Serotonin and Mood Regulation

Neurotransmitters are vital biochemical substances in the nervous system that allow communication between neurons. One neurotransmitter, serotonin, is particularly known for its influence on mood regulation. It is produced in the brain and intestines and affects various psychological and physiological functions. Low levels of serotonin are often associated with mood disorders, including depression. In contrast, dopamine serves distinct functions, including the regulation of pleasure and reward pathways in the brain. Understanding the unique roles of different neurotransmitters can assist in diagnosing and treating mental health disorders.

Which neurotransmitter is most closely associated with mood regulation and is often implicated in mood disorders when present at low levels?