Answer by
medstudent (20)
Serotonin is a neurotransmitter, i.e. it plays an important role in the nervous system. It is particularly important in the regulation of intestinal activity, but is also a major player in emotion. Serotonin deficiency can lead to emotional disorders such as depression, anxiety, etc. Serotonin supplements are frequently indicated when there is an emotional disorder caused by serotonin deficiency.