STATE COLLEGE, Pa. — Mushrooms may make our favorite pizza and pasta dishes taste delightfully better, but it turns out they may help keep our brains and hearts younger too. A new study finds that some of our favorite toadstools may have high concentrations of antioxidants with anti-aging benefits. Researchers at Penn State analyzed the chemical composition of a wide variety of types of mushrooms, finding that many contained high levels of ergothioneine and glutathione, both of which are important antioxidants. “What we found is that, without a doubt, mushrooms are highest dietary source of these two antioxidants taken together,...