Scientists say that smartphones are changing the shape of people's skulls. Some people are spending so long looking at smartphones that a small bony bump is appearing above their neck. Doctors say the bump is large enough to feel by pressing the bottom of the skull, just above the neck. Dr David Shahar, a health scientist at the University of The Sunshine Coast in Australia, spoke to the BBC about the discovery. He said: "I have been a clinician for 20 years, and only in 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 over their smartphone.

科学家表示，智能手机正在改变人类头骨的形状。有些人长时间盯着智能手机看，脖子上方出现了一个小肿块。医生说，这个肿块足够大，按压头骨底部就能感觉到，就在脖子上方。澳大利亚阳光海岸大学的健康科学家David Shahar博士向BBC讲述了这一发现。他说:“我当了20年的临床医生，直到最近10年，我才越来越多地发现，我的病人的颅骨上有这种生长。”这种情况在18岁至30岁的人群中越来越常见，他们每天花很多时间低头看智能手机。

A study led by Dr Shahar looked at 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 at their phones. Doctors say the bump could come from constantly bending the neck at unnatural angles to look at digital devices. Our head weighs about 4.5 kilograms and bending our head at the same angle for 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.

沙哈尔博士领导的一项研究，观察了1200名18岁至86岁的人使用智能手机的情况。沙哈尔说，18到30岁的人比老一辈人更有可能有颅骨肿块。他说，随着我们低头看手机的时间越来越长，这种情况可能会越来越常见。医生说，这种肿块可能是由于在看数码设备时，颈部不断以不自然的角度弯曲造成的。我们的头部大约有4.5公斤重，长时间以同样的角度弯曲头部会使颈部紧张。医生称这种病毒为“短信脖”。他们说头骨撞击很少会导致健康问题。他们建议人们在颈部疼痛时改变姿势。