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Saw Palmetto is a shrub tree with dark red berries, it is native to the United States, Europe and Africa. The palmetto berries were a popular source of food and medicine for Native Americans long before European settlement. The berries have been traditionally used for prostate health for many years, and early clinical data seemed to suggest the saw palmetto extract may help to maintain a healthy prostate; however, larger, more recent clinical data has not supported the efficacy of this product for prostate health.