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Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.

DNA & Genetic Damage

Exposure to 26.5 GHz, 5G modulated and unmodulated signal, does not affect key cellular endpoints of human neuroblastoma cells

No Effects Found

Authors not listed · 2025

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26.5 GHz 5G signals showed no cellular damage in controlled lab study, but more research needed.

Plain English Summary

Summary written for general audiences

Researchers exposed human brain cancer cells to 26.5 GHz 5G signals for 3 hours at 1.25 W/kg and found no effects on cell division, DNA damage, or other key cellular functions. The study tested both continuous wave and modulated 5G signals using highly controlled laboratory conditions. This adds to the growing body of research examining potential health effects of millimeter wave 5G frequencies.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 26.5 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 26.5 GHzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHzLogarithmic scale
Cite This Study
Unknown (2025). Exposure to 26.5 GHz, 5G modulated and unmodulated signal, does not affect key cellular endpoints of human neuroblastoma cells.
Show BibTeX
@article{exposure_to_265_ghz_5g_modulated_and_unmodulated_signal_does_not_affect_key_cellular_endpoints_of_human_neuroblastoma_cells_ce3006,
  author = {Unknown},
  title = {Exposure to 26.5 GHz, 5G modulated and unmodulated signal, does not affect key cellular endpoints of human neuroblastoma cells},
  year = {2025},
  doi = {10.1038/s41598-025-04834-3},
  
}
DOI: 10.1038/s41598-025-04834-3PubMed: 40595799

Quick Questions About This Study

This study found no damage to human neuroblastoma cells exposed to 26.5 GHz 5G signals for 3 hours at 1.25 W/kg. Cell division, DNA integrity, and other key cellular functions remained normal under both continuous wave and modulated 5G signal conditions.
The researchers used 1.25 W/kg specific absorption rate, which exceeds typical real-world 5G base station exposures but remains within current safety guidelines. This level was applied for 3 hours using precisely controlled reverberation chamber conditions.
Yes, 26.5 GHz falls within the millimeter wave spectrum (24-40 GHz) used by 5G networks for high-speed data transmission. This frequency band is being deployed worldwide for 5G infrastructure, making this research directly relevant to real-world exposures.
Yes, the study tested both continuous wave (unmodulated) and actual 5G modulated signals to determine if the specific signal characteristics of 5G technology produce different biological effects compared to simple continuous wave radiation at the same frequency.
The researchers used human neuroblastoma cells, which are derived from brain cancer tissue. These cells are commonly used in laboratory studies because they're readily available and respond predictably to various treatments, making them useful for initial safety assessments.