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Is 5G millimeter wave spectrum dangerous? We asked an expert

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Harnessing millimeter wave (mmWave) spectrum for faster data speeds is one of the biggest breakthroughs of 5G, the next generation cellular networking technology following 4G LTE. But there are concerns this very high-frequency spectrum could pose adverse health effects for the public.

These kinds of concerns aren’t new — consumer anxiety concerning whether radiofrequency radiation can increase the risk of cancerous tumors has existed for some time. To get some concrete answers on the subject, we reached out to the U.S. Food and Drug Association (FDA), a government agency that is not only responsible for protecting public health through the control and supervision of food and drugs, but also electromagnetic radiation emitting devices. We further supplemented those responses with information sourced from the American Cancer Society and the International Agency for Research on Cancer.

What is radiofrequency (RF) radiation?

To begin, let’s define radiofrequency (RF) radiation. At a basic level, radiation isn’t as intimidating a term as it might seem. Radiation is the emission of energy from any source, which means even the heat that comes off our bodies counts as radiation.

RF radiation is just another name for radio waves. As the FDA puts it, RF radiation “is one form of electromagnetic energy which consists of waves of electric and magnetic energy moving together (radiating) through space.”

Is RF radiation safe?

The radiation that cellphones give off is at the low-energy end of the electromagnetic spectrum, making them much safer than high-energy radiation like x-rays and gamma rays. While the latter give off ionizing radiation, meaning they have enough energy to ionize an atom or molecule and thus damage cell DNA resulting in cancer, RF radiation does not. RF radiation only has enough energy to move or vibrate atoms in a molecule, not enough to ionize it. While that means RF radiation does not cause cancer by damaging DNA cells, there still are ongoing studies regarding the effects of non-ionizing radiation.

note 9 using phone
Julian Chokkattu/Digital Trends

The FDA noted in 2018 statements that it believes “the current safety limits for cellphone radiofrequency energy exposure remain acceptable for protecting the public health.”

The U.S. Environmental Protection Agency (EPA) and U.S. National Toxicology Program (NTP) also have not formally classified RF radiation as cancer-causing. Meanwhile, the World Heath Organization’s International Agency for Research on Cancer (IARC) classifies RF radiation as “possibly carcinogenic to humans” due to the finding of a possible link in at least one study between cellphone use and a specific type of brain tumor. However, the IARC considers overall evidence “limited.”

It’s also important to note the IARC puts coffee and talc-based body powder in the same “possibly carcinogenic” category.

What about 5G?

The FDA told Digital Trends that, at this time, it “continues to believe that the current safety limits for cellphone radiofrequency energy exposure remain acceptable for protecting the public health.”

“The limits are based on the frequency of the device, meaning that 5G has a different limit than other technologies,” an agency spokesperson wrote in an email. “As part of our commitment to protecting the public health, the FDA has reviewed, and will continue to review, many sources of scientific and medical evidence related to the possibility of adverse health effects from radiofrequency energy exposure in both humans and animals and will continue to do so as new scientific data are published.”

The agency noted that it lists significant ongoing research on the topic of RF exposure on its website.

So, is 5G mmWave safe?

According to expert agencies and the studies we have so far, there’s nothing to suggest 5G mmWave is a significant health risk. If you’re the type to be cautious, it’s always possible to reduce RF radiation. Simple things like sleeping with the phone away from your bed at night could help ease worries, too. Ultimately though, according to the experts, your cellphone use shouldn’t cause you any more concern from a carcinogen perspective than your coffee use.





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