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Non-ionizing electromagnetic radiations, emitted by a cellular phone, modify cutaneous blood flow.

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Monfrecola G, Moffa G, Procaccini EM. · 2003

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Cell phone radiation increases blood flow by over 150% during calls, proving immediate cardiovascular responses to EMF exposure.

Plain English Summary

Summary written for general audiences

Italian researchers measured blood flow in the ear skin of 30 healthy volunteers while using a cellular phone. They found that phone radiation dramatically increased blood flow by 131-158% when the phone was actively transmitting, compared to when it was turned off. Even physical contact with the phone (when turned off) increased blood flow by 61%, but the electromagnetic radiation itself caused the largest increases.

Why This Matters

This study demonstrates that cellular phone radiation produces immediate, measurable changes in blood circulation at the point of contact. The science shows blood flow increases of over 150% during active phone use - a substantial physiological response that contradicts claims that non-ionizing radiation has no biological effects. What makes this research particularly compelling is its careful experimental design, testing multiple conditions to isolate the electromagnetic effects from simple physical contact or heat. The reality is that your body responds to phone radiation within moments of exposure, suggesting your cardiovascular system recognizes EMF as a biological stressor. While increased blood flow isn't necessarily harmful, it indicates your body is mounting a physiological response to radiation exposure - the kind of immediate biological effect that regulatory agencies often claim doesn't exist at non-thermal levels.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 300 MHz - 300 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 300 MHz - 300 GHzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study. The study examined exposure from: 300 MHz–300 GHz

Study Details

The aim of our study was to assess the effects of non-ionizing EMRs (frequency 3 x 10(8) to 3 x 10(11) Hz), emitted by CFs, on cutaneous blood flow in healthy volunteers.

Thirty healthy volunteers (14 male and 16 female; age: 18-53 years) entered the study. Measurements ...

The mean value of basal microflow (T0), expressed as perfusion units (PU), was 51.26+/-11.93 PU. Dur...

Cite This Study
Monfrecola G, Moffa G, Procaccini EM. (2003). Non-ionizing electromagnetic radiations, emitted by a cellular phone, modify cutaneous blood flow. Dermatology. 207(1):10-14, 2003.
Show BibTeX
@article{g_2003_nonionizing_electromagnetic_radiations_emitted_2437,
  author = {Monfrecola G and Moffa G and Procaccini EM. },
  title = {Non-ionizing electromagnetic radiations, emitted by a cellular phone, modify cutaneous blood flow.},
  year = {2003},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/12835541/},
}
PubMed: 12835541

Cited By (30 papers)

Quick Questions About This Study

Yes, according to a 2003 Italian study. Cell phone radiation dramatically increased blood flow in ear skin by 131-158% when actively transmitting. Even physical contact with a turned-off phone increased blood flow by 61%, but electromagnetic radiation caused the largest increases in 30 healthy volunteers.
Cell phone radiation increases skin blood circulation by 131-158% according to Italian researchers. They measured blood flow in ear skin of 30 volunteers and found the largest increases occurred when phones were actively transmitting, compared to much smaller 61% increases from physical contact alone.
Yes, simply touching a turned-off cell phone against your ear increases blood flow by 61%. However, when the same phone actively transmits radiation, blood flow increases much more dramatically by 131-158%, showing electromagnetic radiation has stronger biological effects than physical contact.
Ear skin blood circulation increases dramatically during phone calls. Italian researchers found blood flow jumped 131-158% when cell phones actively transmitted radiation to the ear area. The effect was statistically significant and much larger than the 61% increase from just physical contact.
Blood flow returns to normal levels after cell phone use ends. The 2003 study showed that when phones were removed from the ear, blood flow values returned to baseline levels similar to pre-exposure measurements, indicating the circulation changes are temporary during active radiation exposure.