Cetin H et al. · 2014
Researchers exposed pregnant rats and their offspring to mobile phone radiation (900 and 1800 MHz) for 60 minutes daily, then measured oxidative stress markers in the brain and liver. The study found that EMF exposure decreased protective antioxidants in the liver while increasing oxidative stress markers in the brain, particularly affecting selenium levels. This suggests that mobile phone radiation can overwhelm the body's natural antioxidant defenses during critical developmental periods.
Redmayne M · 2013
Researchers surveyed 373 New Zealand adolescents (average age 12.3 years) about their cellphone and cordless phone use patterns. They found that 90% used both devices, with some already logging enough cordless phone hours to match the highest usage levels in major brain tumor studies. The study projected that if usage continued at current rates, many teens would reach exposure levels associated with increased brain tumor risk by their mid-teens.
Guxens M et al. · 2013
Researchers followed 2,618 Dutch children to see if mothers' cell phone and cordless phone use during pregnancy affected their children's behavior at age 5. They found no significant link between prenatal phone exposure and behavioral problems, whether reported by teachers or mothers. The study suggests that maternal phone use during pregnancy does not increase the likelihood of behavioral issues in young children.
Furtado-Filho OV et al. · 2013
Brazilian researchers exposed young rats to 950 MHz radiofrequency radiation (similar to older cell phone frequencies) for 30 minutes daily from birth through 30 days of age. While the study found no oxidative stress or DNA damage in most age groups, 30-day-old rats showed genetic damage in liver cells, and newborns had altered fatty acid levels and reduced antioxidant enzyme production.
Aït-Aïssa S et al. · 2013
French researchers exposed pregnant rats and their offspring to WiFi signals (2.4 GHz) from pregnancy through 5 weeks after birth, then examined their brains for signs of cellular stress and damage. They found no differences in stress markers between WiFi-exposed and unexposed rat pups, even at exposure levels up to 4 W/kg. The study suggests that WiFi exposure during critical developmental periods may not cause detectable brain damage in young rats.
Guxens M et al. · 2013
Dutch researchers studied whether pregnant mothers using cell phones or cordless phones would have children with more behavioral problems at age 5. They followed 2,618 children and found no significant increase in behavioral issues among children whose mothers used phones during pregnancy, even with heavy phone use of 5 or more calls per day. The study suggests that prenatal phone exposure doesn't appear to cause behavioral problems in young children.
Aït-Aïssa S et al. · 2013
French researchers exposed pregnant rats and their newborns to WiFi signals (2450 MHz) for 2 hours daily during pregnancy and early life, then examined brain tissue for signs of stress and damage. They found no differences in stress markers or heat-shock proteins between exposed and unexposed rats at any of the tested exposure levels. The study suggests that WiFi exposure during critical developmental periods may not cause detectable brain damage in rats.
Hardell L, Carlberg M, Söderqvist F, Mild KH. · 2013
Swedish researchers studied 593 people with malignant brain tumors and compared their cell phone and cordless phone use to healthy controls. They found that long-term users (15+ years) had roughly double the risk of developing brain tumors, with the highest risk (3.3 times higher) seen in people who used older analog phones for over 25 years. The risk was particularly elevated when people held phones on the same side of the head where tumors developed.
de Vocht F, Hannam K, Buchan I. · 2013
Researchers analyzed cancer data from 165 countries to explore potential environmental risk factors for brain and nervous system cancers. They found that countries with higher rates of mobile phone subscriptions consistently showed higher rates of brain cancer, with the data suggesting a latency period (time between exposure and disease) of at least 11-12 years, possibly over 20 years. While this type of population-level analysis cannot prove causation, it provides important signals that warrant further investigation into the relationship between wireless technology and brain cancer.
Byun YH et al. · 2013
Researchers followed 2,422 Korean children for two years to study whether mobile phone use affects ADHD symptoms. They found that children who used mobile phones for voice calls showed increased ADHD symptoms, but only when they also had high levels of lead in their blood. This suggests that exposure to both lead and phone radiation together may worsen attention problems in children.
Behari J, Nirala JP. · 2013
Researchers tested how 3G mobile phone radiation (1718.5 MHz) affects brain tissue using a laboratory phantom (artificial brain material) designed to mimic a small rat brain. They found that the amount of radiation absorbed (called SAR) varied significantly depending on the phone's angle and position, with some measurements showing higher absorption than expected. The study reveals important flaws in how we currently measure radiation exposure from mobile devices.
Sudan M, Kheifets L, Arah OA, Olsen J. · 2013
Danish researchers followed over 52,000 children from birth to age 7, tracking their cell phone use and hearing ability. They found children who used cell phones had a 21-23% higher risk of hearing loss compared to non-users. This is the first large-scale study to examine whether cell phone radiation might affect children's hearing, though the researchers noted the findings need confirmation from other studies.
Redmayne M, Smith E, and Abramson MJ · 2013
New Zealand researchers studied 400 teenagers' wireless phone use and health symptoms. Students making over 6 calls weekly had 2.4 times higher headache risk, while wireless headset users showed doubled depression and sleep problems. These findings suggest teen phone habits may impact wellbeing.
Vecsei Z, Csathó A, Thuróczy G, Hernádi I. · 2013
Researchers exposed 20 healthy adults to cell phone radiation for 30 minutes, then tested pain sensitivity using heat on their fingers. The radiation reduced the body's normal ability to adapt to repeated pain, suggesting cell phone signals can interfere with nervous system pain processing.
Balassa T et al. · 2013
Researchers exposed developing rats to 50 Hz magnetic fields (the same frequency as power lines) during critical brain development periods and found lasting changes in brain function. The exposed animals showed altered electrical activity in brain regions responsible for learning and memory, with some changes persisting weeks after exposure ended. This suggests that magnetic field exposure during early development may affect how the brain processes information later in life.
Balassa T et al. · 2013
Researchers exposed pregnant and newborn rats to 50 Hz magnetic fields (household electricity frequency) during brain development. The exposure altered how brain cells communicate, increasing electrical activity but impairing the brain's ability to form new memories and connections during critical developmental periods.
Vecsei Z, Csathó A, Thuróczy G, Hernádi I · 2013
Researchers exposed 20 young adults to cell phone-like radiation (UMTS signals) for 30 minutes while testing their sensitivity to heat-induced pain on their fingertips. They found that radiation exposure altered how the nervous system processes repeated painful stimuli, reducing the normal desensitization that occurs with repeated pain. This suggests that cell phone radiation can influence how our nervous system responds to pain signals.
Ros-Llor I et al. · 2012
Researchers examined DNA damage in mouth cells from 50 mobile phone users by comparing cells from the side of the face where they held their phone versus the opposite side. They found no differences in genetic damage markers (called micronuclei) between the phone side and non-phone side, regardless of how long people had been using mobile phones. This suggests that typical mobile phone use may not cause detectable DNA damage in oral tissues.
Poulletier de Gannes F et al. · 2012
French researchers exposed pregnant rats to Wi-Fi signals (2.45 GHz) for 2 hours daily during pregnancy to test whether this radiation could harm developing babies. They found no birth defects, developmental problems, or other harmful effects in the rat pups, even at the highest exposure level tested (4 W/kg). This study suggests that Wi-Fi exposure during pregnancy may not cause developmental harm at levels tested.
Deltour I et al. · 2012
Researchers analyzed brain tumor rates across Nordic countries from 1979-2008 to see if mobile phone use caused increases in glioma (a type of brain cancer). Despite widespread mobile phone adoption during this period, they found no significant increase in brain tumor rates that would match the elevated risks reported in some earlier studies. The findings suggest that either mobile phones pose lower cancer risks than some studies indicated, or that cancer development takes longer than the timeframes studied so far.
Sudan M, Kheifets L, Arah O, Olsen J, Zeltzer L. · 2012
Researchers tracked over 52,000 Danish children from pregnancy through age seven to examine whether cell phone exposure increases headache risk. Children exposed to cell phones both before birth (through their mothers' use) and after birth had 30% higher odds of migraines and 32% higher odds of headache symptoms compared to unexposed children. While the study cannot prove cell phones directly cause headaches, the large population size and consistent pattern suggest a potential connection worth taking seriously.
Li CY, Liu CC, Chang YH, Chou LP, Ko MC. · 2012
Taiwanese researchers analyzed cancer rates in over 2,600 children living near cell phone towers, comparing them to nearly 78,000 healthy children. They found that children living in areas with higher radiofrequency radiation from cell towers had a 13% increased risk of developing cancer overall. While the increased risk for specific cancers like leukemia and brain tumors wasn't statistically significant, the pattern suggests concern about long-term exposure to tower radiation.
Divan HA, Kheifets L, Obel C, Olsen J. · 2012
Danish researchers studied nearly 29,000 children to see if their mothers' cell phone use during pregnancy and the children's own early phone use affected behavior at age 7. They found that children exposed to cell phones both before birth and in early childhood were 50% more likely to have behavioral problems compared to unexposed children. This large study confirms earlier findings that cell phone radiation may interfere with normal brain development during critical early years.
Divan HA, Kheifets L, Obel C, Olsen J · 2012
Researchers tracked 29,000 children to age 7 and found those exposed to cell phones both during pregnancy and after birth had 50% higher odds of behavioral problems like hyperactivity. This suggests wireless radiation during critical development periods may affect children's brain development.
Tsybulin O, Sidorik E, Kyrylenko S, Henshel D, Yakymenko I. · 2012
Japanese quail eggs exposed to 900 MHz cell phone radiation showed accelerated development and increased survival, but also higher oxidative stress in brain and liver tissue. The radiation was 500 times weaker than typical phone emissions, suggesting biological effects occur at very low exposure levels.
