Rethinking sleep and mental health, with Philip Gehrman, PhD

Sleep functions as a critical pillar of mental and physical health, serving as more than a mere consequence of psychological distress. Chronic sleep deprivation acts as a significant risk factor for developing conditions like depression, anxiety, and dementia, as the brain relies on deep sleep to clear neurotoxic waste products like beta-amyloid. Dr. Philip Gehrman, a clinical psychology professor at the University of Pennsylvania, highlights that Cognitive Behavioral Therapy for Insomnia (CBTI) offers a superior, long-term alternative to medication for sleep disorders. Furthermore, maintaining consistent circadian rhythms is essential, as misalignment—often forced upon "night owls" or shift workers—detrimentally affects emotional regulation. While consumer wearables have popularized sleep monitoring, these devices frequently lack clinical accuracy and can induce "orthosomnia," where an obsessive focus on data quality paradoxically disrupts the very rest users aim to improve.