Which neurotransmitter is primarily involved in mood regulation?

Serotonin plays a crucial role in mood regulation, primarily due to its influence on various emotional states and behaviors. This neurotransmitter is often referred to as a "feel-good" chemical because of its association with feelings of well-being and happiness. Research has demonstrated that imbalances in serotonin levels are linked to mood disorders such as depression and anxiety.

Many antidepressant medications target the serotonergic system, either by inhibiting the reuptake of serotonin or by enhancing its action at receptor sites. This is why serotonin is heavily studied and considered vital for mood stabilization. Additionally, serotonin's interactions with other neurotransmitters and its involvement in different brain regions related to mood further solidify its importance in emotional regulation.