Green tea extract and its components such as epigallocatechin gallate have been shown in some studies to inhibit tumor cell growth. It may have benefit against metastasis.

• 绿茶提取物和它的组分如茶多酚已在数个研究中显示出能有效阻碍肿瘤细胞生长。对肿瘤细胞的转移也有抑制作用。