Ergothioneine is less common in today’s diet—certain foods may boost levels.Ergothioneine (ERGO), a potent antioxidant made by fungi and soil microbes, is making waves in the world of nutrition. However, many may wonder what it actually is.
Research shows that ERGO is important for brain health. When animals are deprived of ERGO, it harms both brain cell growth and cognitive function. People with dementia also tend to have lower levels of ERGO in their blood compared with healthy people of the same age.





