Polyphenols have been shown to possess possible beneficial effects against neurodegenerative diseases in humans.

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 - Journal: GeroScience​Title: Hawaiian native herb Mamaki prevents dementia by ameliorating neuropathology and repairing neurons in four different mouse models of neurodegenerative diseases​Authors: Tomohiro Umeda, Keiko Shigemori, Rumi Uekado, Kazunori Matsuda, Takami Tomiyama* *Department of Translational Neuroscience, Osaka Metropolitan University ​Graduate School of Medicine​