Mobile Phone Electromagnetic Fields Increase Resting Blood Pressure

German investigators report that exposure to electromagnetic fields during mobile phone use may increase resting blood pressure. Exposure of the right hemisphere to a radio-frequency electromagnetic field for 35 min causes an increase in sympathetic efferent activity with increases in resting blood pressure between 5 and 10 mm Hg, most likely due to more pronounced vasoconstriction.

Lancet June 20, 1998;351:1857-1858.