Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.
No effects of 900 MHz and 1800 MHz electromagnetic field emitted from cellular phone on nocturnal serum melatonin levels in rats.
Koyu A, Ozguner F, Cesur G, Gokalp O, Mollaoglu H, Caliskan S, Delibas N. · 2005
View Original AbstractCell phone radiation showed no effect on melatonin levels in this 4-week rat study, though longer exposures remain unstudied.
Plain English Summary
Researchers exposed rats to cell phone frequencies (900 MHz and 1800 MHz) for 30 minutes daily over four weeks and measured their nighttime melatonin levels. They found no significant differences in melatonin production between exposed and unexposed rats. This suggests that typical cell phone radiation may not disrupt the body's natural sleep hormone production, at least under these specific exposure conditions.
Study Details
In this study, the effects of exposure to a 900 MHz and 1800 MHz electromagnetic field (EMF) on serum nocturnal melatonin levels of adult male Sprague-Dawley rats were studied.
Thirty rats were used in three independent groups, 10 of which were exposed to 900 MHz, 10 of which ...
There were no statistically significant differences in serum melatonin concentrations between the 90...
These results indicate that mobile phones, emitting 900 and 1800 MHz EMF, have no effect on nocturnal serum melatonin levels in rats.
Show BibTeX
@article{a_2005_no_effects_of_900_3155,
author = {Koyu A and Ozguner F and Cesur G and Gokalp O and Mollaoglu H and Caliskan S and Delibas N.},
title = {No effects of 900 MHz and 1800 MHz electromagnetic field emitted from cellular phone on nocturnal serum melatonin levels in rats.},
year = {2005},
url = {https://pubmed.ncbi.nlm.nih.gov/15986574/},
}