Browse 8,700 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 2,998 studies (Human Studies)
Unknown authors · 2008
Researchers analyzed mobile phone records from 212 brain tumor patients and 296 healthy controls to check if people accurately remember their past phone use. Both groups made similar memory errors - underestimating call frequency by 19% while overestimating call duration by 40%. This finding suggests that memory bias likely doesn't skew mobile phone health studies significantly.
Unknown authors · 2008
French researchers used MRI-based head models to compare RF radiation absorption in children versus adults when using cell phones at multiple frequencies (900-2400 MHz). They found that children aged 5-8 years absorbed about twice as much radiation in peripheral brain tissues compared to adults, while older children showed similar absorption levels to adults. The higher absorption in younger children was attributed to their thinner skull, skin, and ear tissue.
Unknown authors · 2008
Scientists exposed human lymphocytes (white blood cells) to microwave radiation from UMTS and GSM mobile phones and found it caused long-lasting DNA damage. The radiation interfered with the cells' ability to repair broken DNA strands, with damage-indicating markers remaining elevated for extended periods. This suggests cell phone radiation can impair the body's natural DNA repair mechanisms.
Unknown authors · 2008
Researchers tested 48 healthy men performing memory tasks while exposed to GSM cell phone radiation on either the left or right side of their heads. They found that left-side phone exposure significantly slowed reaction times for right-hand responses during the first few minutes of testing. This suggests cell phone radiation can immediately affect brain function in ways that depend on which side of your head the phone touches.
Unknown authors · 2008
This 2008 scientific discussion examined risk factors for childhood leukemia, including potential environmental exposures like radiofrequency radiation. The analysis reviewed evidence linking various factors to increased leukemia risk in children. This research contributes to ongoing investigations into whether EMF exposure may play a role in childhood cancer development.
Valbonesi P et al. · 2008
Researchers exposed human placental cells to cell phone radiation (1.8 GHz GSM signals) for one hour at levels twice the current safety limit to see if it would trigger cellular stress responses or DNA damage. The radiation exposure produced no detectable effects on stress proteins or DNA integrity, unlike positive control treatments that did cause measurable damage. This suggests that short-term exposure to this type of cell phone radiation may not immediately harm these particular cells.
Unterlechner M, Sauter C, Schmid G, Zeitlhofer J. · 2008
Researchers exposed 40 healthy volunteers to UMTS mobile phone-like electromagnetic fields at 1.97 GHz while testing their attention and reaction time on computer tasks. The study found no statistically significant effects on cognitive performance, even at exposure levels up to 1.49 W/kg SAR (specific absorption rate, a measure of how much energy the body absorbs). This suggests that short-term exposure to 3G mobile phone signals does not immediately impair basic cognitive functions like attention and reaction speed.
Tokola K, Kurttio P, Salminen T, Auvinen A. · 2008
Researchers compared what 70 people said about their cell phone use in interviews versus actual usage data from phone companies. They found people consistently overestimated how much they used their phones, reporting about twice as much talk time as the records showed. This matters because most studies on cell phone health effects rely on people accurately remembering and reporting their usage, which this study shows they don't do well.
Sadetzki S et al. · 2008
Israeli researchers studied 460 people with parotid gland tumors (located near the ear) and compared their cell phone use to 1,266 healthy controls. While overall cell phone use didn't increase tumor risk, heavy users who held phones directly to their heads showed a 58% higher risk of developing tumors on the same side where they used their phone. This suggests that intensive cell phone use without hands-free devices may increase risk of tumors in glands near where the phone is held.
Riddervold IS et al. · 2008
Danish researchers tested whether 45-minute exposures to UMTS cell tower radiation (2140 MHz) affected cognitive performance and symptoms in 40 teenagers and 40 adults. They found no significant differences in cognitive test performance between real and sham exposures, though participants reported slightly more headaches during radiation exposure, which may have been due to baseline differences rather than the radiation itself.
Nieto-Hernandez R et al. · 2008
Researchers tested whether people claiming sensitivity to mobile phone signals could actually detect when phones were on versus off, then told participants their results to see if accurate feedback would change their symptoms. Even when told they couldn't actually detect phone signals, participants' sensitivity symptoms and beliefs remained unchanged six months later. The study suggests that providing scientific evidence alone may not be enough to help people with electromagnetic hypersensitivity reconsider their symptoms.
Manti L et al. · 2008
Italian researchers exposed human blood cells to cell phone radiation (1.95 GHz UMTS signal) for 24 hours, then hit them with X-rays to see if the RF exposure made the radiation damage worse. While the cell phone signals didn't increase the number of damaged cells, they did cause a small but measurable increase in the severity of chromosome damage within each affected cell at the higher exposure level (2.0 W/kg SAR). This suggests RF radiation might interfere with the cell's ability to repair DNA damage from other sources.
Lerchl A et al. · 2008
German researchers exposed hamsters to cell phone radiation 24 hours a day for 60 days at levels matching the maximum allowed for humans. While melatonin levels (the sleep hormone) remained unchanged, hamsters exposed to certain frequencies gained up to 6% more body weight than unexposed animals, suggesting the radiation may affect metabolism even at supposedly safe levels.
Lahkola A et al. · 2008
Researchers studied 1,209 people with meningiomas (a type of brain tumor) and 3,299 healthy controls across five European countries to see if mobile phone use increases tumor risk. They found that regular mobile phone users actually had a 24% lower risk of developing meningiomas compared to non-users or occasional users. The study found no increased risk regardless of how long people used phones, how many calls they made, or what type of network they used.
Kleinlogel H et al. · 2008
Researchers tested whether cell phone radiation from GSM and UMTS networks affects brain activity and cognitive performance in 15 healthy adults. They measured brain waves and reaction times during various mental tasks while participants were exposed to phone radiation at levels typical of actual phone use. The study found no significant changes in brain activity or cognitive function during EMF exposure compared to fake (sham) exposure.
Kleinlogel H et al. · 2008
Researchers exposed 15 healthy adults to electromagnetic fields from both GSM (2G) and UMTS (3G) mobile phones while measuring their brain activity with EEG and asking about their well-being. They found no significant changes in brain wave patterns or reported symptoms compared to fake (sham) exposure. The study suggests that typical mobile phone radiation levels don't produce detectable immediate effects on brain activity in healthy users.
Kim DW, Lee JH, Ji HC, Kim SC, Nam KC, Cha EJ. · 2008
Researchers exposed 18 people who claimed electromagnetic hypersensitivity (EHS) and 19 healthy controls to both real and fake cell phone radiation from a CDMA phone for 30 minutes each. They measured heart rate, breathing rate, and heart rate variability to see if the radiation caused physical changes. The study found no measurable differences in any of these body functions between real and fake exposure in either group.
Johansson A et al. · 2008
Swedish researchers exposed 15 people with atopic dermatitis (a chronic skin condition causing inflammation and itching) to 30 minutes of cell phone-like radiofrequency radiation at 1 W/kg and measured blood markers of inflammation and stress. They found no changes in any of the measured substances compared to sham exposure, suggesting that RF exposure at typical cell phone levels does not trigger inflammatory responses in people with this sensitive skin condition.
Huang TQ, Lee MS, Oh E, Zhang BT, Seo JS, Park WY. · 2008
Researchers exposed immune system T-cells to cell phone radiation at 1763 MHz for 24 hours to see if it caused cellular damage or changes in gene activity. They found no significant effects on cell growth, DNA damage, or major gene expression changes, though two immune-related genes showed minor decreases. This suggests that 24-hour exposure to this specific frequency at high power levels did not cause detectable harm to these immune cells.
Franzellitti S, Valbonesi P, Contin A, Biondi C, Fabbri E. · 2008
Researchers exposed human placental cells to 1.8 GHz mobile phone radiation for up to 24 hours to study stress protein responses. While the cells showed no changes in stress proteins at the protein level, they found subtle changes in genetic activity (mRNA) that varied depending on the type of signal modulation used. This suggests that cellular responses to RF radiation may be more complex and nuanced than previously detected.
Falzone N et al. · 2008
Researchers exposed human sperm samples to cell phone radiation at two different intensities to see if it affected sperm health and movement. They found no effects at the lower intensity (similar to normal phone use), but at the higher intensity, sperm swimming patterns became impaired over time. This suggests that stronger EMF exposures may harm male fertility, though typical phone use levels showed no immediate damage.
Djeridane Y, Touitou Y, de Seze R. · 2008
French researchers exposed 20 healthy men to 900 MHz cell phone radiation for 2 hours daily over 4 weeks and measured their hormone levels around the clock. They found temporary decreases in growth hormone (28%) and cortisol (12%) during exposure, but these changes disappeared after stopping exposure and all hormone levels stayed within normal ranges. The study suggests that typical cell phone use may cause minor, reversible changes to certain hormones but doesn't disrupt the body's overall hormone system.
Dasdag S, Akdag MZ, Ulukaya E, Uzunlar AK, Yegin D. · 2008
Researchers exposed male rats to 900 MHz cell phone radiation for 2 hours daily over 10 months to see if it would trigger cell death (apoptosis) in sperm-producing cells. They found no significant increase in cell death markers in the testes of exposed rats compared to unexposed controls. This suggests that this level of cell phone radiation exposure may not directly damage sperm production through cell death pathways.
Cinel C, Russo R, Boldini A, Fox E. · 2008
Researchers exposed 496 volunteers to mobile phone radiation in a controlled, double-blind study to see if it caused symptoms like headaches or dizziness. They found only one inconsistent effect - dizziness in one group that wasn't replicated in the other groups. The study concluded there's no consistent evidence that mobile phone radiation causes immediate physical symptoms.
Bamiou DE, Ceranic B, Cox R, Watt H, Chadwick P, Luxon LM. · 2008
Researchers tested whether 30-minute mobile phone exposures affect inner ear function in 9 people who reported symptoms from phone use and 21 healthy controls. Using precise hearing and balance tests before and after exposure to 882 MHz radiation at typical phone power levels, they found no measurable changes in either group. This suggests that short-term mobile phone use doesn't immediately impair the ear's delicate hearing or balance mechanisms.