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 Agaricus bisporus extract

An extract of mushroom that is thought to help regulate skin cell production by inhibiting cell growth, particularly for use in psoriasis, but research in this regard is mixed (Sources: Free Radical Research, January 2006, pages 31-39; and British Journal of Dermatology, January 1999, pages 56-60). Internally, there is research showing it can inhibit the growth of breast cancer cells and colon cancer cells (Source: Cancer Research, October 1993, pages 4627-4632).