A bit of stress is a normal part of our daily lives, which can even be good for us. Overcoming stressful events can make us more resilient. But when the stress is severe or chronic – for example caused by the breakdown of a marriage or partnership, death in the family or bullying – it needs to be dealt with immediately.

https://theconversation.com/how-chronic-stress-changes-the-brain-and-what-you-can-do-to-reverse-the-damage-133194