For a summary of the many health benefits of blueberries, see this Huffington Post article by Leo Galland MD (integrated medicine physician and author).
Blueberries are antioxidant powerhouses. See this 2004 article listing the foods highest in antioxidants. Note: Wild blueberries are higher in antioxidants than cultivated blueberries (larger ones).
And I’ve always wondered if wild blueberries were essentially organic. Unfortunately they are not organic. For an explanation, see the FAQ: “Does Wyman’s offer organic wild blueberries?”