Cortisol joins the ranks with CRP as a depression biomarker. Teenage boys with high cortisol have 14 times the risk.

FTA:

Teenage boys with symptoms of depression and raised levels of the stress hormone cortisol are up to 14 times more likely to develop major depression than those without these traits, Cambridge researchers have found. - See more at: http://www.cam.ac.uk/research/news/biomarker-for-depression-could-improve-diagnosis-and-treatment#sthash.kJadrhZ4.dpuf