8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.

Altun G, Kaplan S

Bioeffects Seen

Authors not listed · 2025

Share:

Prenatal cell phone radiation exposure altered brain development and increased anxiety in offspring, with no protection from supplements.

Plain English Summary

Summary written for general audiences

This study exposed pregnant rats to 900 MHz cell phone radiation (similar to 2G/3G frequencies) for 2 hours daily throughout pregnancy, then examined brain changes in their male offspring. Researchers found fewer neurons in key appetite-control brain regions, increased anxiety behaviors, and altered expression of genes linked to obesity. Neither melatonin nor omega-3 supplements protected against these effects.

Why This Matters

This research adds to mounting evidence that prenatal EMF exposure can fundamentally alter brain development in ways that persist after birth. The 900 MHz frequency used mirrors older cell phone technologies still in use today, and the 2-hour daily exposure is well within typical smartphone usage patterns for many pregnant women. What makes this study particularly concerning is the focus on hypothalamic changes - this brain region controls appetite, metabolism, and weight regulation throughout life. The finding that protective supplements like melatonin and omega-3s offered no benefit suggests the biological disruption runs deeper than simple oxidative stress. The science demonstrates that the developing brain appears especially vulnerable to EMF during critical formation periods, with changes that could predispose children to metabolic disorders later in life.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 900 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 900 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (2025). Altun G, Kaplan S.
Show BibTeX
@article{altun_g_kaplan_s_ce3607,
  author = {Unknown},
  title = {Altun G, Kaplan S},
  year = {2025},
  doi = {10.3389/fpubh.2025.1583097},
  
}

Quick Questions About This Study

Yes, this study found that 900 MHz cell phone radiation exposure during pregnancy reduced neuron numbers in appetite-control brain regions and increased anxiety behaviors in male offspring, suggesting lasting developmental changes.
The research showed altered expression of obesity-related genes NPY and FTO in hypothalamic brain regions that control appetite and metabolism, along with fewer neurons in the arcuate nucleus after prenatal EMF exposure.
No, melatonin supplementation at 50 mg/kg daily did not prevent the neuronal loss, behavioral changes, or gene expression alterations caused by 900 MHz EMF exposure during pregnancy in this study.
Pregnant rats were exposed to 900 MHz EMF for just 2 hours daily throughout the 21-day pregnancy period, yet this was sufficient to cause measurable brain changes and behavioral effects in their offspring.
Male offspring spent more time in peripheral zones during open field tests and made fewer entries into open areas in elevated maze tests, indicating increased anxiety-like behaviors compared to unexposed controls.