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

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Published on: May 2, 2018

Hypersensitivity to RF fields emitted from CDMA cellular phones: a provocation study.

Ki Chang Nam¹, Ju Hyung Lee, Hyung Wook Noh

¹Korea Electrotechnology Research Institute, Ansan, Republic of Korea.

Bioelectromagnetics

|June 25, 2009

Summary

Electromagnetic hypersensitivity (EHS) symptoms are not caused by radio frequency (RF) radiation from Code Division Multiple Access (CDMA) phones. This study found no physiological or subjective effects in EHS or non-EHS groups exposed to RF radiation.

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Area of Science:

Environmental Health
Neuroscience
Biophysics

Background:

Public concern exists regarding health effects of electromagnetic fields (EMFs) from cellular phones.
Self-reported electromagnetic hypersensitivity (EHS) involves subjective symptoms attributed to radio frequency (RF) radiation.
EHS diagnosis is challenging due to reliance on subjective reporting.

Purpose of the Study:

To investigate the effects of Code Division Multiple Access (CDMA) phone RF exposure on physiological parameters and subjective symptoms in individuals with and without EHS.
To assess the perception of RF radiation in EHS and non-EHS groups.
To conduct a sham-controlled provocation study using CDMA phones.

Main Methods:

Two volunteer groups (18 EHS, 19 non-EHS) were exposed to real and sham RF radiation (300 mW, 30 minutes) from CDMA phones.
Investigated physiological parameters: heart rate, respiration rate, and heart rate variability (HRV).
Assessed subjective symptoms and perception of EMF.

Main Results:

No significant effects of RF exposure on physiological parameters (heart rate, respiration, HRV) were observed in either group.
No significant differences in subjective symptoms between real and sham RF exposure were found.
The EHS group did not demonstrate a greater ability to perceive EMF compared to the non-EHS group.

Conclusions:

Radio frequency (RF) radiation from CDMA cellular phones does not appear to affect physiological parameters or cause subjective symptoms in individuals reporting EHS.
There is no evidence to support that individuals with EHS have a heightened perception of EMF compared to those without EHS.