• Researchers at McMaster University collected sleep and activity data from 93 adults across Canada who had previously recovered from depression. • Utilizing a research-grade actigraphy wearable device, over 32,000 days of data was generated. • Their research was published in JAMA Psychiatry . • The new research highlights a simple, yet powerful way to passively monitor relapse risk in people living with major depressive disorder (MDD), often detecting the probability of a relapse weeks or months before the episode occurs. • Approximately 60 per cent of people with MDD relapse within five years, even with treatment.
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