Ask the Doctor: Serotonin, Pink Eye in Adults; Adenoids & Immune Health

Find out what serotonin is and how it can affect your brain.

Q: A friend of mine takes an antidepressant that affects serotonin. What is serotonin, and what does it do? A: Serotonin is a neurotransmitter—a chemical that transmits messages between neurons in the brain and to the central nervous system. Serotonin has been described as a “feel-good” neurotransmitter, since it is believed to boost mood, decrease […]

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