8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.
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Cancer & Tumors

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Key Finding: 79% of 742 studies on cancer & tumors found biological effects from EMF exposure.

Of 742 studies examining cancer & tumors, 79% found measurable biological effects from EMF exposure.

Lowest Documented Effect

Research found effects on cancer & tumors at exposures as low as:

Study Exposure Level in ContextStudy Exposure Level in Context0.00002, 0.0002, 0.008Extreme Concern - 1,000 uW/m2FCC Limit - 10M uW/m2Effects observed in the No Concern rangeFCC limit is 500,000,000,000x higher than this level

Research Overview

  • -# Cancer & Tumors: What the Research Shows Of the 149 studies examining the relationship between electromagnetic field (EMF) exposure and cancer risk, 130 studies-87.2 percent-have documented measurable biological effects or increased cancer incidence.
  • -This isn't a marginal finding.
  • -The science demonstrates a consistent pattern across multiple research institutions and countries, including studies from the Karolinska Institute, the National Institutes of Health, and independent research centers worldwide.

# Cancer & Tumors: What the Research Shows Of the 149 studies examining the relationship between electromagnetic field (EMF) exposure and cancer risk, 130 studies-87.2 percent-have documented measurable biological effects or increased cancer incidence. This isn't a marginal finding. The science demonstrates a consistent pattern across multiple research institutions and countries, including studies from the Karolinska Institute, the National Institutes of Health, and independent research centers worldwide.

What makes this particularly significant is that these effects appear dose-dependent and persist in cell offspring weeks after the initial exposure.

The research presented in this section demonstrates significant evidence that extremely low frequency electromagnetic field (ELF-EMF) exposures can cause DNA damage and genetic alterations relevant to leukemia development.

Source: BioInitiative Working Group. BioInitiative Report: A Rationale for Biologically-based Public Exposure Standards for Electromagnetic Radiation. Edited by Cindy Sage and David O. Carpenter, BioInitiative, 2012, updated 2020. www.bioinitiative.org

Showing 742 studies

Inhibition of mitochondrial NADH:ubiquinone oxidoreductase by spinning oscillating magnetic fields causes toxicity in cancer cells. FEBS Lett

Hambarde S, Pandey A, Baskin DS, Helekar SA · 2026

Researchers developed a new magnetic device that uses spinning oscillating magnetic fields to selectively kill aggressive brain cancer cells while leaving healthy brain cells unharmed. The device works by damaging the energy-producing parts of cancer cells, causing them to die through a natural cell death process. This represents a potentially safer approach to treating deadly brain cancers like glioblastoma.

The International Collaborative Animal Study of The Carcinogenicity and Genotoxicity of Mobile Phone Radiofrequency Radiation: The Korean Study

Kim HS et al. · 2026

Korean researchers exposed male rats to CDMA-modulated 900 MHz radiofrequency radiation at 4 W/kg (the international safety guideline level) for nearly their entire lifespans. They found no increased cancer rates, no genetic damage, and no effects on heart, brain, or adrenal glands. This was part of a coordinated study with Japan to verify earlier National Toxicology Program findings.

Such non-linear responses have been described previously for a range of RF-EMF induced outcomes (Lai and Levitt 2022; Weller et al

Rather than suggesting that there are ‘no consistent effects et al. · 2025

This appears to be a review article examining non-linear responses of blood cells to radiofrequency electromagnetic field (RF-EMF) exposure at different waveforms, intensities, and durations. The authors argue that variable effects across studies should be interpreted as evidence of differential cellular responses rather than as lack of consistent effects.

(2025) Radiofrequency radiation from mobile phones and the risk of breast cancer: A multicenter case–control study with an additional suspected comparison group

Tahmasebi et al · 2025

Iranian researchers studied 226 women to examine whether mobile phone use increases breast cancer risk. They found women who talked on phones for more than 60 minutes daily had 3.5 times higher odds of confirmed breast cancer compared to those using phones less than 10 minutes daily. The study also included a 'suspected' group of women advised to get mammograms, who showed even higher associations with phone use.

Effects of radiofrequency electromagnetic field exposure on cancer in laboratory animal studies, a systematic review

Mevissen et al · 2025

This comprehensive 2025 review analyzed 52 animal studies to evaluate whether radiofrequency electromagnetic field exposure causes cancer. Researchers found high-certainty evidence for increased brain tumors (gliomas) and heart tumors (schwannomas) in male rats, the same tumor types previously linked to cell phone use in humans. The findings strengthen concerns about RF-EMF carcinogenicity that led to its classification as a possible human carcinogen in 2011.

Intermittent ELF-MF exposure effectively ameliorates pathologic features associated with adult AD mice

Geng D, Liu A, Yan Y, Zheng W · 2025

This study investigated whether intermittent versus continuous exposure to 40 Hz, 10mT extremely low frequency magnetic fields (ELF-MF) could improve cognitive and neurological outcomes in adult and aged Alzheimer's disease mice. The researchers found that intermittent ELF-MF stimulation was more effective in adult AD mice for improving spatial working memory and enhancing theta/gamma band neural oscillations in the hippocampus, while continuous stimulation showed better results in aged mice, and ELF-MF exposure reduced abnormal accumulation of amyloid-beta and dynamin-related protein markers.

Pulsed Electromagnetic Field Therapy Alters the Genomic Profile of Bladder Cancer Cell Line HT-1197

Sandberg M et al. · 2025

Researchers exposed bladder cancer cells (HT-1197) to pulsed electromagnetic field (PEMF) therapy for one hour daily over five days. The treated cancer cells grew significantly slower than untreated cells and showed major changes in gene expression patterns. This suggests PEMF therapy might offer a less invasive treatment approach for bladder cancer patients.

Investigating the expression changes of several key genes in prostate cancer cells under exposure to the ELF pulsed electromagnetic fields

Bahari A, Baharara J, Nejad Shahrokhabadi K, Lotfi M · 2025

Researchers exposed prostate cancer cells to extremely low-frequency pulsed electromagnetic fields at 22.6 and 35 mT intensities. The treatment killed cancer cells and activated genes that suppress tumors while reducing genes that promote cancer growth. This suggests EMF therapy could potentially help treat prostate cancer with fewer side effects than traditional treatments.

Relationship between radiofrequency-electromagnetic radiation from cellular phones and brain tumor: meta-analyses using various proxies for RF-EMR exposure-outcome assessment

Moon et al · 2024

Korean researchers analyzed 24 studies involving cell phone use and brain tumors, finding that people who used phones on the same side of their head where tumors developed had 40% higher odds of brain cancer. The risk increased with longer use, reaching 59% higher odds for those with over 896 hours of cumulative phone time.

Polyvinyl Alcohol Capped Silver Nanostructures for Fortified Apoptotic Potential Against Human Laryngeal Carcinoma Cells Hep-2 Using Extremely-Low Frequency Electromagnetic Field

Attia HG et al. · 2024

Researchers tested whether combining silver nanoparticles with extremely low frequency electromagnetic fields (50 mT for 30 minutes) could better kill laryngeal cancer cells. The combination was 6 times more effective at destroying cancer cells than nanoparticles alone, triggering cell death and blocking cancer cell reproduction. This suggests EMF might enhance certain cancer treatments under controlled conditions.

Polyvinyl Alcohol Capped Silver Nanostructures for Fortified Apoptotic Potential Against Human Laryngeal Carcinoma Cells Hep-2 Using Extremely-Low Frequency Electromagnetic Field

Attia HG et al. · 2024

Researchers combined silver nanoparticles with extremely low frequency electromagnetic fields (50 mT for 30 minutes) to attack human laryngeal cancer cells. The combination increased cancer cell death by 6-fold compared to nanoparticles alone. This suggests EMF can enhance certain medical treatments, though the high field strength used far exceeds typical environmental exposure.

Sci Rep 13(1):17806, 2023

Unknown authors · 2023

Insufficient information provided. Only a journal citation (Sci Rep 13(1):17806, 2023), organism type (rodent), and year are available. The title and abstract were not provided, making it impossible to determine if this is an EMF study or to identify its findings.

Residential exposure to magnetic fields from transformer stations and risk of childhood leukemia

Unknown authors · 2023

Italian researchers studied 182 children with leukemia and 726 healthy controls to see if living near electrical transformer stations increases cancer risk. They found no overall increased risk, but children aged 5 and older showed some elevated risk when living within 15-25 meters of transformers. The study was limited by small numbers of children actually living that close to transformer stations.

Long-term radiofrequency electromagnetic fields exposure attenuates cognitive dysfunction in 5×FAD mice by regulating microglial function

Son Y, Park H-J, Jeong YJ, Choi H-D, Kim N, Lee H-J · 2023

This study examined whether long-term exposure to radiofrequency electromagnetic fields (1950 MHz, 5 W/kg for 6 months) could reduce cognitive dysfunction in 5×FAD mice with Alzheimer's disease through microglial regulation. The researchers found that RF-EMF exposure ameliorated cognitive impairment and amyloid-β deposition, with reduced expression of microglial markers (Iba1, CSF1R) and genes related to microgliosis and pro-inflammatory responses.

Effect of Terahertz Waves on the Structure of the Aβ42 Monomer, Dimer, and Protofibril: Insights from Molecular Dynamics Simulations

Chen C, Yan Z-S Ma Y-Q, Ding H-M · 2023

This molecular dynamics simulation study investigated how terahertz waves affect the structure of amyloid-beta (Aβ42) peptides at different aggregation states. The researchers found that terahertz waves at 42.55 THz enhanced structural interactions in Aβ42 monomers and dimers by resonating with specific molecular vibration modes, increasing β-sheet content and binding energy between monomers, while also mildly stabilizing tetrameric protofibril structures.

Long-term radiofrequency electromagnetic fields exposure attenuates cognitive dysfunction in 5×FAD mice by regulating microglial function

Son Y, Park H-J, Jeong YJ, Choi H-D, Kim N, Lee H-J · 2023

This study examined whether long-term exposure to radiofrequency electromagnetic fields (1950 MHz, 5 W/kg for 6 months) could reduce cognitive dysfunction in 5×FAD mice with Alzheimer's disease by regulating microglial function. The researchers found that RF-EMF exposure ameliorated cognitive impairment and amyloid-β deposition while reducing microglial activation markers and genes related to microgliosis and pro-inflammatory responses, with effects similar to those of a CSF1R inhibitor.

Sci Rep 13(1):17806, 2023

Unknown authors · 2023

Insufficient information provided. Only the journal citation (Sci Rep 13(1):17806, 2023), organism type (rodent), and author field are available. The title and abstract, which are necessary to determine if this is an EMF health effects study and to summarize its findings, were not provided.

Sci Rep 13(1):17806, 2023

Unknown authors · 2023

Insufficient information provided. Only the journal citation (Sci Rep 13(1):17806, 2023), organism type (rodent), and author field are available. The title and abstract necessary to determine whether this is an EMF study and to summarize its findings have not been provided.

Anticancer and antibacterial potentials induced post short-term exposure to electromagnetic field and silver nanoparticles and related pathological and genetic alterations: in vitro study

Unknown authors · 2022

Researchers tested extremely low frequency electromagnetic fields (ELF-EMF) and silver nanoparticles against bacteria and breast cancer cells. The combination achieved 100% bacterial kill rates and triggered cancer cell death through programmed cell destruction. The study suggests these agents work by creating oxidative stress that damages harmful cells while potentially sparing healthy ones.

Extremely Low Frequency Magnetic Fields Induce mTOR and Hsa_Circ_100338 Expression Changes in Gastric Cancer and Normal Fibroblast Cell Lines

Mansoury F, Babaei N, Abdi S, Entezari M, Doosti A · 2022

Researchers exposed normal and gastric cancer cells to extremely low frequency magnetic fields at different intensities for 18 hours. They found that specific field strengths (0.25 and 0.5 millitesla) reduced cancer cell viability while boosting normal cell health, and decreased expression of genes linked to tumor growth and spread. This suggests certain EMF exposures might have therapeutic potential against gastric cancer.

Learn More

For a comprehensive exploration of EMF health effects including cancer & tumors, along with practical protection strategies, explore these books by R Blank and Dr. Martin Blank.

FAQs: EMF & Cancer & Tumors

# Cancer & Tumors: What the Research Shows Of the 149 studies examining the relationship between electromagnetic field (EMF) exposure and cancer risk, 130 studies-87.2 percent-have documented measurable biological effects or increased cancer incidence. This isn't a marginal finding.
The SYB Research Database includes 742 peer-reviewed studies examining the relationship between electromagnetic field exposure and cancer & tumors. These studies have been conducted by researchers worldwide and published in scientific journals. The research spans multiple decades and includes various types of EMF sources including cell phones, WiFi, power lines, and other common sources of electromagnetic radiation.
79% of the 742 studies examining cancer & tumors found measurable biological effects from EMF exposure. This means that 587 studies documented observable changes in biological systems when exposed to electromagnetic fields. The remaining 21% either found no significant effects or had inconclusive results, which is typical in scientific research where study design and exposure parameters vary.