When one's whole career and self-image has been based in academia and then the academic career ends, it can easily give a feeling of failure and worthlessness, even in the most normal circumstances.

I couldn't find statistics about postdocs or tenure-track professors, but this meta-study on PhD students and medical residents gives a suicide attempt rate of 0.8%.

https://www.sciencedirect.com/science/article/pii/S002239562...