Many people turn to cannabis to unwind, ease anxiety, or soothe pain, but not all cannabis products affect the body the same way—especially when it comes to sleep. Cannabis-derived products Cannabidiol (CBD) is often the go-to for those seeking relaxation without the high, while tetrahydrocannabinol (THC) delivers the psychoactive effects. Now, there is an ongoing debate on whether THC is helpful or detrimental to sleep. How Does It Impact Sleep?According to experts, while going high on THC may lead you to fall asleep quickly, it can affect different stages of your sleep because it interacts with receptors in your brain. "While THC initially decreases sleep onset time by interacting with cannabinoid receptors and modulating neurotransmitter systems, it significantly alters normal sleep architecture — typically increasing deep sleep while suppressing crucial REM sleep," said Dr Jason Singh, Chief Medical Officer at One Oak Medical Group. He also noted that THC can impact sleep patterns differently in the long term.Sleep Foundation says 70% of young adults use cannabis recreationally to improve their sleep, and 85% of medical marijuana users claim it helps because it relieves pain. Singh said his patients agree, but there is a catch. He underscored that although all his patients report subjective improvements in sleep quality, objective measurements do reveal more fragmented sleep patterns. Falling asleep in a high state may increase non-REM sleep, which might make you feel well-rested. However, it also reduces the time spent in REM (rapid eye movement) sleep—the stage associated with dreaming, emotional processing, and memory improvement. According to the Sleep Foundation, adults need about two hours of REM sleep each night.Singh added, “With regular use, tolerance develops as CB1 receptors downregulate in the brain and this diminishes cannabis's sleep-inducing effects over time. When use stops, withdrawal commonly causes REM rebound and insomnia.”Long-Term Effects On BrainAlthough people with chronic pain may notice better sleep while using cannabis, experts often advise against its use as the sole sleep aid. "I usually tell my patients that while cannabis may temporarily improve sleep initiation, its disruption of normal sleep cycling long-term is not helpful for sleep quality,' Dr Singh said. The Sleep Foundation also recommends that children and adolescents avoid cannabis for sleep due to its effects on brain development.Over time, long-term cannabis use may alter the structure and function of the brain. A 2018 review in The American Journal of Drug and Alcohol Abuse found that heavy cannabis use can impair thinking and memory for at least a week after use. Brain imaging studies have shown smaller brain regions involved in memory, learning, and emotional regulation in cannabis users.Regular users who stop may experience withdrawal symptoms such as irritability, low mood, appetite changes, and sleep issues. However, according to a 2017 review in Substance Abuse and Rehabilitation, brain receptors begin recovering within two days and may return to normal in about four weeks. ALSO READ: 6 Tips To Take Care Of Your Gut Health By Celebrity Doctor Steven Grundy