Browse 8,700 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 742 studies in Cancer & Tumors
Wartenberg M et al. · 2008
German researchers exposed oral cancer cells to weak electric fields (2-16 volts per meter) for 24 hours. The fields triggered cancer cell death by generating harmful molecules called reactive oxygen species that damaged the cells' internal systems, suggesting potential therapeutic applications for treating cancer.
Mazor R et al. · 2008
Researchers exposed human blood cells to 800 MHz radiofrequency radiation (similar to cell phone frequencies) for 72 hours at levels close to current safety limits. They found significant increases in chromosome abnormalities called aneuploidy, where cells had the wrong number of chromosomes. This type of genetic damage can contribute to cancer development and other health problems.
Unknown authors · 2007
A massive 15-country study of over 400,000 nuclear workers found significant increases in cancer deaths linked to low-dose ionizing radiation exposure over decades. Workers showed a 97% increase in cancer mortality per unit of radiation dose, with lung cancer and multiple myeloma showing the strongest associations.
Unknown authors · 2007
Scientists developed a mathematical model showing how magnetic nanoparticles inside cells could increase DNA damage and cancer risk by generating harmful free radicals. The model suggests these particles may explain why childhood leukemia rates are elevated, particularly in very young children whose cells are rapidly dividing.
Unknown authors · 2007
This 2007 global cancer analysis examined worldwide cancer patterns, finding that 56% of new cases and 64% of deaths occurred in developing countries. The study revealed breast cancer as the leading cause of female cancer deaths globally, while lung cancer dominated male cancer mortality at 23% of deaths.
Unknown authors · 2007
Iranian researchers studied 60 children with acute leukemia and 59 healthy children, examining their proximity to high-voltage power lines (123-400 kilovolts). Children living within 500 meters of these lines showed 8.67 times higher odds of developing leukemia. The study found 23.5% of leukemia patients lived near high-voltage lines compared to only 3.3% of healthy children.
Unknown authors · 2007
Researchers investigated 196 UK homes to identify sources of elevated power frequency magnetic field exposure linked to childhood leukemia risk. They found that 77% of exposures above 0.2 microT came from low-voltage electrical sources within homes (like wiring problems), while high-voltage power lines accounted for only 23%. This challenges the common focus on overhead power lines as the primary concern.
Unknown authors · 2007
UK health officials analyzed the scientific evidence linking power line magnetic fields to childhood leukemia and concluded that low-cost precautionary measures are justified despite scientific uncertainty. Using established criteria for evaluating health risks, they found that while the evidence isn't definitive, the consistent association across multiple studies warrants protective action.
Unknown authors · 2007
Researchers compared CT scans and MRI scans for diagnosing blood clots in the lungs. While MRI showed 94.7% accuracy without using ionizing radiation, CT scans remained the preferred method due to faster imaging and better performance in critically ill patients.
Unknown authors · 2007
Researchers in Northern England studied 4,723 children with cancer and found that those whose fathers worked in jobs with electromagnetic field or radiation exposure had a 31% higher risk of leukemia. The risk was particularly elevated (81% higher) for boys under age 6, while girls showed no significant increase.
Unknown authors · 2007
Researchers studied 854 people diagnosed with blood cancers in Tasmania between 1972-1980, comparing them to matched controls based on their proximity to high-voltage power lines. Living within 300 meters of power lines increased cancer risk, with children under 5 showing a fivefold higher risk that persisted into adulthood.
Unknown authors · 2007
Israeli researchers studied 460 parotid gland tumor patients and 1,266 controls to examine whether cell phone use increases tumor risk in the salivary glands near the ear. While overall cell phone use showed no increased risk, heavy users who held phones directly to their ear (without hands-free devices) had a 58% higher risk of developing tumors on the same side as their phone use. The study found a clear dose-response relationship, meaning more calls and longer call times correlated with higher tumor risk.
Sommer AM, Bitz AK, Streckert J, Hansen VW, Lerchl A · 2007
German researchers exposed 320 mice to 3G (UMTS) cell phone signals 24 hours a day for their entire lives to see if the radiation would increase lymphoma rates. The mice were genetically predisposed to develop this blood cancer, making them ideal test subjects. After monitoring the animals for 43 weeks, researchers found no difference in cancer rates, survival times, or disease severity between exposed and unexposed groups.
Smith P, Kuster N, Ebert S, Chevalier HJ · 2007
Researchers exposed 1,170 rats to cell phone radiation (GSM and DCS signals) for 2 hours daily, 5 days a week for up to 2 years to test whether this exposure causes cancer. They found no increase in tumors or cancer rates compared to unexposed control rats, even at the highest radiation levels tested. This large, long-term study suggests that chronic exposure to these specific wireless signals at the tested levels does not increase cancer risk in rats.
Shirai T et al. · 2007
Researchers exposed young rats to cell phone-like radiation (1.95 GHz W-CDMA signals) for 2 years to see if it would promote brain tumor development in animals already given a cancer-causing chemical. The study found no significant increase in brain tumors from the radiation exposure at levels of 0.67 and 2.0 W/kg SAR. This suggests that chronic exposure to this type of cell phone radiation does not accelerate brain tumor formation in this animal model.
Saran A et al. · 2007
Researchers exposed newborn mice genetically engineered to be highly susceptible to tumors to cell phone radiation (900 MHz GSM) for 30 minutes twice daily over 5 days. The exposed mice showed no increased cancer risk, no shortened lifespan, and no acceleration of tumor development compared to unexposed mice. This study suggests that brief early-life exposure to cell phone radiation at typical levels may not promote cancer development, even in genetically vulnerable subjects.
Oberto G et al. · 2007
Researchers exposed genetically modified mice to pulsed 900 MHz radiofrequency radiation (similar to cell phone signals) for 18 months to test whether it could cause cancer. Despite using exposure levels up to three times higher than a previous study that found increased lymphomas, this larger study found no increase in tumors or cancer at any of the tested exposure levels. This contradicts earlier research suggesting cell phone radiation might promote cancer development.
Klaeboe L, Blaasaas KG, Tynes T. · 2007
Norwegian researchers studied 541 brain tumor patients and 358 healthy controls to see if mobile phone use increased risk of brain tumors (gliomas, meningiomas, and acoustic neuromas). They found that regular mobile phone users actually had lower odds of developing these tumors compared to non-users, with no increasing risk even after 6+ years of use. This suggests mobile phones don't increase brain tumor risk, at least for the exposure levels and time periods studied.
Kan P, Simonsen SE, Lyon JL, Kestle JR. · 2007
Researchers analyzed nine case-control studies involving over 17,000 people to examine whether cell phone use increases brain tumor risk. They found no overall increased risk for typical users, but discovered a 25% higher risk among people who used cell phones for 10 years or longer. This suggests that while short-term use appears relatively safe, long-term exposure may pose health concerns that require further investigation.
Juutilainen J, Heikkinen P, Soikkeli H, Mäki-Paakkanen J. · 2007
Finnish researchers exposed mice to cell phone radiation for over a year to test whether it damages DNA by looking for micronuclei (broken chromosome fragments) in blood cells. They found no DNA damage from radiofrequency exposure at levels similar to what humans experience from mobile phones. This was true across different phone technologies (analog and digital), exposure durations (52-78 weeks), and mouse strains.
Hardell L et al. · 2007
Swedish researchers studied 888 men with testicular cancer and 870 healthy controls to see if using cell phones or cordless phones increased cancer risk. They found no meaningful association between phone use and either type of testicular cancer (seminoma or non-seminoma), with risk estimates hovering around normal levels regardless of phone type. The study also found no connection between where men kept their phones (like trouser pockets) and cancer development.
Roosli M, Michel G, Kuehni CE, Spoerri A · 2007
Swiss researchers analyzed brain tumor death rates from 1969 to 2002 to see if mobile phone introduction in 1987 led to increased brain cancer deaths. They found that brain tumor mortality rates remained stable after mobile phones were introduced, with no increase in younger age groups who used phones most frequently. However, the study acknowledges it cannot detect small risks or effects that take decades to develop.
Lahkola A et al. · 2007
Researchers studied 1,522 brain cancer patients and 3,301 healthy people across five European countries to see if mobile phone use increases glioma risk. Overall, they found no increased cancer risk from regular phone use, but discovered a 39% higher risk when people used phones for more than 10 years on the same side of their head where the tumor developed. This suggests that long-term, localized exposure to the brain may pose risks that deserve further investigation.
Hours M et al. · 2007
French researchers studied 596 brain tumor patients and matched controls to investigate whether cell phone use increases cancer risk. They found no statistically significant increased risk for gliomas, meningiomas, or acoustic neuromas among regular cell phone users. However, the heaviest users showed a concerning trend toward higher glioma risk, though the study lacked sufficient statistical power to draw definitive conclusions.
Hardell LO et al. · 2007
Researchers analyzed 16 studies to examine brain tumor risk in people who used cell phones for 10 years or longer. They found that long-term users had double the risk of developing acoustic neuroma (a benign brain tumor) and glioma (a malignant brain tumor), with the highest risk occurring on the same side of the head where people typically held their phone. This suggests that extended cell phone use over a decade may increase brain tumor risk.