Half an hour of phone calls a week can raise blood pressure.

In the future, because of this, a heart attack or stroke can occur. The results of the study are the same for both men and women. The scientists took into account factors such as age, body mass index, family history of hypertension, smoking status, kidney function, and various blood tests. Scientists explain the effect of calls by the fact that mobile phones emit low radio frequency energy - it is this that raises blood pressure after short-term exposure.