SAN FRANCISCO (CBS Sacramento) – Seeing spikes in your blood pressure? It could be attributed to your consistent use of cell phones.

A new study has found that mobile use of cell phones can lead to increased blood pressure. The study, which was done by ScienceDaily, was presented at the annual meeting for the American Society of Hypertension.

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Italian researchers from Guglielmo da Saliceto Hospital found that their subjects’ blood pressure readings increased from 121/77 to 129/82 while they consistently utilized their phones. For individuals who were involved in more than 30 daily calls, systolic rises were not as extreme.

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To this point, the researchers haven’t been able to fully formulate the cause and effect for their findings. The study found that the majority of the subjects tended to be younger individuals and that those subjects whom made more than 30 calls a day were found to have a stronger working relationship with their phones.

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The research comes at a time when more than one-third of U.S. adults suffer from high blood pressure and/or hypertension. High blood pressure is believed to be responsible for $47 billion in medical expenses each year.