Food Health: Scientists Discover the Hidden Medicinal Benefits of Mushrooms Here's How Mushrooms Could Help Fight Ageing 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 L ergothioneine, an antioxidant found in certain mushrooms, is thought to neutralise damaging molecules in uterine cells that may contribute to period pain Ergothioneine Wikipedia