GABA is your brain’s natural calming signal. Here’s how Nevisan’s oolong leaves are processed to naturally amplify it.
Source: https://nevisan.in/journal/science-behind-gaba-tea
September 2025 · Nevisan Tea Journal
GABA is your brain’s natural calming signal. Here’s how Nevisan’s oolong leaves are processed to naturally amplify it.
GABA — gamma-aminobutyric acid — is the primary inhibitory neurotransmitter in your brain. In simple terms, it’s the signal your nervous system sends to slow down, stop over-firing, and relax. Low GABA is associated with anxiety, poor sleep, and mental restlessness.
Most teas contain very little GABA naturally. But when oolong tea leaves are exposed to nitrogen-rich, oxygen-free environments during processing (a technique developed in Japan in the 1980s), the leaves undergo a specific biochemical reaction that dramatically increases GABA content — often by 4 to 10 times.
Nevisan’s GABA Oolong is processed using this exact anaerobic method. The result is a tea that supports deep relaxation and mental clarity without sedation. Unlike chamomile (which promotes sleep), GABA tea allows you to be calm and focused simultaneously.
Regular consumption has been studied for blood pressure reduction, improved sleep quality, and anxiety management — making it one of the most functionally potent teas in our collection.