Browse 8,700 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 543 studies in Cardiovascular
Gulturk S et al. · 2010
Researchers exposed diabetic rats to power line frequency magnetic fields for 30 days. The magnetic fields weakened the blood-brain barrier, which normally protects the brain from harmful substances. Diabetic animals with magnetic field exposure showed the worst barrier damage, potentially allowing toxins easier brain access.
Barry J. Maron et al. · 2009
Researchers tracked sudden deaths in young competitive athletes across the United States from 1980 to 2006, identifying 1,866 cases with an average age of 19 years. The study found that 56% of these deaths were due to cardiovascular disease, with rates increasing 6% per year and peaking at 76 deaths annually in 2005-2006. Most deaths occurred during physical exertion in male high school athletes, with hypertrophic cardiomyopathy being the leading cause.
Unknown authors · 2009
Swedish researchers exposed 41 volunteers to 30 minutes of 890 MHz mobile phone radiation (1.0 W/kg) and measured blood markers that indicate if the blood-brain barrier was damaged. While one marker (S100B) showed no change, transthyretin levels increased significantly 60 minutes after exposure, suggesting possible barrier disruption.
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 rats to different electromagnetic fields - 50 Hz magnetic fields at power line frequencies and 1.8 GHz radiofrequency fields similar to cell phones. They found that both types of EMF exposure disrupted the natural daily rhythms of blood chemistry markers like glucose, triglycerides, and cholesterol. This suggests EMF exposure interferes with fundamental biological timing systems.
Unknown authors · 2009
This 2009 literature review examined research on how extremely low frequency electromagnetic fields (like those from power lines) affect the cardiovascular system. The researchers found that studies on heart rate, blood pressure, and circulation have produced inconsistent results, with most attempts to replicate findings unsuccessful due to poor study design and small sample sizes.
Unknown authors · 2009
This 2009 literature review examined research on how extremely low frequency electromagnetic fields affect the human cardiovascular system. The researchers found that studies on heart rate, blood pressure, and heart rhythm changes from EMF exposure have been largely inconclusive due to poor study design and small sample sizes. The review highlighted major gaps in our understanding of how EMF exposure affects both major blood vessels and tiny capillaries in the body.
Unknown authors · 2009
Italian researchers exposed rats to both 50 Hz magnetic fields (like power lines) and 1.8 GHz electromagnetic fields (like cell phones) at various intensities. They found that both types of EMF exposure disrupted the natural daily rhythms of blood chemistry markers including glucose, triglycerides, and cholesterol. This suggests EMF exposure interferes with fundamental biological timing systems that regulate metabolism.
Unknown authors · 2009
Italian researchers exposed rats to two types of electromagnetic fields - 50 Hz magnetic fields (like power lines) and 1.8 GHz radiofrequency fields (like cell phones) - and measured blood chemistry markers throughout the day. Both EMF types disrupted the natural daily rhythms of glucose, cholesterol, and triglycerides in the animals' blood. This suggests EMF exposure can interfere with fundamental biological processes that follow our internal clocks.
Tamer A, Gündüz H, Ozyildirim S · 2009
Turkish researchers tested whether mobile phones placed directly on the chest affect heart function in 24 healthy volunteers. They measured heart rate, blood pressure, and electrical activity of the heart when phones were off, on, and ringing. The study found no significant changes in any heart measurements, suggesting that mobile phones positioned near the heart do not immediately disrupt cardiac function in healthy adults.
Nam KC, Lee JH, Noh HW, Cha EJ, Kim NH, Kim DW. · 2009
Researchers tested 18 people who claimed to be sensitive to electromagnetic fields (called EHS or electromagnetic hypersensitivity) against 19 people without such sensitivity, exposing both groups to real and fake cell phone radiation for 30 minutes. Neither group showed any measurable physical changes or symptoms from the actual radiation exposure, and the supposedly sensitive people couldn't tell the difference between real and fake exposure any better than the control group.
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.
Eltiti S et al. · 2009
Researchers exposed 88 people (including those who reported electromagnetic sensitivity) to cell tower signals for 50 minutes while testing their memory, attention, and heart rate. The study found no differences in cognitive performance or physiological measures between real exposure and fake exposure sessions. This suggests that brief exposure to typical cell tower radiation levels doesn't immediately impair thinking or basic body functions.
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.
Mousavy SJ et al. · 2009
Researchers exposed human hemoglobin (the protein in red blood cells that carries oxygen) to cell phone radiofrequency radiation at 910MHz and 940MHz frequencies. They found that the radiation altered hemoglobin's ability to carry oxygen and changed its molecular structure, with greater effects at higher radiation intensities and longer exposure times. This suggests that cell phone radiation could potentially interfere with your blood's fundamental ability to transport oxygen throughout your body.
Curcio G et al. · 2009
Italian researchers used functional near-infrared spectroscopy to measure blood flow changes in the frontal cortex (the brain region behind your forehead) while 11 volunteers were exposed to cell phone radiation for 40 minutes. They found that real phone exposure caused a gradual increase in deoxygenated blood in this brain region, while fake exposure did not. This suggests that cell phone radiation can alter brain blood flow patterns even during short-term use.
Henrykowska G et al. · 2009
Researchers exposed human blood platelets to power line frequency magnetic fields for 15 minutes. The exposure increased cellular damage markers and free radicals while reducing natural antioxidant defenses, suggesting that brief magnetic field exposure can disrupt normal cell function and potentially harm health.
Ciejka EB, Goraca A · 2009
Researchers exposed rats to 40 Hz magnetic fields (7 mT strength) for different durations and measured heart rate and antioxidant levels in blood. They found that 14 days of exposure slowed heart rate and changed the body's antioxidant defenses, with effects varying based on daily exposure time (30 vs 60 minutes). The study shows that magnetic field exposure duration affects cardiovascular function and cellular protection systems.
Jonathan A. Drezner et al. · 2008
Researchers tracked 486 cases of sudden cardiac arrest during exercise in young athletes from 2000-2006 across the United States using media reports. They found an 89% fatality rate with only 11% survival, though survival rates showed modest improvement over time. The study revealed males were five times more likely to experience cardiac arrest than females, but females had better survival rates.
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.
Rezk AY, Abdulqawi K, Mustafa RM, Abo El-Azm TM, Al-Inany H · 2008
Researchers exposed 90 pregnant women to mobile phone electromagnetic fields for 10 minutes and measured heart activity in their unborn babies and newborns. They found that even this brief exposure significantly increased fetal and newborn heart rates while decreasing cardiac output (the amount of blood the heart pumps). These cardiovascular changes occurred in both developing babies in the womb and healthy newborns after birth.
Jauchem JR. · 2008
This comprehensive review examined research from 1998 to 2006 on how radio frequency energy (the type emitted by cell phones and wireless devices) affects human cardiovascular, reproductive, and immune systems. The researchers analyzed dozens of studies and found mostly weak or inconsistent evidence of health effects, with most studies showing no significant impacts. However, some studies did report cardiovascular changes like altered heart rate patterns and immune system changes in workers exposed to radar and radio transmissions.
Huss A et al. · 2008
Researchers analyzed 59 studies on radiofrequency radiation health effects to see if funding sources influenced results. They found that studies funded exclusively by the telecommunications industry were 90% less likely to report harmful health effects compared to studies funded by public agencies or charities. This pattern held even after accounting for study quality and other factors.
Devrim E et al. · 2008
Researchers exposed female rats to 900 MHz electromagnetic radiation (the frequency used by cell phones) for 4 weeks and measured markers of cellular damage in their blood and organs. They found significant oxidative stress - essentially cellular damage from harmful molecules called free radicals - in the blood cells and kidneys of exposed rats. When some rats were given vitamin C along with the radiation exposure, it provided partial protection against this cellular damage.