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Effect of Low Level Subchronic Microwave Radiation on Rat Brain.

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Deshmukh PS, Megha K, Nasare N, Banerjee BD, Ahmed RS, Abegaonkar MP, Tripathi AK, Mediratta PK. · 2016

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This study shows brain damage and DNA breaks at microwave levels 3,000 times lower than FCC safety limits.

Plain English Summary

Summary written for general audiences

Researchers exposed rats to cell phone radiation (900 MHz) at extremely low levels for 90 days. The rats developed impaired learning and memory, elevated stress proteins, and DNA damage in brain cells at radiation levels thousands of times below current safety standards.

Why This Matters

This study delivers a sobering message about microwave radiation safety. The researchers used SAR levels around 0.0006 W/kg-roughly 3,000 times lower than the FCC's 1.6 W/kg limit for cell phones. Yet even at these minimal exposure levels, the rats experienced measurable brain damage including cognitive decline and DNA breaks. What makes this research particularly significant is the 90-day exposure period, which better reflects real-world chronic exposure patterns than the brief heating studies typically used to set safety standards. The fact that multiple frequencies produced similar harmful effects across different brain measures strengthens the biological plausibility of these findings. You don't have to accept that current safety standards adequately protect your brain when independent research consistently demonstrates biological effects at exposures far below regulatory limits.

Exposure Details

SAR
0.0005953 W/kg
Source/Device
900 MHz
Exposure Duration
90 days

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 0.0005953 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the No Concern rangeFCC limit is 2,688x 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

The present study was designed to investigate the effects of subchronic low level microwave radiation (MWR) on cognitive function, heat shock protein 70 (HSP70) level and DNA damage in brain of Fischer rats.

Experiments were performed on male Fischer rats exposed to microwave radiation for 90 days at three ...

Microwave exposure at 900–900–2450 MHz with SAR values as mentioned above lead to decline in cogniti...

The results of the present study suggest that low level microwave exposure at frequencies 900, 1800, and 2450 MHz may lead to hazardous effects on brain.

Cite This Study
Deshmukh PS, Megha K, Nasare N, Banerjee BD, Ahmed RS, Abegaonkar MP, Tripathi AK, Mediratta PK. (2016). Effect of Low Level Subchronic Microwave Radiation on Rat Brain. Biomed Environ Sci. 29(12):858-867, 2016.
Show BibTeX
@article{ps_2016_effect_of_low_level_750,
  author = {Deshmukh PS and Megha K and Nasare N and Banerjee BD and Ahmed RS and Abegaonkar MP and Tripathi AK and Mediratta PK.},
  title = {Effect of Low Level Subchronic Microwave Radiation on Rat Brain.},
  year = {2016},
  
  url = {https://www.sciencedirect.com/science/article/pii/S089539881730003X},
}

Quick Questions About This Study

Yes, a 2016 study found that rats exposed to 900 MHz cell phone radiation for 90 days showed significant impairment in learning and memory abilities. The cognitive decline occurred at radiation levels thousands of times below current safety standards.
Research by Deshmukh et al. found that 90-day exposure to low-level 900 MHz radiation significantly elevated HSP70 stress protein levels in rat brains. This indicates cellular stress response even at extremely low radiation levels.
Yes, the 2016 rat study demonstrated that 900 MHz radiation at SAR values thousands of times below safety limits still caused measurable DNA damage in brain cells after 90 days of exposure.
The study found that exposure to 900, 1800, and 2450 MHz frequencies led to cognitive decline, increased stress proteins, and DNA damage in rat brains, suggesting hazardous effects across multiple cell phone frequencies.
The research showed that 90 days of continuous low-level 900 MHz exposure was sufficient to produce measurable cognitive impairment, elevated stress proteins, and DNA damage in rat brain tissue.