Final inspection of frozen blueberries at the Atlantic Blueberry Co. Dan Charles/NPR hide caption

toggle caption Dan Charles/NPR

Picker Erika Nicolas Garcia, 18, fills her pail at a blueberry farm near Hillsboro, Ore. Anna King/Northwest Public Radio hide caption

toggle caption Anna King/Northwest Public Radio

Regular consumption of blueberries, such as these found at Butler's Orchard in Maryland, may prevent heart attacks in middle-aged women. Maggie Starbard/NPR hide caption

toggle caption Maggie Starbard/NPR