Browse 8,655 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 114 studies (Microorganisms)
Zywicka A, Dunisławska A, Fijalkowski K · 2025
Scientists exposed bacteria to rotating magnetic fields at 5 Hz and 50 Hz frequencies for 12-72 hours and found the EMF exposure significantly increased bacterial cellulose production by up to 28%. The magnetic fields altered gene expression in the bacteria, with stronger effects at the lower 5 Hz frequency.
Miles A, Porch A, Choi H, Cripps S, Brown H, Williams C · 2025
Researchers exposed bacteria (Staphylococcus aureus) to pulsed 2.45 GHz microwaves—the same frequency used in Wi-Fi and microwave ovens—and found the bacteria grew faster and showed altered cellular chemistry compared to bacteria exposed only to heat. This demonstrates that microwave radiation can produce biological effects beyond simple heating, challenging the assumption that thermal effects are the only concern with wireless technology.
Azimzadeh M, Noorbakhshnia M · 2024
This study examined whether prenatal exposure to 900 MHz radiofrequency radiation from mobile phones affected learning, memory, and anxiety in adolescent rat offspring, and whether linalool treatment could provide protective effects. The researchers found that RF exposure during pregnancy caused anxiety-like behavior, impaired learning and memory, reduced hippocampal synaptic plasticity, and altered trace element levels (increased Fe, Cu, Mn; decreased Zn) in offspring, with linalool treatment partially mitigating these effects.
Azimzadeh M, Noorbakhshnia M · 2024
This study examined whether prenatal exposure to 900 MHz radiofrequency radiation from mobile phones impairs learning, memory, and anxiety in adolescent rat offspring, and whether linalool treatment could provide protective effects. The researchers found that radiofrequency exposure during pregnancy caused anxiety-like behavior, learning and memory impairment, decreased hippocampal synaptic plasticity, and altered trace element levels (increased Fe, Cu, Mn; decreased Zn) in offspring, with linalool treatment mitigating most of these effects.
Burgos-Molina AM et al. · 2020
Spanish researchers exposed yeast cells to power line frequency magnetic fields (50 Hz) for 21 days while the cells repaired severe DNA breaks. The magnetic field exposure increased DNA repair activity by up to 55 times compared to unexposed cells, suggesting these fields may enhance cellular repair mechanisms.
Kumar A, Kaur S, Chandel S, Singh HP, Batish DR, Kohli RK · 2020
Researchers exposed onion root cells to cell phone frequencies (900 MHz and 1800 MHz) for up to 4 hours and found significant DNA damage, chromosomal abnormalities, and disrupted cell division. The damage was measurably worse at 1800 MHz (the higher frequency) compared to 900 MHz. This plant-based study adds to evidence that wireless radiation causes biological damage at the cellular level, even at power levels similar to environmental exposure.
Said-Salman IH, Jebali FA, Yusef HH, Mustafa ME · 2019
Researchers exposed three types of disease-causing bacteria to Wi-Fi radiation at 2.4 GHz for 24-48 hours and found significant changes in bacterial behavior. The Wi-Fi exposure increased antibiotic resistance in E. coli, enhanced the ability of all three bacterial strains to form protective biofilms, and boosted their metabolic activity. These changes could make bacterial infections harder to treat with standard antibiotics.
Zheng Y, Cheng J, Dong L, Ma X, Kong Q · 2019
Researchers exposed rat brain tissue to extremely low frequency electromagnetic fields (15-100 Hz) at various intensities and durations, then measured the brain's ability to form long-term memories. They found that ELF-EMF exposure weakened the brain's memory formation process in a dose-dependent manner, with the strongest effect occurring at 15 Hz and 2 mT exposure for 5 minutes. This suggests everyday EMF exposure from power lines and electrical devices could potentially interfere with learning and memory functions.
Mercado-Sáenz S et al. · 2019
Researchers exposed yeast cells to two types of magnetic fields - continuous 50 Hz fields and pulsed 25 Hz fields - for 40 days to study aging effects. The pulsed magnetic field exposure accelerated cellular aging and altered genetic stability, while the continuous field showed no such effects. This suggests that the timing pattern of EMF exposure, not just frequency, may determine biological impact.
Jin Y et al. · 2019
This study investigated how static magnetic fields (SMF) affect root growth in Arabidopsis seedlings at different intensities and orientations. The researchers found that 600 mT magnetic fields aligned parallel to gravity (N0) enhanced root growth through increased cell division and auxin signaling, involving the PIN3 and AUX1 genes, while this effect was absent in corresponding mutants.
Said-Salman IH, Jebaii FA, Yusef HH, Moustafa ME · 2019
Researchers exposed E. coli bacteria to 2.4 GHz Wi-Fi radiation for 5 hours and found it changed the activity of 101 genes. The radiation affected bacterial functions including movement, stress response, and cell adhesion. This demonstrates that Wi-Fi frequencies can alter biological processes even in simple organisms at the cellular level.
Kthiri A, Hidouri S, Wiem T, Jeridi R, Sheehan D, Landouls A · 2019
Researchers exposed baker's yeast (Saccharomyces cerevisiae) to a strong static magnetic field of 250 millitesla for 6 to 9 hours to study biological effects. They found the magnetic field initially reduced yeast growth and survival, then triggered oxidative stress - a harmful cellular condition where damaging molecules overwhelm the cell's natural defenses. The study demonstrated that even simple organisms like yeast respond to magnetic field exposure with measurable biological changes.
Salmen SH, Alharbi SA, Faden AA, Wainwright M · 2018
Researchers exposed three types of bacteria to cell phone frequencies (900 and 1800 MHz) for 2 hours to test effects on bacterial DNA, growth, and antibiotic resistance. The study found minimal effects, with only one bacteria strain showing reduced growth at 900 MHz and no significant changes to DNA or antibiotic sensitivity.
Mouhoub RB et al. · 2017
Fadel MA, El-Gebaly RH, Mohamed SA, Abdelbacki AMM · 2017
Researchers exposed Agrobacterium tumefaciens bacteria to extremely low frequency electromagnetic waves (1.0 Hz square amplitude modulated waves) and found 90 minutes of exposure inhibited bacterial growth by 49.2%. The exposure also caused significant DNA and cellular changes, reduced the bacteria's ability to cause disease in tomato plants, and made antibiotics more effective against the organism.
Taheri M et al. · 2017
Researchers exposed two types of bacteria (Listeria and E. coli) to radiofrequency radiation from cell phones (900 MHz) and Wi-Fi routers (2.4 GHz) to see if it affected how well antibiotics worked against them. They found that RF exposure made these disease-causing bacteria more resistant to antibiotics, meaning the medications became less effective at killing them. This could have serious implications for treating infections, as it suggests our wireless devices might be contributing to the growing problem of antibiotic-resistant bacteria.
Lian HY, Lin KW, Yang C, Cai P. · 2017
Researchers exposed yeast cells to radiofrequency radiation (2.0 GHz) and extremely low frequency fields (50 Hz) to study effects on protein misfolding. They found that both types of electromagnetic fields increased the formation and spread of prions (misfolded proteins linked to neurodegenerative diseases) in a dose-dependent manner. This suggests EMF exposure may contribute to protein misfolding disorders through oxidative stress mechanisms.
Hanini R, Chatti A, Ghorbel SB, Landoulsi A. · 2017
Researchers exposed bacteria (Pseudomonas aeruginosa) to a static magnetic field of 200 mT and found that strains lacking protective antioxidant enzymes suffered significantly more cellular damage than normal strains. The magnetic field exposure increased oxidative stress markers and triggered the bacteria's natural defense systems, with weaker strains showing higher levels of cellular damage. This demonstrates that even static magnetic fields can cause biological stress that cells must actively defend against.
Zhang Z, Zhang J, Yang C-J, Lian H-Y, Yu H, Huang X-M, Cai P · 2016
Researchers exposed fruit flies to 50 Hz electromagnetic fields (3 mT, similar to levels near power lines) at normal and elevated temperatures. They found that EMF exposure combined with heat stress shortened lifespan, disrupted movement patterns, and increased cellular stress markers more severely than either factor alone. The study demonstrates that electromagnetic fields can amplify the harmful effects of other environmental stressors.
Verschaeve L, Wambacq S, Anthonissen R, Maes A · 2016
Belgian researchers tested whether 100 μT magnetic fields at 50 Hz (power line frequency) could make chemical mutagens more dangerous to DNA. Using bacteria exposed to both magnetic fields and known DNA-damaging chemicals, they found no increased genetic damage compared to chemicals alone. The magnetic fields neither caused DNA damage by themselves nor amplified the harmful effects of chemical mutagens.
Shen Y, Xia R, Jiang H, Chen Y, Hong L, Yu Y, Xu Z, Zeng Q · 2016
This study investigated how exposure to 50Hz electromagnetic fields (0.4mT) affects autophagy in Chinese Hamster Lung cells. The researchers found that EMF exposure increased autophagy markers and autophagosome formation without causing DNA damage, and that this autophagy response appeared to protect cells from apoptosis.
Tessaro LW et al · 2015
Researchers exposed four bacterial species to various electromagnetic field conditions and found that growth rates changed depending on the specific bacteria and field type. Extremely low-frequency EMFs affected all species, while one dynamic magnetic field condition (called the 'Resonator') increased growth in three species but slowed it in another. This demonstrates that EMF effects on living organisms depend on their unique biological characteristics, not just field strength.
Nasri K, Daghfous D, Landoulsi A. · 2013
Researchers exposed Salmonella bacteria to 2.45 GHz microwave radiation (the same frequency as WiFi and microwave ovens) for 40 seconds and found it significantly damaged the bacteria's cell membranes. The radiation altered the fatty acid composition of the cell walls and made the bacteria more vulnerable to antibiotics. This demonstrates that microwave radiation can cause measurable biological changes at the cellular level, even in simple organisms like bacteria.
Esmekaya MA et al. · 2013
Scientists exposed E. coli bacteria to 50 Hz magnetic fields for 24 hours. While the bacteria survived normally, the magnetic field exposure damaged their cell surfaces, creating holes and destroying membranes. This shows EMF can harm cells even when they appear healthy overall.
Esmekaya MA et al. · 2013
Scientists exposed E. coli bacteria to power line frequency magnetic fields for 24 hours. While the bacteria survived and reproduced normally, the electromagnetic exposure damaged their cell surfaces, creating holes and destroying outer membranes. This shows EMF can cause cellular damage even when organisms appear healthy.