Catechins in green tea are known to have antioxidant, fat-burning, and blood lipid-regulating effects.
In addition, docosahexaenoic acid (DHA), which is found in seafood commonly consumed by Japanese people, is known to reduce the risk of heart disease and depression in the elderly. Thus, the traditional Japanese diet centered on fish and seafood is beginning to attract worldwide attention as healthy, and a research paper has been published suggesting that the simultaneous intake of tea catechins and DHA may improve cognitive function in the elderly. The researchers divided the elderly residents of a special nursing home into two groups: one group consumed green tea extract [400 mg tea catechins] + fish oil [700 mg DHA] at the same time, and the other group consumed a placebo, and each group consumed the test diet for 6 months. Cognitive function was evaluated using the revised Hasegawa Simplified Intelligence Rating Scale. As a result, there was no change in the cognitive scale values in the placebo group before and after 6 months of intake, but the cognitive scale values increased significantly in the group that consumed tea extract + fish oil after 6 months. In particular, significant improvements were observed in “memory recall” and “verbal fluency. Although the consumption of green tea and seafood has declined in recent years, this study suggests that tea extract and DHA intake may help improve quality of life for the elderly. Article: Effects of simultaneous intake of green tea extract and fish oil on cognitive function and plasma lipids in the elderly Japanese Journal of Food Science and Technology 62(2), 88-94, 2015
Kita Shigezaemon’s comment:
The Japanese diet before the Genroku era (1688-1704) is also known to include a one-soup, three-course meal and a brown rice diet. Also, as a lifestyle color of Japanese people, there is fish as a food from the sea. I am not sure how to explain this to a vegan, but the combination of fish and Japanese green tea seems to be a healthy food. I recommend our upgraded, matcha paste, which makes it easy to drink matcha anywhere, anytime. It contains twice as much catechins as regular green tea. https://ujimatchapaste.jp/