What Is Serotonin?

Serotonin is a hormone and a neurotransmitter that is involved in the function of several different organ systems in the body. A Happy Chemical: Serotonin and Mood Serotonin is sometimes known as the happy chemical, because it appears to play an important role in regulating mood, and low levels of serotonin in the brain have… Continue reading What Is Serotonin?

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