Medical journal The Lancet reported on a double-blind study that showed that radiation from cell phones causes an increase of blood pressure. http://www.thelancet.com/journals/lancet/article/PIIS0140-6736%2805%2979287-4/fulltext

Dr Braune and colleagues in Freiburg, Germany, attached cell phones to the right side of the heads of subjects, switching the phones on and off by remote control.

The blood pressure of the subjects significantly rose each time, due to constrictive effect on blood vessels. The researchers determined that this level of increase would be more than enough to trigger heart attack or stroke in someone already at severe risk.

Dr. Thomas M. Rau, Medical Director of the Paracelsus Clinic in Switzerland, found that people living near radio towers or cell towers appear to have increased cardiac symptoms.

Blood Pressure