As mental health professionals, we continually strive to understand the workings of the human brain and the factors that influence mental well-being. One crucial neurotransmitter often under scrutiny is serotonin, 5-hydroxytryptamine (5-HT). Serotonin is pivotal in regulating mood, emotions, sleep, and other bodily functions. When serotonin levels are deficient, it can impact an individual's mental health. This blog post will explore the complexities of serotonin deficiency, its causes, symptoms, and potential treatment approaches.