Can Cordless Phone Use Affect Your Heart?
In late 2010, Magda Havas, Ph.D, an electrosmog and electrosensitivity expert, published results of a groundbreaking study in the European Journal of Oncology which demonstrated that some wireless EMFs can adversely affect heart function. Using a NervExpress HRV Monitoring System and a Lifeforce UA-767 digital blood pressure monitor, Havas and her colleagues first measured baseline heart rate variability (HRV) and blood pressure in 25 generally healthy individuals. The researchers then continually monitored the subjects’ HRV and blood pressure during a series of exposures, in 3-minute intervals, to cordless phone base station emissions (2.4 GHz – which is about the same frequency as WiFi and microwave ovens).
The subjects, who had filled out wellness and EHS questionnaires prior to the physiological testing, were located approximately two feet from each base station and were unaware as to whether each base station was operative; background EMF was also carefully measured and accounted for. While 15 of the 25 did not demonstrate detectable cardiovascular changes in response to the EMF exposure, 10 of the subjects (40 percent) displayed increased heart rate, arrhythmias (irregular heartbeats, a.k.a. heart palpitations), or other disturbances in HRV. Four subjects experienced overt tachycardia, or intense and prolonged heart racing, after a second or two of exposure, with one subject’s heart almost tripling its rate. The 10 subjects with noticeable cardiovascular changes had HRV readings which evidenced strong increases in sympathetic nervous activity and decreases in parasympathetic activity.