GSM radiocellular telephones do not disturb the secretion of antepituitary hormones in humans

Abstract

It is known that the endocrine system of experimental animals is susceptible to perturbation by radiofrequency (RF) radiation. Because of the recent interest in health and safety issues of cellular telephones, an experiment was designed to evaluate the effect of a 900 MHz RF radiation emitted by a Global System for Mobile radiotelephone (217 Hz impulses, one‐eighth duty cycle, 2 W peak power) on human endocrine functions. Twenty healthy male volunteers aged from 19 to 40 were inducted in the present experiment. Each subject was exposed to RF radiation through the use of a cellular phone 2 h/day, 5 days/wk, for 1 month. Subjects were their own control. End points were serum adrenocorticotropin, thyrotropin, growth hormone, prolactin, luteinizing hormone, and follicle stimulating hormone concentrations. These end points were determined in nine weekly blood samples obtained starting 3 weeks before the commencement of the exposure and ending 2 weeks after exposures. All but one blood sample was drawn 48 h after each weekly session. The seventh drawing was performed the morning after the last weekly exposure. Within each individual, the preexposure hormone concentration was used as a control. Results indicated that all hormone concentrations remained within normal physiologic ranges. A difference was not noted among the nine weekly samples in five of six hormones studied. There was a significant change only in thyrotropin concentration, showing a 21% decrease on the seventh sampling. Because this change recovered fully during the postexposure period, it is concluded that 1 month of intermittent exposures to RF radiation from a cellular telephone does not induce a long‐lasting or cumulative effect on the hormone secretion rate of the anterior pituitary gland in humans. Bioelectromagnetics 19:271–278, 1998. © 1998 Wiley‐Liss, Inc.

Challenging cell phone impact on reproduction: A Review

“…A study in humans did not reveal an adverse outcome by RF-EMR on male serum reproductive hormones [16]. Twenty healthy male volunteers aged 19 to 40 were studied.…”

“…Within each individual, the preexposure hormone concentration was used as a control. One month of intermittent exposure to cell phone RF-EMR did not induce a longlasting or cumulative effect on the hormone secretion rate of the anterior pituitary gland in humans [16].…”

Bone morphogenetic protein expression in newborn rat kidneys after prenatal exposure to radiofrequency radiation

“…RFR at very low power intensity, but still higher than in our case, has been shown to interfere with neurotransmitter levels of the hippocampal cholinergic system [Testylier et al, 2002], as well as of the Purkinje cells in the cerebellum [Mausset et al, 2001]. In man, GSM-RFR has been shown to cause a transient decrease in thyrotropin levels [de Seze et al, 1998]. …”

Microwave effects on the nervous system

“…They did not find melatonin changes related to MP relevant exposures. These investigators also studied anterior pituitary hormones (serum adrenocorticotropin, thyrotropin, growth hormone, prolactin, luteinizing hormone, and follicle stimulating hormone) and did not find significant alterations following exposures [de Seze et al, 1998]. Mann et al [1998] exposed humans to low level 900 MHz MW at night and found no changes in serum melatonin levels.…”