6,486 Studies Reviewed. 85.2% of Original Studies Found Biological Effects. The Evidence is Clear.
Shield Your Body

Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.

Cardiovascular

Effects of RF exposure of teenagers and adults by CDMA cellular phones.

No Effects Found

Nam KC, Kim SW, Kim SC, Kim DW · 2006

View Original Abstract
Share:

Cell phone radiation caused measurable skin resistance changes in teenagers and men, even when vital signs remained normal.

Plain English Summary

Summary written for general audiences

Researchers exposed 42 volunteers (21 teenagers and 21 adults) to radio frequency radiation from CDMA cell phones for 30 minutes while measuring vital signs like blood pressure, heart rate, and breathing. The study found no changes in these cardiovascular measures, though skin resistance decreased temporarily in teenagers and males during exposure. This suggests that short-term cell phone use doesn't immediately affect basic vital signs, though the skin resistance change indicates the body does respond to the radiation in measurable ways.

Why This Matters

While this study found no immediate cardiovascular effects from 30 minutes of cell phone radiation exposure, the significant decrease in skin resistance among teenagers and males reveals that the body does respond to RF radiation in measurable ways. The 300 milliwatt exposure level used here is similar to what you experience during normal cell phone calls. What's particularly noteworthy is that teenagers showed a stronger response than adults, which aligns with growing research suggesting younger people may be more susceptible to EMF effects. The reality is that this study only looked at immediate, short-term effects on basic vital signs. It doesn't address the more complex biological changes that research shows can occur with chronic exposure, nor does it examine the cellular and molecular effects that may not manifest as immediate changes in heart rate or blood pressure.

Exposure Information

Specific exposure levels were not quantified in this study. The study examined exposure from: CDMA cellular phone Duration: half an hour

Study Details

To study the effects of RF exposure of teenagers and adults by CDMA cellular phones.

In this study, two volunteer groups consisting of 21 teenagers and 21 adults were exposed to 300 mW...

All the parameters for both groups were unaffected during the exposure except for decreased skin res...

Cite This Study
Nam KC, Kim SW, Kim SC, Kim DW (2006). Effects of RF exposure of teenagers and adults by CDMA cellular phones. Bioelectromagnetics. 27(7):509-514, 2006.
Show BibTeX
@article{kc_2006_effects_of_rf_exposure_3266,
  author = {Nam KC and Kim SW and Kim SC and Kim DW},
  title = {Effects of RF exposure of teenagers and adults by CDMA cellular phones.},
  year = {2006},
  doi = {10.1002/bem.20229},
  url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/bem.20229},
}
DOI: 10.1002/bem.20229

Cited By (42 papers)

Quick Questions About This Study

A 2006 study found no changes in heart rate, blood pressure, or breathing when 42 people used CDMA cell phones for 30 minutes. However, the phones did cause temporary changes in skin resistance, showing the body responds to cell phone radiation in measurable ways.
Research measuring blood pressure during 30-minute cell phone exposure found no significant changes in either teenagers or adults. The 2006 CDMA study monitored vital signs continuously but detected no cardiovascular effects, though skin resistance did decrease temporarily during use.
A study exposing 21 teenagers to cell phone radiation for 30 minutes found no changes in heart rate, blood pressure, or breathing patterns. However, teenagers showed decreased skin resistance during exposure, indicating their bodies responded differently to the radiation than expected.
Cell phone radiation doesn't appear to immediately affect basic vital signs like heart rate, blood pressure, or breathing based on 30-minute exposure studies. However, skin resistance decreases during use, particularly in teenagers and males, suggesting the body does respond measurably.
Short-term cell phone use shows no immediate cardiovascular risks according to research measuring heart rate, blood pressure, and breathing during 30-minute exposures. The study found no significant changes in these vital signs, though skin resistance decreased temporarily during use.