Epigallocatechin-3-gallate (EGCG), an ingredient of green tea, has been found to significantly reduce production of beta-amyloid, an Alzheimer's-related protein, which can accumulate abnormally in the brain and lead to nerve damage and memory loss. The reduction in beta-amyloid was found in both cell cultures and mouse brains. (J Neurosci 2005; 25: 8807 - 8814).