Cellular phone use does not acutely affect blood pressure or heart rate of humans

Abstract

A recent study raised concern about increase of resting blood pressure after a 35 min exposure to the radiofrequency (RF) field emitted by a 900 MHz cellular phone. In this randomized, double blind, placebo controlled crossover trial, 32 healthy subjects were submitted to 900 MHz (2 W), 1800 MHz (1 W) cellular phone exposure, and to sham exposure in separate sessions. Arterial blood pressure (arm cuff method) and heart rate were measured during and after the 35 min RF and sham exposure sessions. We evaluated cardiovascular responses in terms of blood pressure and heart rate during controlled breathing, spontaneous breathing, head-up tilt table test, Valsalva manoeuvre and deep breathing test. Arterial blood pressure and heart rate did not change significantly during or after the 35 min RF exposures at 900 MHz or 1800 MHz, compared to sham exposure. The results of this study indicate that exposure to a cellular phone, using 900 MHz or 1800 MHz with maximal allowed antenna powers, does not acutely change arterial blood pressure and heart rate.

The Effects of Electromagnetic Fields Generated from 1800 MHz Cell Phones on Erythrocyte Rheological Parameters and Zinc Level in Rats

“…The effects of cell phones on the cardiovascular system have been investigated by various researchers by examining parameters such as heart rate and blood pressure but the study results are controversial (13,14). To the best of our knowledge, the effects of exposure to EF on hemorheological parameters have not been studied before.…”

Effects of radiation emitted from mobile phones on short- term heart rate variability parameters

“…Ancak, gruplarda yer alan deneklerin çoğunda periyotlar arasında görü-len aynı yönlü küçük değişimler, eşleştirilmiş karşılaştırmaların anlamlı fark üretmesine neden olmuştur. Literatürde yer alan çalışmaların bazılarında, CT'den kaynaklanan radyasyona bağlı olarak KHD parametrelerinde değişimler oluşmadığı (7)(8)(9)(10), bazılarında ise oluştuğu belirtilmiştir (11)(12)(13). Bu çalışmalardan sadece Andrzejak ve ark.…”

“…Literatürde, cep telefonlarının (CT) kardiyak otonomik aktivite üzerindeki etkisini, KHD analizlerini kullanarak inceleyen çalışma-lar mevcuttur (7)(8)(9)(10)(11)(12)(13). Bu çalışmalardan elde edilen sonuçlara bakıldığında, birbirleriyle çelişmekte oldukları görülmektedir.…”

Assessment of intermittent UMTS electromagnetic field effects on blood circulation in the human auditory region using a near‐infrared system

“…Of three published studies on the effects of GSM exposure on HR, two found no effect [Braune et al, 2002;Tahvanainen et al, 2004], while one showed a small reduction in HR [Huber et al, 2003]. No effects were found in two studies using UMTS exposure [Eltiti et al, 2007[Eltiti et al, , 2009.…”

“…This increased HR indicates that the subjects relaxed less. A GSM study by Huber et al [2003] showed a reduction in HR during waking and stage 1 sleep, whereas, Braune et al [2002] and Tahvanainen et al [2004] found no effect of GSM-EMF on the HR in randomized crossover trials. In contrast to our results, Eltiti et al [2007Eltiti et al [ , 2009 did not find an effect on HR using a base station-like UMTS signal, which had a different carrier frequency of 2020 MHz and was continuous.…”