Do 5G cell towers cause cancer?

This page is for anyone worried that 5G or cell towers cause cancer. It sums up what federal agencies say about radio frequency energy, towers, and cancer risk.

A cell tower (sometimes called a mast) goes up down the road. Soon afterwards someone posts that it causes cancer. The claim spreads because it has a visible villain and a simple story.

The claim is worth checking, not just dismissing. So here is what federal agencies say.

The FDA shares responsibility for cell phones with the Federal Communications Commission (FCC). The FCC sets limits on how much radio frequency energy these products may emit.

On health, the FDA's summary is short. The weight of scientific evidence has not linked cell phone radio frequency radiation with any health problems. On younger users it adds that the scientific evidence does not show a danger to users of cell phones from radio frequency exposure, including children and teenagers.

The FDA also says it continually monitors the scientific studies and public health data on cell phones and the search for evidence of health effects. In other words, the question stays open, but no link has been found so far.

Most of the research is about handsets, because a handset sits against your head. A tower is much farther away.

NCI's fact sheet on electromagnetic fields covers antenna towers and base stations directly. It notes that most people are exposed only intermittently. The strength of that exposure varies with how densely populated the area is, how far away the source is, and the time of day.

For radio and television broadcast towers, NCI states that radiofrequency exposures near the base of these towers are below guideline limits, so exposure of the general population is very low.

Mobile signals are non-ionizing radiation, meaning lower-energy waves. NCI describes these fields as not known to damage DNA or cells directly. X-rays and gamma rays are different. They are ionizing (high-energy) radiation and can damage DNA.

NCI is direct about the gap in the theory: no mechanism by which ELF-EMFs (extremely low frequency electromagnetic fields) or radiofrequency radiation could cause cancer has been identified.

NCI also notes what is still uncertain. It reports on a European Commission committee review. It concluded that the possibility of a link with acoustic neuroma remains open. Acoustic neuroma is a noncancerous tumor on the nerve that connects the ear to the brain.

That is an open question about handsets held to the ear. It is not evidence about a tower on a hill.

People often reach a page like this after a diagnosis, looking for a cause. That search is human, and it rarely lands anywhere useful when it settles on the tower at the end of the street.

If you have that worry, take it to your care team. Ask what actually raises risk in your own case, and what is worth changing. And if the worry has taken hold of your days, say that too. It is a real problem, and there is real help for it.