Serotonin and depression - Definition

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Serotonin is a neurotransmitter, a substance which enables the transfer of nerve impulses between neurons. This molecule plays an important role in mood regulating, along with emotional response, aggression, eating habits, sexual practices, and sleeping habits. In this way, some scientists have established a link between depression and serotonin quantities in the synapses. Inhibitor drugs specifically active in recapturing serotonin are therefore used in treatments for depression.