Benefits of a Green Powder (Matcha)

High in antioxidants
Antioxidants help stabilize harmful free radicals, which are compounds that can damage cells and cause chronic disease.

In fact, by one estimate, the number of certain catechins in matcha is up to 137 times greater than in other types of green tea. 

Including matcha in your diet could increase your antioxidant intake, which may help prevent cell damage and even lower your risk of several chronic diseases.

https://www.healthline.com/nutrition/7-benefits-of-matcha-tea#1.-High-in-antioxidants