Serotonin

What Is Serotonin?

Serotonin is a neurotransmitter involved in mood, sleep, digestion, and many other body functions. About 90% of it is produced in the gut.

Classification: Other › Serotonin

Key Takeaway

Serotonin is important for mood and sleep but is also central to gut motility and hormone regulation. Gut health, diet, and light exposure all influence serotonin balance.

Why This Matters

Serotonin is one of the most widely distributed neurotransmitters in the body. In the brain, it influences mood, anxiety, and sleep cycles. In the gut, which produces roughly 90% of the body’s serotonin, it regulates motility and secretion. Serotonin is synthesized from the amino acid tryptophan, found in protein-rich foods, and its production involves B vitamins, iron, and vitamin D. Natural approaches to support serotonin balance include sunlight exposure, movement, gut health, and adequate protein intake.

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Frequently Asked Questions

What is serotonin?

A neurotransmitter involved in mood, sleep, digestion, and many other functions.

Where is serotonin made?

About 90% is produced in the gut; the rest is made in the brain and platelets.

How can I support serotonin naturally?

Sunlight exposure, movement, gut health, adequate tryptophan (in protein), and sufficient B vitamins and vitamin D.