Why Stopping Cannabis Use Can Trigger Vivid Dreams
Many people use cannabis to help them sleep. While some evidence indicates that cannabis may aid sleep, much remains unknown about its impact on sleep quality.
What is the Impact of THC and CBD on Sleep?
What we do know is that THC (tetrahydrocannabinol) is associated with a reduction in rapid eye movement (REM) sleep and an increase in slow-wave sleep. In contrast, another major cannabinoid, CBD (cannabidiol), has been linked with either an increase or a decrease in REM, depending on the dosage. However, many of the studies conducted have focused on animals rather than humans, and the ratio of THC to CBD can vary significantly between different cannabis products. Additionally, there are many other minor cannabinoids, such as CBN (cannabinol), that can also affect sleep. As a result, understanding the overall impact can be a complex process.
Why is REM Sleep Important?
REM sleep is essential for dreaming. Typically, if you wake up during the REM stage, you will be able to remember your dreams. Therefore, a decrease in REM sleep results in a lower likelihood of recalling dreams.
What Happens When Regular Cannabis Users Stop?
When individuals who use cannabis regularly suddenly stop, they may experience withdrawal effects that trigger reactions in their bodies opposite to those they experienced while using cannabis. Consequently, during withdrawal, these individuals may find it takes longer to fall asleep, experience more REM sleep, and have more vivid and memorable dreams that are easier to recall.
THC may have memory-impairing effects that suppress dream recollection, which may rebound once cannabis use is discontinued.
How Long Do Changes in Dreaming Last After Quitting?
While most withdrawal symptoms associated with cannabis, such as changes in appetite and anxiety, typically resolve within a few weeks, the effects on dreaming can persist for up to 45 days. For someone who has been a regular daily user of cannabis for many years, suddenly recalling dreams vividly can be surprising and noticeable.*What Does the Research Tell Us?
Due to the restrictions surrounding cannabis research, it remains unclear whether a specific dosage enhances or hinders sleep, how the method of consumption (inhaling versus ingesting) affects sleep, or whether effects can be modified by combining THC and CBD.
Additionally, most investigations into cannabis and dreaming were conducted in the 1970s, a period when the cannabis landscape was vastly different from today. In contrast, there has been significantly more research on the effects of alcohol on sleep, which operates differently on the brain and body, but also appears to decrease REM sleep in large quantities and alter sleep architecture.
How Long Does THC Stay in the Body?
THC is lipophilic, meaning it binds to fat molecules and can remain in the body for up to 30 days, gradually being released into the bloodstream. Various factors can influence the amount of THC present in the body at any given time.
Do Cannabis Products Actually Improve Sleep?
Although some cannabis products and brands claim to improve sleep, there is currently insufficient evidence to confirm these assertions. However, the impact of cannabis on dreaming suggests that it at least disrupts certain elements of the dreaming process.
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Study finds CBN improves sleep without intoxicating effects
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Liz Filmer
