New study confirms 5G is safe: No harm found in human cell exposure

In a significant breakthrough for public health and technology debates, a new study from Germany’s Constructor University has found no harmful effects of 5G signals on human cells, even under extreme exposure conditions. By directly exposing human skin cells to high-intensity 5G electromagnetic waves, scientists concluded that there were no changes in gene expression or DNA methylation, both crucial indicators of cellular health. These findings offer the strongest evidence yet that 5G technology, despite ongoing conspiracy theories, does not pose a biological risk to humans when used within standard safety limits.


Scientists test 5G at full strength

To thoroughly assess 5G's safety, researchers intentionally exposed two types of human skin cells, fibroblasts and keratinocytes, to frequencies of 27 GHz and 40.5 GHz, which fall within the high-frequency millimetre-wave spectrum of 5G. These exposure levels were significantly higher than those typically encountered in real-world scenarios, simulating the most extreme possible conditions.


What is the impact of 5G on DNA or gene activity

After exposing the cells for durations ranging from 2 to 48 hours, the researchers found no measurable changes in gene expression or DNA methylation patterns. These two metrics are considered reliable indicators of how cells respond to environmental stress. Their unchanged state strongly suggests that 5G exposure does not trigger harmful cellular responses, even when pushed beyond standard safety thresholds.


Penetration depth: Too shallow to harm

One of the key reasons 5G is biologically safe, according to the study, is the limited penetration depth of high-frequency electromagnetic waves. Frequencies above 10 GHz only penetrate the skin up to 1 millimetre, meaning they do not reach deeper tissues or organs. This physical barrier significantly reduces the likelihood of any systemic biological effects.


Heating effects ruled out

While earlier studies suggested that radio frequencies might cause tissue heating, this research carefully controlled for temperature. The scientists ensured that any observed effects would be non-thermal, and still found no evidence of harm. This directly counters concerns that 5G may cause biological disruption without heating tissue.


Closing the debate on 5G health risks

By simulating worst-case scenarios and still finding no negative effects, this research offers a decisive answer to a long-standing question. The scientists hope their findings will help dispel fear and misinformation surrounding 5G, especially regarding so-called “invisible dangers.” While concerns about screen time and overall device usage remain valid, the radiation from 5G itself appears to be safe.