Study identifies ‘circadian depression’ as affecting nearly a quarter of more than 11,000 participantsGet our breaking news email, free app or daily news podcastAustralian researchers have identified a new subtype of depression – termed “circadian depression” – linked to disruptions in the body’s internal clock, which they believe is less responsive to traditional antidepressant treatments.In a study published in British Journal of Psychiatry, involving clinical and genetic data fr