Previous studies had shown that certain microorganisms are able to produce the neurotransmitter gamma-aminobutyric acid. This substance, also referred to as GABA, is one of the most abundant signaling molecules in the nervous system, where it keeps the emotional part of our brain, the limbic system, in check. Many of our antianxiety medications, such as Valium, Xanax, and Klonopin, target the same signaling system, mimicking the effects of GABA.
