Matcha Tea for Anxiety?

Research shows that drinking Matcha tea can reduce anxiety

Original article on EurekAlert

Many different countries have a tea culture, and Japanese Matcha tea is growing in popularity around the world. In Japan, Matcha has a long history of being used for various medicinal purposes. It has been suspected to have various beneficial effects to health, but relatively little scientific evidence supported that claim. Now, a group of Japanese researchers from Kumamoto University has shown that anxious behavior is reduced after consuming Matcha powder or Matcha extract. Its calming effects appear to be due to mechanisms that activate dopamine D1 receptors and serotonin 5-HT1A receptors, both of which are closely related to anxious behavior.

Matcha is the finely ground powder of new leaves from shade-grown (90% shade) Camellia sinensis green tea bushes. The tea (and food flavoring) is enjoyed around the world. In Japan, historical medicinal uses for Matcha included helping people relax, preventing obesity, and treatment of skin conditions. The researchers, therefore, sought to determine its various beneficial effects.

The “elevated plus maze” test is an elevated, plus-shaped, narrow platform with two walled arms that provide safety for the test subject, typically a mouse. It is used as an anxiety test for rodents with the idea that animals experiencing higher anxiety will spend more time in the safer walled-off areas. Using this test, researchers found that mouse anxiety was reduced after consuming Matcha powder or Matcha extract. A behavioral pharmacological analysis further revealed that Matcha and Matcha extracts reduce anxiety by activating dopamine D1 and serotonin 5-HT1A receptors.

Kurauchi, Y. et al., 2019. Anxiolytic activities of Matcha tea powder, extracts, and fractions in mice: Contribution of dopamine D1 receptor- and serotonin 5-HT1A receptor-mediated mechanisms. Journal of Functional Foods, 59, pp.301-308.

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