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Scientists say that smartphones are the shape of people's skulls. Some people are so long looking at smartphones that a small bony bump is above their neck. Doctors say the bump large enough to feel by the bottom of the skull, just above the neck. Dr David Shahar, a health scientist at the University of The Sunshine Coast in Australia, to the BBC about the discovery. He said: "I have a clinician for 20 years, and only in the last decade, increasingly, I have been that my patients have this growth on the skull." The bump is more frequent among 18 to 30-year-olds who many hours a day hunched over their smartphone.

A study by Dr Shahar at the smartphone use of 1,200 people aged 18 to 86. Shahar said 18 to 30-year-olds were more likely to the skull bumps than older generations. He said the bumps will probably more common as we longer bending our necks while looking at their phones. Doctors say the bump could from constantly bending the neck at unnatural angles to at digital devices. Our head about 4.5 kilograms and bending our head at the same angle for a long time can the neck. Doctors are calling this strain "text neck". They say the skull bump rarely causes health issues. They advised people to change their posture if their neck sore.

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