From March 2018:
“There is a mental health crisis in graduate education, and research institutions need to take action to address it. That’s the take-home message from a global survey of Ph.D. and master’s students published today, which adds to the meager but growing literature on the subject and corroborates anecdotal evidence and discussion about the topic from recent years, including a number of personal tragedies and numerous testimonials and concerns expressed on social media and elsewhere.”