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Neurobehavioural Changes and Brain Oxidative Stress Induced by Acute Exposure to GSM900 Mobile Phone Radiations in Zebrafish (Danio rerio).

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Nirwane A, Sridhar V, Majumdar A. · 2016

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Daily one-hour mobile phone radiation exposure caused anxiety and learning problems in fish at levels similar to human phone use.

Plain English Summary

Summary written for general audiences

Researchers exposed zebrafish to cell phone radiation at levels similar to those from mobile phones (1.34 W/kg SAR) for one hour daily over two weeks. The fish showed increased anxiety-like behaviors, impaired learning ability, and brain damage from oxidative stress. This study demonstrates that even brief daily exposure to mobile phone radiation can alter brain function and damage brain cells.

Why This Matters

This study provides compelling evidence that mobile phone radiation affects brain function at exposure levels comparable to what humans experience during phone calls. The SAR level of 1.34 W/kg falls within the range of typical mobile phone emissions, making these findings directly relevant to everyday phone use. What makes this research particularly significant is that it measured both behavioral changes and the underlying biological mechanism - oxidative stress in brain tissue. The fact that zebrafish developed anxiety-like behaviors and learning impairments after just 14 days of one-hour daily exposures suggests our brains may be more vulnerable to RF radiation than regulatory agencies assume. The researchers also demonstrated that melatonin could reverse these effects, pointing to oxidative stress as a key pathway through which mobile phone radiation harms the brain.

Exposure Details

SAR
1.34 W/kg
Source/Device
GSM900 Mobile Phone
Exposure Duration
1 hr for 14 days

Exposure Context

This study used 1.34 W/kg for SAR (device absorption):

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 1.34 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Extreme Concern rangeFCC limit is 1x higher than this level
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

Study Details

This study investigated the Neurobehavioural Changes and Brain Oxidative Stress Induced by Acute Exposure to GSM900 Mobile Phone Radiations in Zebrafish (Danio rerio)

we evaluated the impact of GSM900MP (GSM900MP) radiation exposure daily for 1 hr for 14 days with th...

Our study revealed that, GSM900MP radiation exposure, significantly decreased time spent near social...

This study traced GSM900MP radiation exposure induced neurobehavioral aberrations and alterations in brain oxidative status. Furthermore, MT proved to be a promising therapeutic candidate in ameliorating such outcomes in zebrafish.

Cite This Study
Nirwane A, Sridhar V, Majumdar A. (2016). Neurobehavioural Changes and Brain Oxidative Stress Induced by Acute Exposure to GSM900 Mobile Phone Radiations in Zebrafish (Danio rerio). Toxicol Res. 2016 Apr;32(2):123-32. doi: 10.5487/TR.2016.32.2.123. Epub 2016 Apr 30.
Show BibTeX
@article{a_2016_neurobehavioural_changes_and_brain_559,
  author = {Nirwane A and Sridhar V and Majumdar A.},
  title = {Neurobehavioural Changes and Brain Oxidative Stress Induced by Acute Exposure to GSM900 Mobile Phone Radiations in Zebrafish (Danio rerio).},
  year = {2016},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/27123163/},
}
PubMed: 27123163

Cited By (20 papers)

Quick Questions About This Study

Yes, zebrafish exposed to GSM 900 MHz radiation for just one hour daily showed increased anxiety-like behaviors within two weeks. The fish spent significantly more time in the bottom of tanks and exhibited more freezing behavior, indicating heightened anxiety responses from brief daily phone radiation exposure.
Research shows zebrafish exposed to 1.34 W/kg SAR GSM radiation spent less time exploring novel environments in learning tests. This specific absorption rate, similar to mobile phone levels, significantly impaired the fish's learning ability compared to unexposed control groups after two weeks of daily exposure.
Zebrafish exposed to GSM 900 MHz radiation showed decreased social interaction, spending significantly less time near other fish. This suggests that mobile phone radiation at typical power levels can disrupt normal social behaviors and reduce animals' tendency to seek companionship with their own species.
Daily GSM 900 MHz exposure decreased protective brain enzymes (superoxide dismutase and catalase) while increasing harmful lipid peroxidation. These changes indicate that even brief daily phone radiation exposure compromises the brain's natural antioxidant defense system, potentially leading to cellular damage from oxidative stress.
Yes, melatonin treatment significantly reversed the anxiety behaviors, learning impairments, and brain oxidative damage caused by GSM 900 MHz radiation in zebrafish. This suggests melatonin may offer protective benefits against mobile phone radiation-induced brain effects, though human applications require further research.