I think it's a good thing that more people now talk about mental health issues. Unfortunately those at higher risk of developing problems are hard to identify. But a team at the University of Cambridge may have developed a method to screen for depression - in teenage boys at least. Boys with both high levels of the hormone cortisol and depressive mood symptoms had a higher risk.
The test isn't ready for clinical use yet, but if this could help give people more support then I think it's worth pursuing.