Poor night’s sleep linked to tablets

If you’re having trouble sleeping at night, the answer may be to close your iPad.

More and more people are taking their tablets to bed with them to surf the web and check Facebook or email before switching off the light.

Researchers at the Lighting Research Centre, at the Rensselaer Polytechnic Institute in New York, claim the blueish light from an iPad screen can mimic daylight, thereby convincing the brain it is still daytime.