A study funded in part by cell phone makers themselves finds cell phones and sleep may not mix. Doctors asked men and women between the ages of 18 and 45 to talk on cell phones before bed. Some were exposed to radiation similar to a wireless signal. Others talked on "phoney" phones that released no radiation.
Those exposed to radiation reported headaches, took longer to fall asleep and didn't sleep well through the night. Scientists believe cell phones radiation may activate the brain's stress system.
We all need deep sleep to feel rested and it's crucial for teens, who produce hormones while sleeping.
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