Health
What you should know about wireless radiation
Published
2 years agoon
For decades, the wireless industry has dismissed such ideas as fearmongering, and federal regulators have maintained that cell phones pose no danger. But a growing body of scientific research is raising questions, with the stakes heightened by the ongoing deployment of hundreds of thousands of new transmitters in neighborhoods across America.
The newest generation of cellphone technology, known as 5G, remains largely untested.
Do cell phones give off radiation?
Yes. Both cell phones and wireless transmitters (which are mounted on towers, street poles and rooftops) send and receive radio-frequency energy, called “nonionizing radiation.”
The amount of this radiation absorbed by the human body depends on how close a person is to a phone and a cell transmitter, as well as the strength of the signal the phone needs to connect with a transmitter.
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Cellphones displaying fewer bars, which means their connection with a transmitter is weak, require stronger power to communicate and so produce more radiation. Wireless transmitters, for their part, emit radiation continually, but little of that is absorbed unless a person is very close to the transmitter.
What does science say about this? Is it harmful?
Government-approved cellphones are required to keep radiation exposure well below levels that the FCC considers dangerous.
Those safeguards, however, have not changed since 1996, and they focus exclusively on the unlikely prospect of “thermal” harm: the potential for overheating body tissue, as a microwave oven would. The government guidelines do not address other potential forms of harm.
But a growing body of research has found evidence of health risks even when people are exposed to radiation below the FCC limits. The array of possible harms ranges from effects on fertility and fetal development to associations with cancer.
Some studies of people living near cell towers have also confirmed an array of health complaints, including dizziness, nausea, headaches, tinnitus and insomnia, from people identified as having “electromagnetic hypersensitivity.”
The most sensational — and hotly debated — health fear about wireless radiation is cancer.
In 2011, the International Agency for Research on Cancer, an arm of the World Health Organization, cited troubling but uncertain evidence in classifying wireless radiation as “possibly carcinogenic to humans.”
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In 2018, a study by the federal government that was nearly two decades in the making found “clear evidence” that cellphone radiation caused cancer in lab animals. A major study in Italy produced similar results.
Do cellphones pose any special health risks for kids?
Some experts say they do, citing studies suggesting children’s thinner, smaller skulls and developing brains leave them more vulnerable to the effects of cellphone radiation.
The American Academy of Pediatrics embraces this concern and has for years urged the FCC to revisit its radiation standards, saying they don’t adequately protect kids.
More than 20 foreign governments, as well as the European Environment Agency, urge precautionary steps to limit wireless exposure, especially for children.
What about risks in pregnancy?
A Yale study found hyperactivity and reduced memory in mice exposed to cellphone radiation in the womb, consistent with human epidemiological research showing a rise in behavioral disorders among children who were exposed to cellphones in the womb.
In 2019, during the administration of President Donald Trump, the FCC shut down a six-year review of its 1996 wireless radiation safety standards. The agency rejected pleas to make the standards more stringent, saying it had seen no evidence its safeguards were “outdated or insufficient to protect human safety.”
In 2021, however, a federal appeals court ordered the FCC to revisit the issue, saying the agency had ignored evidence of an array of noncancer harms to humans, animals and the environment, and that its decision to uphold its exposure standard failed to meet “even the low threshold of reasoned analysis.” The FCC has taken no formal action since then.
Determining wireless radiation’s health effects with certainty is difficult. Researchers cannot ethically subject people to endless hours of cellphone radiation to gauge the results.
Scientists have to rely on alternatives such as animal studies or epidemiological research, where challenges include getting subjects to accurately recount their wireless use and pinpointing the specific causes of disease or harm.
Many health effects of toxic exposure, especially cancer, take years or decades to appear. And the mechanisms of how wireless radiation could affect the body at the cellular level are poorly understood.
Research funding on the issue has also been scarce in the U.S., despite frequent calls for more study. Research (and researchers) raising health concerns have come under sharp attack from industry, and government regulators have remained skeptical.
A key FDA official, for example, dismissed the relevance of the federal study that found “clear evidence” of cancer in lab animals, saying it wasn’t designed to test the safety of cellphone use in humans, even though his agency had commissioned the research for that reason.
Linda Birnbaum, who led the federal agency that conducted the cellphone study, said that while proof of harm remains elusive, what is known means that precautions are merited.
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