Skip to content
Home » Cell phones and brain cancer — is this still a thing?

Cell phones and brain cancer — is this still a thing?

I thought that this disappeared long ago, but I guess the belief that cell phones cause brain cancer is still a thing. It doesn’t, and we have science on our side. But still, the myth endures.

This article is going to review a few studies that debunk the claim that cell phones are linked to brain cancer. I know, most of you already know this, but it’s always good to have a science-based article that helps you when your crazy uncle makes that claim.

silver iphone x lying on pre lit string lights
Photo by Irina Iriser on

The history of brain cancer and cell phones

A few years ago, the internet was filled with claims that cell phones caused all kinds of problems including brain cancer. Now it’s faded a bit, although the COVID-19 pandemic brought back a subset of these claims — 5G signals cause cancer and COVID-19 itself. So, it really didn’t disappear, it just mutated into a new form.

There are other reasons that the claim has faded a bit. First, people just weren’t going to give up their iPhones, even if there was a risk of cancer. People are addicted to their mobile phones because access to information, their friends, and the world at large is instantaneous. Brain cancer or not, prying that iPhone away from any of us is pretty close to impossible.

Second, and I’m skeptical about this, maybe the science convinced a lot of people. The science clearly shows that the COVID-19 vaccines are safe and effective, yet we have been unable to convince the fairly large segment of anti-vaxxers of these facts.

Third, and probably the most important reason, people are chasing other medical quackery these days. COVID-19 has been at the top of the list of medical issues, and cell phone claims have been put into abeyance, probably temporarily.

Whatever the reason is, I just want to take a bit of your time to quickly review all of the clinical and epidemiological studies that show there is no link. You know, just in case your crazy uncle speaks of it.

woman in gray top using her mobile phone
Photo by Lisa Fotios on

Scientific studies

I’m just going to list each study with a few comments. Of course, I’ll also list the full citation, since most of these are peer-reviewed studies of high quality. Because that’s what I do for my loyal readers.

I want to give a couple of important caveats to these types of studies:

  1. Like nutritional studies, this research relies upon the self-reporting of the subjects. They are not clinical trials where the actual use of cell phones can be monitored.
  2. Brain cancers can take years to manifest themselves. If cell phones are linked to brain cancer, then it could be decades between the causal event and the detection of a glioma. This is an important issue with all studies that try to link something to cancer.

I want to be complete in my analysis, so there is a bit of information that could be concerning — animal studies. The National Toxicity Program has found that high exposure to radiofrequency radiation appeared to be linked to tumors in the hearts of male rats, as well as some evidence of tumors in the brains and adrenal glands of male rats.

As I have written previously, preclinical studies in animal models rarely (less than 1% of the time) have human clinical significance. There’s an old joke that we have caused cancer in rats and mice millions of times. I have been known to write, “don’t bother me with animal studies, call me when phase 3 clinical trials in humans have been completed.”

I don’t want to dismiss animal studies outright, but there don’t seem to be any human studies that support the claim that cell phones are linked to brain cancer. In fact, the studies dismiss any link between the two.


My review of the potential links between cell phones and brain cancer seems to show not much is there. If there is a link, the increased risk of cancer is probably very small.

There are more important ways to lower your risks of cancer — don’t smoke and get cancer-preventing vaccines like HPV and hepatitis B. That’s the best advice that the old feathered dinosaur can give you about preventing cancer.


Michael Simpson

Don’t miss each new article!

We don’t spam! Read our privacy policy for more info.

Liked it? Take a second to support Michael Simpson on Patreon!
Become a patron at Patreon!