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Electromagnetic fields produced by GSM cellular phones and heart rate variability

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Parazzini M, Ravazzani P, Tognola G, Thuróczy G, Molnar FB, Sacchettini A, Ardesi G, Mainardi LT · 2007

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Cell phone radiation produced subtle but measurable changes in heart rhythm control, especially during physical stress responses.

Plain English Summary

Summary written for general audiences

Researchers exposed 26 healthy people to cell phone radiation at 900 MHz and measured heart rate variability (how consistently the heart beats). They found subtle changes in heart rhythm patterns, especially when participants stood up, suggesting cell phone signals may affect the nervous system's control of the heart.

Why This Matters

This study adds to a growing body of research suggesting that cell phone radiation may subtly influence our cardiovascular system, even at exposure levels typical of everyday phone use. The 2-watt GSM exposure used here matches what your phone produces during calls, making these findings directly relevant to daily life. What's particularly noteworthy is that the effects appeared strongest during sympathetic nervous system activation - essentially when the body was already under mild stress from standing up. This suggests that EMF exposure might not cause problems on its own, but could amplify the cardiovascular effects of other stressors. While the researchers characterized these as 'weak' interactions, the reality is that even subtle disruptions to heart rate variability can have long-term health implications, as HRV is a key marker of cardiovascular health and stress resilience.

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: 900 MHz (2 W) GSM

Study Details

The study was designed to assess cardiac regulatory mechanism in different autonomic nervous system (ANS) states during exposure to low‐intensity EMF.

In this study, 26 healthy young volunteers were submitted to 900 MHz (2 W) GSM cellular phone exposu...

The analysis of the data show there was no statistically significant effect due to EMF exposure both on main (i.e., RR mean) and most of the other HRV parameters. A weak interaction between some HRV parameters (i.e., SDNN, TINN, and triangular index in time domain and LF power in frequency domain analysis) and RF exposure was observed and this effect seems to be gathered around the sympathetic response to stand.

Cite This Study
Parazzini M, Ravazzani P, Tognola G, Thuróczy G, Molnar FB, Sacchettini A, Ardesi G, Mainardi LT (2007). Electromagnetic fields produced by GSM cellular phones and heart rate variability Bioelectromagnetics. 28(2):122-129, 2007.
Show BibTeX
@article{m_2007_electromagnetic_fields_produced_by_1525,
  author = {Parazzini M and Ravazzani P and Tognola G and Thuróczy G and Molnar FB and Sacchettini A and Ardesi G and Mainardi LT},
  title = {Electromagnetic fields produced by GSM cellular phones and heart rate variability},
  year = {2007},
  doi = {10.1002/bem.20275},
  url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/bem.20275},
}
DOI: 10.1002/bem.20275

Cited By (53 papers)

View all 53 citing papers on Semantic Scholar

Quick Questions About This Study

A 2007 study found cell phone radiation caused subtle changes in heart rhythm patterns, particularly when people stood up. However, researchers detected no statistically significant effects on main heart rate measures, suggesting any impact is minimal.
Research shows GSM phone radiation may cause weak interactions with heart rate variability, especially during position changes like standing. The 2007 study found no major heart rate effects, indicating minimal cardiovascular risk from normal phone use.
Studies suggest cell phone radiation can cause minor changes in heart rhythm patterns. A 2007 research study detected subtle effects on heart rate variability when participants stood up, but found no significant impact on overall heart function.
Current research indicates minimal heart risks from mobile phone radiation. A 2007 study found weak effects on certain heart rhythm measurements during position changes, but no statistically significant impact on main cardiovascular parameters.
Phone radiation may subtly affect nervous system control of the heart, particularly the sympathetic response during activities like standing. However, a 2007 study found these effects were weak and didn't significantly alter main heart rate measurements.