This Week In Wellness a study in the New England Journal of Medicine has shown that working long hours as a first year Medical resident leads to depression with those working 90 hours a week reporting 3 times the rate of depression as those working 45 hours.

https://www.news-medical.net/news/20221020/Depression-risk-increases-with-number-of-hours-worked-in-stressful-jobs.aspx

https://www.nejm.org/doi/10.1056/NEJMc2210365