noun

serotonin

serotonin

Serotonin is a chemical that affects mood.

Serotonin is a chemical that affects mood.

Low levels of serotonin are linked to depression.

Low levels of serotonin are linked to depression.

((as a noun)) a chemical in the body that helps carry signals along nerves Serotonin helps regulate sleep.

Synonyms: 5-hydroxytryptamine (5-HT)

From 'serum' + 'tonus' (tone) + '-in' (chemical), as it was found in blood serum and affects muscle tone.

Think of it as the 'serene-toning' chemical that keeps your mood calm and toned.

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