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Causes & Trajectories

A preprint protocol article describing the design and implementation of the landmark Digital Mental Health Study was posted on medRxiv on Oct. 1, 2025 and has been submitted for publication in a peer-reviewed journal. Senior authors of this protocol article from UCLA include Nelson Freimer, MD, UCLA Depression Grand Challenge director and DMHS principal investigator; Michelle Craske, PhD, DGC co-director.

UCLA Depression Grand Challenge logo
The UCLA Depression Grand Challenge, in collaboration with Apple, launched the National Digital Mental Health study, open for nationwide recruitment. The study leverages digital sensors in iPhone and Apple Watch to illuminate the relationship between objective, everyday measures (e.g., sleep, heart rate) and symptoms of depression and anxiety.

The Digital Health Measurement Collaborative Community (DATAcc) by the Digital Medicine Society (DiMe), in which Depression Grand Challenge team members participated, released a report on Feb. 4, 2025, detailing evidence-based, actionable recommendations to drive interest, investment, and direction for sensor-based digital health technology research and innovation.

The Perspective, “Advancing digital sensing in mental health research,” draws on insights, findings and related reports generated from the 2023 Workshop on Advancing Digital Sensing Tools for Mental Health, hosted by UCLA and sponsored by Wellcome, the National Institute of Mental Health and the DGC.
UCLA Depression Grand Challenge logo
The UCLA Depression Grand Challenge collaborated with a consortium led by The Digital Health Measurement Collaborative Community (DATAcc) by the Digital Medicine Society (DiMe) to submit a proposal to Wellcome, a global charitable organization that funds discovery research, for the opportunity to conduct scoping research to assess how digital sensing technologies may be leveraged to detect and treat mental health conditions.