WHY IT MATTERS: If you are using cannabis to manage sleep problems, understanding that it may ease the feeling of sleeplessness without fully restoring normal sleep cycles can help you make more informed decisions about long-term use and when to seek additional evaluation. CLINICAL OVERVIEW: Cannabis and sleep have a complicated relationship that standard research frameworks struggle to capture accurately. Many patients report meaningful subjective improvements in sleep onset and overnight waking, yet controlled studies frequently show that THC can suppress REM sleep, reduce sleep architecture quality over time, and create rebound insomnia upon discontinuation.