Mushrooms (especially porcini) contain the highest levels of 2 powerful antioxidants, ergothioneine and glutathione, the latter of which is sometimes called the mother of all antioxidants and is a very important bodily Ergothioneine Stimulates Ca2+ Mediated Brain Derived Neurotrophic Factor Expression in NE 4C Nerve Cells ACS Omega Ergothioneine Benefits for Longevity, Brain and Skin Health A review on mushrooms as a versatile therapeutic agent with emphasis on its bioactive constituents for anticancer and antioxidant potential ERGO+ L Ergothioneine Marcus Institute of Integrative Health