Effects of Exposure to Electromagnetic Fields: Thirty years of research

The preponderance of peer-reviewed research published since 1990 has found significant adverse effects from exposure to radio frequency radiation and extremely low frequency and static electromagnetic fields. 

Dr. Henry Lai, Professor Emeritus at the University of Washington, Editor Emeritus of the journal, Electromagnetic Biology and Medicine, and an emeritus member of the International Commission on the Biological Effects of EMF, has compiled summaries of the research on the biological effects of exposure to radio frequency (RFR) and extremely low frequency (ELF) and static electromagnetic fields (EMF). His set of abstracts which covers the period from 1990 through May 2026 constitutes a comprehensive collection of the peer-reviewed publications of  in vivo and in vitro research.

Dr. Lai reports that the preponderance of research has found that exposure to RFR or ELF EMF produces oxidative effects or free radicals, and damages DNA. Moreover the preponderance of studies that examined genetic, neurological and reproductive outcomes has found significant effects. Among hundreds of studies of RFR, 72% to 89% reported significant effects. Among hundreds of studies of ELF and static fields, 78% to 90% reported significant effects.

According to Dr. Lai, 260 low-intensity (SAR < 0.40 W/kg) radiofrequency radiation (RFR) exposure studies published since 1990 reported significant effects: "This means that biological systems are very sensitive to RFR. Moreover, it is clear that the current RFR exposure guidelines do not prevent the detrimental health effects of RFR."

The entire collection contains abstracts for more than 3,000 published papers. The abstracts can be downloaded by clicking on the links below.

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Although 89% of 438 peer-reviewed papers published since 1997 found statistically significant evidence of oxidative effects from RFR exposure; a recent WHO systematic review which examined only 52 studies erroneously concluded, "The evidence for or against a relation between RF-EMF and biomarkers of oxidative stress is overall of very low certainty.(Meyer et al., 2024).

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In contrast, a recent WHO systematic review of animal carcinogenicity studies concluded with "high certainty" that chronic exposure to RFR causes cancer in the brain and in the heart (Mevissen et al., 2025) and another WHO review concluded with "high certainty" that it causes infertility (Kenny et al., 2024). 

In 2011, the International Agency for Research on Cancer (IARC) of the World Health Organization classified radio frequency radiation “possibly carcinogenic to humans” (Group 2B). The IARC had planned to review RFR again by 2024 because most peer-reviewed studies published in the past decade found significant evidence that RFR causes genotoxicity; however, this review has been postponed. If IARC were to convene EMF experts with no conflicts of interest (including no present or past associations with ICNIRP), RFR is likely to be re-classified to either "probably carcinogenic to humans" (Group 2A) or "carcinogenic to humans" (Group 1). 

Cell phones and other wireless devices also produce static and extremely low frequency (ELF) electromagnetic fields. ELF was classified by the IARC as “possibly carcinogenic to humans” (Group 2B) a decade before RFR received this classification.

Summary of Results (Last major update: June 8, 2026)

Radiofrequency radiation (RFR)

89% (n=390) of 438 RFR oxidative effects (or free radical) papers published since 1997 reported significant effects including 96% (n=110) of 114 studies with a SAR (specific absorption rate) ≤ 0.40 watts per kilogram (which is ten times less than the 4.0 W/kg threshold of harm that the FCC and the ICNIRP use to base their RFR exposure limits).

72% (n=396) of 550 RFR genetic effects papers published since 1990 reported significant effects including 192 (84%) of 84) of 228 studies of gene expression.

78% (n=396) of 507 RFR neurological papers published since 2007 reported significant effects.

85% (n=354) of 415 RFR reproduction and development papers published since 1990 reported significant effects. Among the low-intensity exposure studies that reported significant effects, 73 studies used an exposure with a SAR ≤ 0.40 W/kg and 53 studies had a SAR ≤ 0.08 W/kg.

260 low-intensity RFR exposure studies (SAR < 0.40 W/kg) published since 1990 reported significant effects.

Extremely low frequency (ELF) and static electromagnetic fields

90% (n=319) of 353 ELF/static EMF oxidative effects (or free radical) papers published since 1990 reported significant effects.

84% (n=363) of 424 ELF/static EMF genetic effects papers published since 1990 reported significant effects including 92% (n=232) of 252 studies of gene expression.

92% (n=364) of 397 ELF/static EMF neurological papers published since 2007 reported significant effects.

78% (n=82) of 105 ELF/static EMF reproduction and development papers published since 1990 reported significant effects. 

Links to download each set of abstracts

   RFR = radio frequency electromagnetic fields

   ELF = extremely low frequency or static electromagnetic fields

RFR Oxidative Effects studies

RFR Genetic Effects studies

    RFR Gene Expression studies

RFR Neurological Effects studies

RFR Reproduction / Development studies

Studies of biological effects in animals & plants exposed to low intensity RFR (SAR < 0.4 W/kg)

ELF Oxidative Effects studies

ELF Genetic Effects studies

    ELF Gene Expression studies

ELF Neurological Effects studies

ELF Reproduction studies

Static / ELF low intensity studies that found effects (< 0.01 mT = < 10 μT)

Intermediate Frequency studies (300 Hz – 1 MHz)

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Feb 4, 2023 (Updated October 4, 2024)

Effects of Radio Frequency Radiation Exposure on Free Radical-Related Cellular Processes (332 studies)

Dr. Henry Lai, Professor Emeritus, Department of Bioengineering, University of Washington

This document contains abstracts for 383 studies published since 1997 that assessed the effects of radiofrequency radiation (RFR) exposure on free radical-related cellular processes.

See pages 215-250 for a table that summarizes key details about each study.

Summary

1. Of the 383 studies published from 1997- October 2024, 340 (89%) studies reported significant effects; 43 (11%) studies found no significant effects.

2. Change in cellular free radical status is a consistent effect of radiofrequency radiation.

3. Effects can occur at low specific absorption rates (SAR) (<0.4 W/kg) of exposure. See 98 studies marked LI for low intensity, 94 (96%) low intensity studies found effects.

4. Effects have been reported at different frequencies, exposure duration, and modulations, and in many different biological systems, cell lines, and animal species. These data support the assertion that “Radiofrequency radiation affects cellular free radical processes.”

5. Most of the studies are live animal (in vivo) studies with long-term exposure, e.g., daily exposure up to months.

6. Some studies used mobile phones or RFR-emitting devices for exposure (see Table, pp. 215-250). The SAR and characteristics of RFR in these studies are not well defined. However, these studies should not be overlooked because they represent real-life exposure scenarios. Waveform modulations of radiofrequency radiation during wireless communication usage probably play an important role in biological effects. They are not revealed in studies that used a simple form of radiation (e.g., continuous-wave or GSM) and spatially uniform fields. Researchers in bioelectromagnetics should realize that the perfect RFR exposure system simulating real life exposures simply does not exist.

Click on the following link to download the 250-page document (pdf): Link