Baisao wrote: ↑Sun Sep 22, 2019 3:25 pm
...Variously, people have tried to describe teas as l-theanine, caffeine, catechins, micotoxins, etc. with very little understanding of how these (and other!) chemicals interact with our bodies...
I found this video intriguing as there is an interview with a researcher about a feasibility study of using GABA tea and gyokuro to improve cognitive and coordination function in children with autism.
https://www.youtube.com/watch?v=f2Zw15bS3mQ
The hypothesis being that those with autism tend to have a leaky blood-brain barrier that would allow GABA from tea to make it to the brain. The results of the study seem to warrant further research.
I have not been diagnosed with autism, but I have been medically diagnosed by a gastroenterologist with Celiac Disease, so my blood brain barrier may be leakier than normal as well.
Greens like kabusecha, matcha, gyokuro, and some senchas have a very large relaxing impact on me. Physiologically my heart rate goes down by 10+ bpm (when compared to baseline both at rest and active), and mentally I become very chill. I am generally an anxious person, so the difference is quite apparent. Colors and sounds can become more vivid as well, so, when I get the rare chance of time to myself, I have a session outside. There is a limit on returns, however, as if I drink too much the caffeine becomes too much, and I can get into sensory overload/panic territory. Also senchas high in caffeine and low on umami/theanine can be a bad time for me, especially if I go out in public.
I have tried a few roasted/aged Japanese teas like kamairicha, hojicha, bancha, and black tea. These require about half the leaf I normally use with the steamed greens. They seem to have a neutral effect on me, and just supply my daily dose of caffeine to avert a headache. I will say I have had a couple of kamairichas and a bancha that were more like oolongs and found them to have a relaxing effect
@Baisao your experiences are intriguing. Thank you for sharing.
I am also a long-term meditator who also does not drink alcohol or smoke or anything. Tea is enough for me.
I don't know much about TCM, but this video and my experience seems relevant to this discussion, so I thought I would share.
Recently I purchased some GABA/gabaron sencha I will be trying out shortly to see if it has any effect on me. I had only know about Taiwanese GABA tea, but, according to Wikipedia anyway, the process for producing GABA tea was created in Japan.