What Happened When Scientists Exposed Human Cells To 5G?

A groundbreaking study has finally answered the question that has lingered in public discourse for years: What happens when human cells are exposed to 5G? The answer is both clear and anticlimactic—absolutely nothing.

At Constructor University in Germany, researchers carried out the most comprehensive and rigorously controlled experiment to date on this subject. Human skin cells were exposed to electromagnetic frequencies that far exceed those emitted by standard 5G towers—up to ten times higher than the recommended exposure limit—for two separate durations: two hours and forty-eight hours. The result? Nothing changed. No gene disruption, no cellular mutation, no cause for concern.

Burying the 5G Myth

The rise of 5G technology in mobile communication was driven by an exponential increase in internet usage, demanding faster speeds and greater data capacity. However, its introduction was accompanied by widespread conspiracy theories, especially during the COVID-19 pandemic. From baseless claims that 5G weakens the immune system to more bizarre ideas involving mind control, 5G became a scapegoat for a wide array of fears and misinformation.

Ironically, the very same technology that conspiracy theorists demonized was instrumental in spreading their ideas faster than ever before.

Despite ongoing efforts by scientists to correct public misconceptions—such as explaining that radiofrequency radiation used in mobile networks is non-ionizing (and thus not harmful like ionizing radiation from X-rays or gamma rays)—concerns persisted. Prior research into the biological effects of 5G frequencies often suffered from methodological flaws, including poor controls and unreliable statistics.

A Study Built to End the Debate

To tackle these flaws head-on, the new study used a comprehensive experimental design. Researchers exposed two types of human skin cells—keratinocytes and fibroblasts—to 5G electromagnetic frequencies (specifically 27 GHz and 40.5 GHz), which are significantly higher than what is used in actual 5G towers. Importantly, they also tested intensity levels up to 10 times greater than the safety limits.

These experiments took place in sealed, temperature-monitored facilities under blinded conditions, ensuring accuracy and eliminating bias. Two control groups were included: one exposed to ultraviolet (UV) light, and another that received sham exposure—handled the same as the test cells but not actually subjected to 5G waves. Only the UV-exposed group showed predictable genetic changes.

Advanced genetic analysis techniques, including whole-genome RNA sequencing and DNA methylation arrays, were used to detect even the subtlest shifts in cellular function. But none were found.

To further eliminate any doubt, the team ran simulations in which the labels of sham and exposed cells were randomly shuffled hundreds of times. Again, the results showed no statistically significant changes in gene activity.

Final Verdict: No Effect

“Our results show with great clarity that in human skin cells, even under worst-case conditions, no significant changes in gene expression or methylation patterns are observed after exposure,” the scientists reported.

This study decisively debunks the myth that 5G poses a biological threat. By emphasizing controlled conditions, repeatable methodology, and statistical rigor, it casts fundamental doubt on the idea that nonthermal biological effects from 5G exposure exist at all.

Putting the Debate to Rest

The researchers acknowledge that misinformation persists, partly due to a few isolated studies with contradictory findings. But their hope is that this latest work—published under strict scientific standards—will help close the debate once and for all.

“In spite of assessments from the WHO and the National Toxicology Program, this topic remains in public and political discourse,” they noted. “Due to our strong emphasis on highly controlled experimental conditions and our combinatorial analysis, we hope to close this debate and in particular cast fundamental doubt on the existence of possible nonthermal biological effects of exposure.”

So, what happened when scientists exposed human cells to 5G? Absolutely nothing.