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Related Experiment Video

Updated: May 14, 2026

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

Published on: May 2, 2018

EHS subjects do not perceive RF EMF emitted from smart phones better than non-EHS subjects.

Min Kyung Kwon¹, Sung Kean Kim, Jeong Mo Koo

¹Brain Korea 21 Project for Medical Science, Yonsei University, Seoul, Korea. kmk5170@yuhs.ac

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

|February 1, 2013

Summary

People reporting electromagnetic hypersensitivity (EHS) cannot detect radio frequency-electromagnetic fields (RF-EMFs) from mobile phones better than others. This double-blind study found no difference in perception during real or sham exposure sessions.

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Area of Science:

Biophysics
Environmental Health
Neuroscience

Background:

Increasing smartphone use raises health concerns regarding radio frequency-electromagnetic fields (RF-EMFs).
A rise in self-reported electromagnetic hypersensitivity (EHS) symptoms like headaches and insomnia has been observed.
The ability of EHS individuals to detect RF-EMF exposure remains scientifically unverified.

Purpose of the Study:

To investigate whether individuals with self-reported EHS can perceive RF-EMF exposure from WCDMA mobile phones.
To compare the detection abilities of EHS subjects versus non-EHS subjects under controlled conditions.

Main Methods:

A double-blind study design was employed with two volunteer groups: 17 EHS and 20 non-EHS subjects.
Subjects underwent real and sham exposure sessions using a WCDMA module in a dummy phone (1950 MHz, 24 dBm, 1.57 W/kg SAR) for 32 minutes.
Perception of RF-EMF exposure was assessed during these controlled sessions.

Main Results:

No statistically significant difference was found in the ability to detect RF-EMFs between the EHS and non-EHS subject groups.
The study found no indication that EHS subjects possess a heightened sensitivity or perception to RF-EMF exposure compared to controls.

Conclusions:

The findings do not support the hypothesis that individuals with self-reported EHS can consciously perceive RF-EMF exposure.
This study suggests that subjective EHS symptoms may not be directly linked to the ability to detect mobile phone radiation.