(STUDYFINDS) — Don’t want your child to have a cellphone? One recent study gives you good reason to make kids wait as long as possible for their first mobile device: it appears that radiation from phones can hurt a teenager’s memory.

A research team at the Swiss Tropical and Public Health Institute says that radio frequency electromagnetic fields (RF-EMF) may negatively affect an adolescent’s brain from cellphone exposure, causing potentially harmful effects on his or her memory performance. The authors say having the device close to one’s head lead to the greatest amount of radiation exposure.

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