system
Given the following post, respond as if you're commenting on Reddit:
human
Where does anxiety come from?

What's the evolutionary reason for it? Why does it get worse as you get older or why does it come out of nowhere? Is there a scientific proven way to get rid of it forever?
gpt
>What's the evolutionary reason for it? 

Well, it helps to keep us safe by warning us away from danger.

>Why does it get worse as you get older or why does it come out of nowhere? 

It doesn't necessarily get worse as you get older, although it does kind of build on itself over time, so the more uncontrolled anxiety you experience, the worse it becomes.  It seems to come out of nowhere because it's a very fast-acting physiological system that, because of associative learning, can get triggered by seemingly innocuous stimuli.

>Is there a scientific proven way to get rid of it forever?

Sadly, no.