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Effects of mobile phone exposure (GSM 900 and WCDMA/UMTS) on polysomnography based sleep quality: An intra- and inter-individual perspective.

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Danker-Hopfe H, Dorn H, Bolz T, Peter A, Hansen ML, Eggert T, Sauter C. · 2015

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Cell phone radiation measurably altered sleep patterns in 90% of study participants, suggesting individual vulnerability varies widely.

Plain English Summary

Summary written for general audiences

German researchers exposed 30 young men to cell phone radiation from GSM 900MHz and WCDMA/UMTS devices while monitoring their sleep with medical-grade equipment. They found that 90% of participants showed measurable changes in their sleep patterns, with the most consistent effect being increased REM sleep in about one-third of the subjects. The study suggests that cell phone radiation can affect individual sleep quality, though the changes varied greatly between people.

Why This Matters

This research adds important nuance to our understanding of how cell phone radiation affects sleep. What makes this study particularly valuable is its focus on individual responses rather than just group averages. The finding that 90% of participants showed some measurable sleep changes is striking, even though the specific effects varied widely between individuals. The consistent increase in REM sleep in one-third of subjects suggests a biological mechanism at work, which the researchers theorize may be thermal in nature. What this means for you is that your nightly exposure to cell phone radiation may be affecting your sleep quality in ways that are difficult to detect without sophisticated monitoring equipment. The reality is that we all respond differently to EMF exposure, which explains why some people report sleep problems near their phones while others don't notice any effects.

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. The study examined exposure from: GSM 900MHz

Study Details

In a double-blind, randomized, sham-controlled cross-over study possible effects of electromagnetic fields emitted by pulsed Global System for Mobile Communications (GSM) 900 and Wideband Code-Division Multiple Access (WCDMA)/Universal Mobile Telecommunications System (WCDMA/UMTS) devices on sleep were analysed.

Thirty healthy young men (range 18-30 years) were exposed three times per exposure condition while t...

Data analyses at the individual level indicate that RF-EMF effects are observed in 90% of the indivi...

The results underline that sleep of individuals can be affected differently. The observations found here may indicate an underlying thermal mechanism of RF-EMF on human REM sleep. Nevertheless, the effect of an increase in stage R sleep in one third of the individuals does not necessarily indicate a disturbance of sleep.

Cite This Study
Danker-Hopfe H, Dorn H, Bolz T, Peter A, Hansen ML, Eggert T, Sauter C. (2015). Effects of mobile phone exposure (GSM 900 and WCDMA/UMTS) on polysomnography based sleep quality: An intra- and inter-individual perspective. Environ Res. 145:50-60, 2015.
Show BibTeX
@article{h_2015_effects_of_mobile_phone_2013,
  author = {Danker-Hopfe H and Dorn H and Bolz T and Peter A and Hansen ML and Eggert T and Sauter C.},
  title = {Effects of mobile phone exposure (GSM 900 and WCDMA/UMTS) on polysomnography based sleep quality: An intra- and inter-individual perspective.},
  year = {2015},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/26618505/},
}
PubMed: 26618505

Cited By (54 papers)

View all 54 citing papers on Semantic Scholar

Quick Questions About This Study

Yes, German researchers found that GSM 900MHz radiation increased REM sleep in one-third of study participants. The 2015 study exposed 30 young men to cell phone radiation and found consistent REM sleep increases, though effects varied significantly between individuals.
A 2015 German study found that 90% of participants showed measurable sleep pattern changes when exposed to WCDMA/UMTS cell phone radiation. However, the changes varied greatly between individuals, with some showing improvements and others showing deteriorations in sleep quality.
No, the 2015 Danker-Hopfe study found highly individual responses to cell phone radiation exposure. While 90% of participants showed some sleep changes, the effects varied in direction and severity, with some people experiencing sleep improvements rather than problems.
Yes, medical-grade polysomnography equipment successfully detected sleep changes from GSM 900MHz and WCDMA radiation exposure in a controlled 2015 study. The technology revealed that all measured sleep variables were affected in at least four of the 30 participants tested.
Not necessarily, according to 2015 German research. While one-third of participants showed increased REM sleep under both GSM 900MHz and WCDMA exposure, researchers noted that this increase doesn't automatically indicate sleep disturbance or health problems.