Results obtained from this study, as the first human study on this topic, showed a significant alteration of TSH level in mobile phone users compared to those who had not used mobiles previously. Theses findings confirm early reports that showed alterations of TSH or thyroid hormones following exposure to EMF sources. Further large-scale research is required to clarify the extent of alteration caused by mobile phone use on the function of human glands.

Alterations in TSH and Thyroid Hormones following Mobile Phone Use Abstract Objectives: In recent years, the widespread use of mobile phones has lead to a public debate about possible detrimental effects on human health. In spite of years of research, there is still a great controversy regarding the possibility of induction of any significant physiological effects in humans by microwave radiations emitted by mobile phones. This study aims to investigate the effects of electromagnetic fields induced by the Global System for Mobile communications (GSM) mobile phones on the Thyroid Stimulating Hormone (TSH) and thyroid hormones in humans. Methods: 77 healthy university students participated in this study. The levels of T3, T4 and TSH were measured by using appropriate enzyme-linked immunosorbent assay (ELISA) kits (Human, Germany). Results: The average levels of T3, T4 and TSH in students who moderately used mobile phones were 1.25±0.27 ng/ml, 7.76±1.73 μg/dl and 4.25±2.12 μu/l respectively. The levels in the students who severely used mobile phones were 1.18±0.30, 7.75±1.14 and 3.75±2.05 respectively. In non-users, the levels were 1.15±0.27, 8.42±2.72 and 2.70±1.75, respectively. The difference among the levels of TSH in these 3 groups was statistically significant (P<0 .05="" 05="" 07="" 1department="" 2009="" 2department="" 3department="" :="" a="" accepted:="" address="" affects="" alterations="" and="" as="" assess="" associations="" aug="" axis="" based="" be="" between="" compensatory="" concentrations="" concerned="" concluded="" conclusion:="" correspondence="" degrees="" deleterious="" department="" dr.="" dysfunction="" e-mail:="" effects="" excessive="" far="" findings="" first="" following="" font="" from="" higher="" hormones.="" human="" hypothalamic-pituitary-thyroid="" in="" iran.="" iran="" is="" it="" level="" levels="" low="" may="" mean="" medical="" medicine="" microwaves="" minor="" mmortazavi="" mobile="" mortazavi="" normal="" observed.="" occur="" of="" on="" paramedical="" phone="" phones.="" possible="" radiology="" received="" reprint="" request="" rise="" sciences="" seems="" sep="" shiraz="" smj="" study="" sums.ac.ir="" t3="" t4="" than="" that="" the="" these="" this="" thyroid="" to:="" to="" tsh="" university="" use="" users="" were="" with="">

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