brain cell phones: Microwave News Article Archive (2004 - )

“Use of Mobile Phones and the Incidence of Glioma Since 1979,” IARC’s Isabelle Deltour and Joachim Schüz for Germany’s Federal Office of Radiation Protection, June 30, 2022. Free access. An increased risk of brain tumors in the 10% heaviest mobile phone users remains “plausible.” But any risk would be ”very small”, and would only occur after “very long latency periods of several decades”, or only affect small subgroups within glioma patients. For context go here.

“Wireless Phone Use in Childhood and Adolescence and Neuroepithelial Brain Tumors: Results from the International MOBI-Kids Study,” Environment International, February 2022.  It “provides no evidence of a causal association between wireless phone use and brain tumors in young people.” However, sources of bias prevent “ruling out a small increased risk.” Open access. May 2022: Critique of the study by Lennart Hardell and Joel Moskowitz.

“Cellular Phone Use and Risk of Tumors: Systematic Review and Meta-Analysis,” International Journal of Environmental Research and Public Health, posted November 2, 2020.

“This comprehensive meta-analysis of case-control studies found evidence that linked cellular phone use to increased tumor risk.” An update to a 2009 meta-analysis by the same group.

The incidence of glioblastoma multiforme, GBM, the most aggressive type of brain tumor, though rising slowly over the last 20 years, has not jumped up in the U.S. and Canada, as it has in England and a number of other northern European countries, according to a new analysis of national brain tumor registry data.

Between 1995 and 2015, GBM rates went up 10% in the U.S. and 26% in Canada. In contrast, the increase in England over the same period was 110%.

De-Kun Li wants to change the conversation on cell phones and cancer. Li, a senior epidemiologist and veteran EMF researcher, believes that brain tumors have been getting too much attention at the expense of other types of cancer, notably colorectal cancer.

Efforts to reduce colon and rectal cancers have been a striking success story for those over 50 years old. Incidence among older Americans declined 32% between 2000 and 2013, due largely to better screening. But the story for young adults is very different. Those born around 1990 now face four times the risk of developing rectal cancer and twice the risk of colon cancer in their 20s, compared to those born around 1950, according to the American Cancer Society.

“No one can explain this apparent contradiction,” Li told Microwave News. Known risk factors for colorectal cancer include obesity, an unhealthy diet and lack of physical activity, but Li doesn’t think they can resolve the paradox.

It has been nearly eight years since an expert panel of the International Agency for Research on Cancer (IARC) classified RF radiation as a possible human carcinogen. Since then, neither the World Health Organization (WHO) nor the International Commission on Non-Ionizing Radiation Protection (ICNIRP) has recommended precautionary policies to limit potential health risks.

No U.S. health agency has yet advised the public to reduce RF exposures.

Even after two large animal studies —by the U.S. National Toxicology Program (NTP) and Italy’s Ramazzini Institute— presented clear evidence of a cancer link last year, the WHO has remained silent; ICNIRP responded by calling both animal studies unconvincing.

Now comes the Annual Review of Public Health, which on January 11 posted a paper by five leading epidemiologists who posit that, after a systematic review of all the human studies, they don’t see an elevated cancer risk. The takeaway is that the IARC classification was a mistake.

“Mobile Phone Use and Incidence of Brain Tumour Histological Types, Grading or Anatomical Location: A Population-Based Ecological Study,” BMJ Open, posted December 9, 2018.

“We found no evidence that mobile phone use increased any brain tumour histological types or subtypes.” See also the press release. Open access.

“We believe that the link between radiofrequency (RF) radiation and tumors in male rats is real,” says John Bucher, the former associate director of the U.S. National Toxicology Program (NTP).

The announcement accompanies this morning’s release of the NTP final reports of studies on cancer in rats and mice exposed to cell phone radiation. Bucher’s project, the largest in NTP history, cost $30 million and took more than ten years to complete.

The NTP found what it calls “clear evidence” that two different types of cell phone signals, GSM and CDMA, increased the incidence of malignant tumors in the hearts of male rats over the course of the two-year study.

Japanese and Korean officials are working on a partial replication of the U.S. National Toxicology Program (NTP) animal study on cancer risks from cell phone radiation. The project is expected to be approved and get underway late next year.

Though collaborating on a common experimental design, each country will carry out its own exposures with animals from the same breeder. If the designs are similar enough, the two sets of data will be combined in a joint analysis.

“We have been discussing this issue in Japan,” said Masao Taki of the Department of Electrical and Electronic Engineering at Tokyo Metropolitan University, who was a member of ICNIRP from 1996 to 2008.