Harnessing mushrooms for poultry nutrition: Boosting health, immunity, and productivity ScienceDirect Antioxidants In Mushrooms Dogs Naturally Mushrooms: A rich source of the antioxidants ergothioneine and glutathione ScienceDirect Amanita phalloides Wikipedia Mushrooms are full of antioxidants that may have anti aging potential Penn State University The nutritional benefit of mushrooms is remarkable. For centuries, mushrooms have been legendary for their nutritional value. But it's only been recently that mushrooms have been studied and their true power revealed.