02/05/2026
Your gut microbiome plays a powerful role in mental health by influencing key neuroactive compounds like GABA and glutathione. Certain gut bacteria convert glutamate into GABA, a calming neurotransmitter that slows brain activity and supports mood, relaxation, and sleep.
Chronic stress, infections, and any source of inflammation can shift glutamate down the pathway toward quinolinic acid (a neurotoxin) instead of GABA.
Bifidobacterium longum 1714 (B. longum 1714) is known as a "psychobiotic" because it can reduce perceived stress, improve mood, support brain function, and enhance sleep quality.
The microbiome also helps regulate glutathione, the body’s master antioxidant and a key player in detoxification and neurotransmitter balance. Glutathione influences the release of both GABA and dopamine and is produced from glutamate, cysteine, and glycine.
Together, these pathways highlight the psychobiome: the dynamic connection between gut microbes, brain chemistry, mood, and resilience.
Please let me know if you're curious about gut health and its influence on mental health.
