Tryptophan to Serotonin: Your Gut's Mood Connection #shorts
25 May 2026 · 1 min
0:31
In this brief video, Dr. Tabatha Barber explains how the dietary amino acid tryptophan is metabolized in the gut into 5‑HTP and then serotonin. She describes how the serotonin produced in the gastrointestinal tract travels up the vagus nerve to reach brain neurons, where it acts as a neurotransmitter that promotes positive mental states. The speaker connects this biochemical pathway to her own experience of having been prescribed antidepressants, implying that insufficient gut‑derived serotonin may underlie mood disorders.
