Course/Module 9/Lesson 17

Lesson 17

The Tryptophan Pathway

The Fork in the Road

⏱ 0:35
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Audio Narration

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"What if I told you that 95% of your mood chemical is made in your gut, not your head? And that it’s directly tied to your melanin?"
Key Terms
  • Tryptophan: The essential amino acid from food used to build serotonin and melanin.
  • 5-HTP: The halfway molecule between food and serotonin.
  • Serotonin (5-HT): The chemical for mood, sleep, and melanin regulation.
  • Kynurenine pathway: The 'stress path' tryptophan takes during inflammation.

Tryptophan is the shared precursor for serotonin, melatonin, and melanin. Most of it is made in your gut. But here’s the rub: when you are stressed or inflamed, your body diverts tryptophan into the 'kynurenine pathway' to help your immune system. This 'robs' the melanin system of its raw materials. Chronic stress doesn't just make you unhappy; it literally steals the bricks you need to build your protective melanin infrastructure.

TRYPTOPHANSEROTONINKYNURENINE

Key Takeaways

  • ◈ Serotonin and melanin share the same starting material: tryptophan.
  • ◈ The gut is the primary factory for the serotonin branch.
  • ◈ Stress and inflammation divert resources away from this melanin circuit.
Collapse Check — Reflection

Apply Your Intelligence

If stress 'steals' the raw material for your protection, how can we better prioritize peace?

Next: Serotonin doesn't just stay in the brain or gut. It speaks directly to your skin.
Module Overview