8/26/1998
Dr. Braune found a significant elevation in both systolic and diastolic blood pressure after exposure to EMFs compared with the unexposed session. They concluded that the increase in blood pressure readings only occurred in those test subjects using cell phones. They concluded that the increase in blood pressure resulted from constriction of the arteries caused by radiofrequency electromagnetic fields and that such an increase could have adverse effects on people with high blood pressure.
Link to research paper (subscription required)