Polyphenols in green tea are best known for being effective antioxidants in scavenging free radicals that can cause pre-mature aging and many modern degenerative diseases. The primary polyphenols found in green tea are flavonoids, namely catechins, which include catechin, epicatechin (EC), epigallocatechin (EGC), epicatechin gallate (ECG), and epigallocatechin gallate (EGCG). EGCG is viewed as the most significant active component, which has demonstrated greater antioxidant protection than vitamin C and E in experimental studies.
For centuries, green tea was believed to contain a special health-preserving and life-enhancing power. Some of the traditional health claims for green tea are as follows: