Kirk here with a report about research conducted at Kumamoto University. Kumamoto International editor Hari Devkota is one of the co-authors of the academic paper that led to this article being written but, unfortunately, the article fails to mention his contribution. :( Here’s a link to the academic article (currently, the entire article is available free of charge):
https://www.mdpi.com/2072-6643/15/3/581
And here’s a link to a post on Hari’s Facebook page:
Finally, here’s a post about an earlier stage in this research that I wrote in 2019:
https://www.earth.com/news/matcha-tea-relieves-symptoms-of-depression/