RF: Microwave News Article Archive (2004 - )

Unremarkable science can sometimes tell a remarkable story. Two papers that were published in the last few weeks —and passed mostly unnoticed— have important, though very different, backstories.

One offers a surprising glimpse of change in the usually static field of RF research, while the other shows how much has stayed the same over the last many years.

Yet, in the end, they offer the same well-worn message, always worth repeating: Those who sign the checks, run the show.

The two papers come 30 years after Henry Lai and N.P. Singh began an experiment at the University of Washington in Seattle that would set off alarm bells across the still-young cell phone industry —and the U.S. military. Lai and Singh would show that a single, two-hour exposure to low-level microwave radiation (today, we’d say RF) could lead to breaks in the helical strands of DNA in the brains of live rats.

“Theta Band Brainwaves in Human Resting EEG Modulated by Mobile Phone RF,” International Journal of Radiation Biology, March 3, 2023. From INERIS (France). Concludes: “This work contributes to the growing literature that suggests the potential modulation of human spontaneous EEG by exposure to RF-EMF.”

UPDATE: Other meetings have now been scheduled for March and June 2024. Next possible slot for RF radiation is October 2024.

On November 23, Elisabete Weiderpass, the Director of the International Agency for Research on Cancer (IARC), revealed that a new assessment of the evidence linking radiofrequency (RF) radiation to cancer would likely take place in early 2024. A formal decision could come within a few months.

Calls for a new IARC evaluation have been mounting for some years following the release of two large animal studies showing elevated tumor counts after lifelong exposure to RF radiation. Many believe that the animal experiments leave the Agency little choice but to increase the cancer risk classification at least one notch to “probable” from the current “possible,” or perhaps to its highest classification, a known human carcinogen.

But, as Weiderpass made clear on making the announcement at a conference in Paris, the RF–cancer risk might instead be downgraded and the “possible” classification removed.

The stakes are high.

Two influential health agencies, both based in France, will host a one-day meeting on RF–health research, November 23 in Paris. The public is invited to attend in person or online. Registration is free.

The conference, organized by ANSES, the French Agency for Food, Environmental and Occupational Health & Safety, and IARC, the International Agency for Research on Cancer, will focus on potential effects of RF radiation on the brain and on cancer risks. The theme is “Research in a Fast-Moving Environment.”

“Changes in the Excitability of Primary Hippocampal Neurons Following Exposure to 3.0 GHz RF EMFs,” Scientific Reports, March 3, 2022. The results show that RF-EMF exposure can alter neuronal activity after a 60-minute exposure to 3.0 GHz at a low dose (SAR <1 W/Kg). From the U.S. Air Force. Open access.

“RF Exposure of the Yellow Fever Mosquito (A. aegypti) from 2 to 240 GHz,” PLoS Computational Biology, October 28, 2021. “For a given incident RF power, the absorption increases with increasing frequency between 2 and 90 GHz with a maximum between 90 and 240 GHz.” Open access.

“Threshold of RF EMF Effect on Human Brain,” International Journal of Radiation Biology, posted August 23, 2021. Lowest SAR threshold for effect on EEG is more than a 1,000 times lower than level deemed safe by ICNIRP and the U.S. FCC. Also the changes in EEG are similar to those seen in depression.

A new analysis from the radiation group at the International Agency for Research on Cancer (IARC) calls into question the agency’s own classification of wireless radiation as a possible human carcinogen.

On May 27, IARC’s Isabelle Deltour presented the new analysis of the incidence of malignant brain tumors (glioma) in the Nordic countries —Denmark, Finland, Norway and Sweden— over the last several decades. She spoke at an online colloquium hosted by the German Federal Office of Radiation Protection, known as the BfS.

Deltour argued that the trends are mostly not “compatible” with those seen in the epidemiological studies —principally, Interphone and Lennart Hardell’s— that were the basis of IARC’s 2011 designation of RF radiation as a possible, or 2B, human carcinogen.

The International Commission on Non-Ionizing Radiation Protection (ICNIRP) has issued updated guidelines for exposures to RF/microwave radiation.

“The guidelines have been developed after a thorough review of all relevant scientific literature, scientific workshops and an extensive public consultation process. They provide protection against all scientifically substantiated adverse health effects due to EMF exposure in the 100 kHz to 300 GHz range,” according to...