焦虑从进化角度来看具有适应性功能，有助于个体警觉潜在的危险。然而，在当代社会中，焦虑在青少年中的发病率显著上升，尤其是在发达国家。这一现象并不能完全用疫情等近期压力事件解释，而可能源于儿童早期（包括胎儿期和婴幼儿期）所接收到的环境压力信号。

The research followed more than 6,600 students from 71 schools, surveying them annually from Year 7 to Year 10. By Year 10, nearly 30 percent of Australian teens surveyed showed signs of major ...