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

A study led Dr Shahar looked the smartphone use of 1,200 people aged 18 to 86. Shahar said 18 to 30-year-olds were more likely to have the skull bumps than older generations. He said the bumps will probably be more common as we spend longer bending our necks while looking our phones. Doctors say the bump could come constantly bending the neck unnatural angles to look digital devices. Our head weighs 4.5 kilograms and bending our head the same angle a long time can strain 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 becomes sore.

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