How Insomnia Fragments REM Sleep and Causes Depression: The Neuroscience Explained
TL;DR: Chronic insomnia fragments REM sleep through persistent hyperarousal, preventing emotional memory consolidation and creating a vicious cycle that breeds depression—but cognitive-behavioral therapy for insomnia can break the cycle faster than antidepressants alone. Insomnia has a hidden mechanism. You lie awake for hours, but the real problem isn’t the wakefulness—it’s what happens to REM sleep, …
