phones help people communicate with each one effectively and easily, but use them excessively can cause significant impact on health. First, the device reduces the body's immune system, which supported many types of bacteria, dust. Next, use your phone with high levels increase stress levels through continuous ringing, vibrating alert, and prompt, the risk of psychiatric problems. Finally, when talking on the phone too long, your ears warming headache, when it prolonged and continuous your memory will be reduced quickly. So the phone talking for a long time will affect a lot of health, we should restrict it.
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