Sleep, a vital physiological process, plays an integral role in maintaining overall health and well-being. The intricate interplay of various neurotransmitters and hormones within our body influences our sleep patterns and quality. Among these, serotonin stands out as a key player in regulating sleep, impacting both its onset and quality. This article delves into the profound relationship between serotonin levels and sleep patterns, shedding light on how imbalances can lead to sleep disorders like insomnia.