Catechins are antioxidants. Antioxidants neutralize free radicals and prevent oxidation. Matcha is very high in a catechin called, EGCG (Epigallocatechin Gallate). It is a very powerful antioxidant that acts as a strong anti-inflammatory. Matcha studies have shown that it can strongly help with cancer prevention because of the high amount of EGCG. Also, it is great to treat and prevent arthritis, cardiovascular diseases, neurodegenerative diseases, and diabetes.