What weed before bed actually does to your sleep

Key Points:

• An estimated 22 million U.S. adults currently use cannabis as a sleep aid, with 45 million having tried it, and about two-thirds of users report improved rest, according to the National Sleep Foundation.
• THC, the psychoactive compound in marijuana, can help people fall asleep faster by activating cannabinoid receptors, but research indicates it may reduce REM sleep, which is crucial for memory, emotional regulation, and dreaming.
• Reduced REM sleep from cannabis use may explain fewer or less vivid dreams, which can be beneficial for some, such as PTSD patients experiencing fewer nightmares, but may also impair memory and emotional processing over time.
• Chronic, heavy cannabis use can lead to tolerance, requiring higher doses to achieve the same sleep effects, and is linked to poorer sleep quality, including insomnia and longer time to fall asleep.
• When regular cannabis use stops, many experience "REM rebound," characterized by intense and vivid dreams and temporary insomnia, which can sometimes drive users back to cannabis to alleviate these symptoms.