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Effects of 700MHz radiofrequency radiation (5G lower band) on the reproductive parameters of female Wistar rats

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Authors not listed · 2025

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Long-term 700MHz 5G exposure caused ovarian oxidative stress and tissue damage in female rats.

Plain English Summary

Summary written for general audiences

Researchers exposed female rats to 700MHz 5G radiation for either 10 days (6 hours daily) or 60 days (4 hours daily) to study reproductive effects. While hormone levels and DNA remained mostly normal, long-term exposure caused oxidative stress in ovaries and tissue changes including cystic follicles. The findings suggest prolonged 5G exposure may harm female reproductive organs through cellular damage.

Why This Matters

This study adds crucial data to our understanding of 5G's biological effects, specifically targeting the 700MHz frequency used in 5G networks worldwide. What makes this research particularly relevant is that 700MHz sits in the lower 5G band that many carriers are deploying for broader coverage. The finding that long-term exposure caused oxidative stress and ovarian tissue changes, while short-term exposure did not, suggests a cumulative damage effect that builds over time. The reality is that unlike these lab rats with controlled exposure periods, we're surrounded by 5G signals continuously. The oxidative stress markers and tissue changes observed here mirror patterns seen in other EMF research, reinforcing concerns about chronic low-level exposure. While the study didn't find DNA damage or major hormonal disruption, the cellular stress and structural changes in reproductive tissue represent early warning signs that deserve serious attention from regulators and the public.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 700 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 700 MHzPower lines50/60 HzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (2025). Effects of 700MHz radiofrequency radiation (5G lower band) on the reproductive parameters of female Wistar rats.
Show BibTeX
@article{effects_of_700mhz_radiofrequency_radiation_5g_lower_band_on_the_reproductive_parameters_of_female_wistar_rats_ce3725,
  author = {Unknown},
  title = {Effects of 700MHz radiofrequency radiation (5G lower band) on the reproductive parameters of female Wistar rats},
  year = {2025},
  doi = {10.1016/j.reprotox.2025.108910},
  
}
DOI: 10.1016/j.reprotox.2025.108910PubMed: 40220970

Quick Questions About This Study

Yes, this study found that 60 days of 700MHz exposure caused oxidative stress in rat ovaries and tissue changes including cystic follicles and abnormal blood vessels. Short-term exposure showed no tissue damage.
The research showed that 4 hours daily of 700MHz radiation for 60 days caused significant oxidative stress markers and structural changes in ovarian tissue, while 6 hours daily for 10 days did not.
No, the comet assay showed no DNA damage in either short-term or long-term exposure groups. However, cellular stress and tissue changes were observed with prolonged exposure.
Exposed ovaries showed elevated malondialdehyde levels and significant decreases in protective antioxidants including superoxide dismutase, sulfhydryl content, and ferric reducing antioxidant power compared to controls.
Estradiol and progesterone remained normal, but testosterone levels showed a slight yet significant increase in both exposure groups. Overall hormonal disruption was minimal compared to tissue changes.