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Abstract Title:

Effects of 900 MHz electromagnetic field on TSH and thyroid hormones in rats.

Abstract Source:

Toxicol Lett. 2005 Jul 4 ;157(3):257-62. Epub 2005 Apr 11. PMID: 15917150

Abstract Author(s):

Ahmet Koyu, Gokhan Cesur, Fehmi Ozguner, Mehmet Akdogan, Hakan Mollaoglu, Sukru Ozen

Article Affiliation:

Ahmet Koyu

Abstract:

In this study, the effects of exposure to a 900 megahertz (MHz) electromagnetic field (EMF) on serum thyroid stimulating hormone (TSH) and triiodothronine-thyroxin (T3-T4) hormones levels of adult male Sprague-Dawley rats were studied. Thirty rats were used in three independent groups, 10 of which were control (without stress and EMF), 10 of which were exposed to 900 MHz EMF and 10 of which were sham-exposed. The exposures were performed 30 min/day, for 5 days/week for 4 weeks to 900 MHz EMF. Sham-exposed animals were kept under the same environmental conditions as the study groups except with no EMF exposure. The concentration of TSH and T3-T4 hormones in the rat serum was measured by using an immunoradiometric assay (IRMA) method for TSH and a radio-immunoassay (RIA) method for T3 and T4 hormones. TSH values and T3-T4 at the 900 MHz EMF group were significantly lower than the sham-exposed group (p<0.01). There were no statistically significant differences in serum TSH values and T3-T4 hormone concentrations between the control and the sham-exposed group (p>0.05). These results indicate that 900 MHz EMF emitted by cellular telephones decrease serum TSH and T3-T4 levels.

Study Type : Animal Study

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