Forty percent of interviewed clinicians were clinically depressed.

In the past 10 years, the culture of medicine in California has changed radically. A study of 454 clinicians by the Sacramento Medical Society indicated that most had felt the effects of these changes deeply.1 Forty percent of those interviewed were clinically depressed. Most reported that they had thought about leaving the profession at least once in the past 12 months. Even more surprising, many would not want their children to go into medicine nor would they choose medicine as a career again.
This is not a California phenomenon. An unprecedented number of physicians nationwide, many of them young, are dropping out or seeking early retirement.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1071213/