-brain barrier (the protective shield around your brain) had been compromised. They found that one marker called transthyretin increased significantly after exposure, suggesting the radiation may have affected this critical barrier. This is concerning because a compromised blood-brain barrier could allow harmful substances to enter the brain more easily.
Trosić I, Pavicić I. · 2009
Researchers exposed hamster cells to mobile phone radiation (935 MHz) at low power levels for 1-3 hours and tracked their growth over four days. They found that cells exposed for three hours showed reduced growth 72 hours later and immediate damage to their internal scaffolding structures called microtubules. This suggests that even brief exposures to cell phone-level radiation can disrupt normal cellular function and growth patterns.
Kwon MS et al. · 2009
Finnish researchers tested whether GSM mobile phone radiation affects the brain's ability to automatically detect changes in sounds, a key function for processing speech and music. They measured brain responses in 17 healthy adults while exposing them to 902 MHz radiation at levels typical of cell phone use (SAR up to 1.21 W/kg). The study found no changes in the brain's automatic sound processing abilities during EMF exposure.
Kwon MS et al. · 2009
Researchers tested whether cell phone radiation affects the brain's ability to automatically detect changes in sounds by measuring brain waves in 17 healthy adults while a GSM phone was placed next to their ear. They found no differences in brain responses whether the phone was on or off, suggesting that acute exposure to cell phone radiation doesn't impair this basic auditory processing function. This study adds to research examining how electromagnetic fields might affect brain function during everyday phone use.
Finnie JW, Chidlow G, Blumbergs PC, Manavis J, Cai Z.. · 2009
Researchers exposed pregnant mice to cell phone radiation (900 MHz) for one hour daily throughout pregnancy to see if it caused stress in developing fetal brains. They measured heat shock proteins, which are biological markers that cells produce when under stress. The study found no evidence that the radiation caused stress responses in the fetal brain tissue, suggesting no detectable harm at the exposure levels tested.
Finnie JW, Blumbergs PC, Cai Z, Manavis J · 2009
Researchers exposed mice to cell phone radiation at 900 MHz for either one hour or two years to see if it would increase a brain protein called aquaporin-4, which rises when the blood-brain barrier becomes leaky. They found no increase in this protein after either short or long-term exposure, suggesting that cell phone radiation at this level doesn't make the blood-brain barrier more permeable.
Finnie JW, Blumbergs PC, Cai Z, Manavis J. · 2009
Researchers exposed mice to cell phone radiation (900 MHz) for either one hour or repeatedly over two years to see if it would damage the blood-brain barrier - the protective shield that keeps toxins out of the brain. They looked for increased levels of aquaporin-4, a protein that indicates barrier damage. The study found no changes in this protein after either short-term or long-term exposure, suggesting the blood-brain barrier remained intact.
Budak GG et al. · 2009
Researchers exposed pregnant and non-pregnant rabbits to cell phone radiation (1800 MHz GSM) for 15 minutes daily over a week, then measured their inner ear function using sensitive hearing tests. They found that non-pregnant rabbits showed significant decreases in cochlear function (the part of the ear that converts sound to nerve signals), while pregnant rabbits were largely protected from these effects. This suggests cell phone radiation can damage hearing mechanisms, but pregnancy hormones may offer some protection.
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.
Budak GG, Muluk NB, Budak B, Oztürk GG, Apan A, Seyhan N. · 2009
Researchers exposed infant and adult female rabbits to cell phone radiation (1800 MHz GSM) for 15 minutes daily over 7 days and measured their hearing function using distortion product otoacoustic emissions (DPOAE), which test how well the inner ear responds to sound. Adult rabbits showed significant hearing damage across most frequencies tested, while infant rabbits actually showed some improved responses at certain frequencies. This suggests that developing ears may be more resilient to radiofrequency damage than mature ones, possibly due to higher water content in young ear structures.
Lipping T et al. · 2009
Researchers exposed anesthetized pigs to GSM mobile phone radiation (890 MHz) to test whether radio frequency signals could trigger brain activity changes detectable in EEG measurements. The study used a highly sensitive testing method where anesthetized animals show exaggerated responses to even minor stimuli. Despite exposure levels of 31 W/kg (much higher than typical phone use), no changes in brain electrical activity were observed, though the animals did experience increased body temperature and heart rate.
Lipping T et al. · 2009
Researchers exposed eleven anesthetized pigs to mobile phone radiation at 890 MHz to test whether radiofrequency signals could trigger brain activity changes in a highly sensitive state. They found no correlation between RF exposure and brain wave patterns, though the animals experienced significant temperature increases (1.6°C) and elevated heart rates during the 10-minute exposures. This suggests that while RF radiation can cause heating effects, it may not directly stimulate brain activity even under conditions of heightened neural sensitivity.
Cao Y, Xu Q, Lu MX, Jin ZD, DU HB, Li JX, Nie JH, Tong J. · 2009
Chinese researchers exposed mice to low-level 900 MHz microwave radiation (the same frequency used by cell phones) before subjecting them to high-dose gamma radiation that typically damages blood-forming cells. They found that the microwave pre-exposure actually protected the mice, improving their survival rates and helping maintain healthy blood cell production. This suggests that certain levels of microwave radiation might stimulate protective biological responses rather than cause harm.
Del Vecchio G et al. · 2009
Italian researchers exposed developing brain cells to cell phone radiation at levels similar to what phones emit (1 W/kg SAR at 900 MHz). They found that this radiation significantly reduced the growth of neurites - the branch-like extensions that neurons use to connect and communicate with each other. This suggests that cell phone radiation may interfere with normal brain cell development and connection formation.
