Blueberries are acidic and contain high levels of hydroxycinnamic acid and hydroxybenzoic acid. In addition, blueberries contain a high level of antioxidants, which give blueberries their distinct blue color.
Hydroxycinnamic acids include caffeic acid, ferulic acid and coumaric acid, while hydroxybenzoic acids include gallic acid and protocatechuic acid. Blueberries are loaded with vitamins, including vitamin K, manganese and vitamin C, and are a good source of fiber. Eating blueberries regularly can help support the cardiovascular system, cognitive abilities, blood sugar challenges and eye health. Blueberries also have anti-cancer benefits.
The three types of common blueberries include highbush blueberries, lowbush blueberries and rabbiteye blueberries. Highbush blueberries are native to North America.