In a study, researchers found that mushrooms have high amounts of the ergothioneine and glutathione, both important antioxidants, said the senior author. The researchers also found that the amounts the two compounds Ergothioneine as a promising natural antioxidant: bioactivities, therapeutic potential, and industrial applications Food & Function (RSC Publishing) DOI:10.1039 D5FO02337H 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 Dietary Sources of the Longevity Vitamin Ergothioneine