A Report on Non-Ionizing Radiation

DNA breaks: Microwave News Article Archive (2004 - )

December 4, 2020

“Effects of Different Mobile Phone UMTS Signals on DNA, Apoptosis and Oxidative Stress in Human Lymphocytes,” Environmental Pollution, December 2020. “Our data support a notion that each specific signal used in mobile communication should be tested in specially designed experiments.”

November 18, 2020

“Effect of Intermittent ELF MF on Umbilical Cord Blood Lymphocytes,” Bioelectromagnetics, posted November 15, 2020. Among the findings: A stronger effect at lower field strengths. Also: “[O]ur results provide a new example of the biological relevance of the first Schumann resonance frequency (7.8 Hz).”

June 11, 2020

“Continuous Exposure to 1.7 GHz LTE EMFs Increases Intracellular Reactive Oxygen Species to Decrease Human Cell Proliferation and Induce Senescence,” Scientific Reports, June 8, 2020.

“The anti-proliferative effect of 1.7 GHz LTE RF-EMF on various human cells in this study suggests that the [such] exposure would be more harmful to children.” From Korea, open access.

January 21, 2020

Last January, a team led by Yawei Zhang of the Yale School of Public Health in New Haven published an epidemiological study on the possible link between thyroid cancer and cell phones. Though some “suggestive” associations were seen among long-term users, none was statistically significant. Still, the results “warrant further investigation,” they advised.

Zhang did follow up, and what she found could well change the way people think about cell phone cancer risks.

She discovered that some people have an innate susceptibility to thyroid cancer when exposed to cell phone radiation. These individuals have small variations in their DNA which affect the functioning of seven different genes.

All seven genes regulate DNA repair.

January 14, 2020

“Comparative Cyto- and Genotoxicity of 900 MHz and 1800 MHz EMF Radiations in Root Meristems Allium cepa,” Exotoxicology and Environmental Safety, January 2020.

Very low SARs lead to DNA breaks: 0.09 W/Kg @900 MHz and 0.169 W/Kg @1.8 GHz. Damage “more pronounced” at 1800 MHz. (Allium cepa = onion)

January 13, 2020

“Whole-Body Exposures to RF-EMF Energy Can Cause DNA Damage in Mouse Spermatozoa via an Oxidative Mechanism,” Scientific Reports, November 25, 2019.

In summary, our evidence supports the hypothesis that sustained whole-body RF-EME is capable of inducing a state of oxidative stress in the male germ line, a cell vulnerable to the effects of ROS. … Furthermore, our data further implicate the mitochondria as the target for RF-EME biophysical interaction, with a consequential elevation of mitochondrial ROS generation being linked to reduced motility and elevated oxidative DNA damage and DNA fragmentation in the spermatozoa of exposed male.” From Australia. Open access.

October 22, 2019

“Evaluation of the Genotoxicity of Cell Phone RFR in Male and Female Rats and Mice following Subchronic Exposure,” Environmental and Molecular Mutagenesis, posted October 21, 2019.

From the NTP: "[S]ignificant increases in the levels of DNA damage measured by the comet assay were seen in several tissues from rats and mice, indicating that RFR may be capable of causing increases in DNA damage.” More here and here.

September 17, 2019

The U.S. National Toxicology Program (NTP) will soon embark on a new phase of its long-running RF project. Last year, the NTP concluded that RF radiation causes cancer; now it will begin a systematic search for mechanisms to explain how and why the tumors developed. Work is expected to begin by the end of the year.

The research plan is wide-ranging. It will include studies on gene expression, oxidative stress and DNA damage and repair, as well as on the possible role played by heat. Other priorities on the NTP agenda are studies on behavior and stress.

March 21, 2017

The National Toxicology Program (NTP) has changed course and will not —at least for the time being— publish its findings of increased DNA breaks among rats exposed to cell phone radiation as a stand-alone paper.

The DNA study, which is part of NTP’s landmark experiment showing that RF radiation can lead to tumors in the brains and hearts of laboratory animals, will now be incorporated in NTP’s Technical Report on the $25 million project, the NTP has told Microwave News.

December 13, 2016

“RF Radiation (900 MHz)-Induced DNA Damage and Cell Cycle Arrest in Testicular Germ Cells in Swiss Albino Mice,” Toxicology and Industrial Health, posted online October 13, 2016.

“Induced oxidative stress causes DNA damage in germ cells, which alters cell cycle progression leading to low sperm count in mice.” These changes are reversible (from Assam University, India; open access).

September 6, 2016

In May, the U.S. National Toxicology Program (NTP) announced that male rats exposed to cell phone radiation developed higher rates of cancer. Soon, the NTP will explain how that might have happened.

The same RF/microwave radiation that led male rats to develop brain tumors also caused DNA breaks in their brains. Female rats —which did not have significant elevated tumor counts— had fewer DNA breaks.

All these findings are part of the same $25 million NTP project.

The NTP results provide “strong evidence for the genotoxicity of cell phone radiation,” Ron Melnick told Microwave News.

January 25, 2016

“2100 MHz RF Radiation of a 3G-Mobile Phone and the DNA Oxidative Damage in Brain,” Journal of Chemical Neuroanatomy, posted online January 8, 2016.

“Our main finding was the increased oxidative DNA damage to brain after 10 days of exposure with the decreased oxidative DNA damage following 40 days of exposure compared to their control groups.” This is yet another research paper from Turkey.

August 19, 2013

“Mobile Phone Radiation [MPR] Induces Mode-Dependent DNA Damage in a Mouse Spermatocyte-Derived Cell Line: a Protective Role of Melatonin,” International Journal of Radiation Biology, posted online August 19, 2013, from Chongqing, China.

“[H]ands-free devices might reduce the MPR exposure intensity to the human head. However … the male reproductive system may be put into risks. Thus, it is important and urgent to establish feasible and effective strategies to prevent reproductive impairment following daily exposure to MPR. Significantly increased levels of DNA damage in the “dialing” and “dialed” modes were found in the present study…”

July 26, 2013

“Genotoxic Effects of Exposure to RF-EMF in HL-60 Cells Are Not Reproducible,” Mutation Research/Genetic Toxicology and Environmental Mutagenesis, posted online June 28, 2013, by a German team including Günter Speit and Rudolf Tauber.

“In conclusion, two independent attempts failed to reproduce genotoxic effects of RF-EMF in HL-60 cells as reported by the REFLEX project. These repeat experiments were performed under the same experimental conditions as the original experiments and one part of the repeat study was performed by the scientists who also generated the REFLEX data.”

April 15, 2013

“GSM 900 MHz Cellular Phone Radiation Can Either Stimulate or Depress Early Embryogenesis in Japanese Quails Depending on the Duration of Exposure,” International Journal of Radiation Biology, posted online April 10, 2013, from a group in the Ukraine.

“Taken together, this suggests that the low intensity radiation emitted by a commercial GSM 900 MHz cell phone can result in either decrease of DNA strand breaks; or otherwise induce substantial DNA damage in cells of the developing bird embryo depending on the duration of the exposure. See also the group's earlier paper in Electromagnetic Biology and Medicine.

March 25, 2013

“Physiologic Brain Activity Causes DNA Double-Strand Breaks in Neurons, with Exacerbation by Amyloid-ß,” Nature Neuroscience, posted online March 24, 2013:

“Our study shows that exploratory activity, which is associated with physiological increases in neuronal activity and the encoding of new information, causes widespread increases in neuronal DSBs.”

January 31, 2013

“Cell Type-Dependent Induction of DNA Damage by 1800 MHz RF EMFs Does Not Result in Significant Cellular Dysfunctions,”

PLoS1, published online January 23, 2013, from Zhengping Xu's lab in Hangzhou, China.

May 18, 2012

We haven't posted many new items recently because we've been too busy fixing up the new Web site. In the process, we've been rereading many of our old stories. Last night, we came across an item from five years ago under the title "Cell Specific Responses to RF." It highlighted some new research from Finland, which found that cell phone radiation affected the activity of ODC, a biologically important enzyme, in...

We haven't posted many new items recently because we've been too busy fixing up the new Web site. In the process, we've been rereading many of our old stories. Last night, we came across an item from five years ago under the title "Cell Specific Responses to RF." It highlighted some new research from Finland, which found that cell phone radiation affected the activity of ODC, a biologically important enzyme, in...

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