When it comes to the nutritional value of fruits, blueberries are in a league of their own. Although not as high — calorie for calorie — in vitamins and minerals as vegetables, they’re packed with antioxidants. They are loaded with powerful antioxidant substances, including anthocyanins and various other plant compounds, some of which can cross the blood-brain barrier and exert protective effects on your brain (32). Several studies have examined the health effects of blueberries in humans. One study found that blueberries improved memory in older adults (33). Another study found that obese men and women with metabolic syndrome had a lowered blood pressure and reduced markers of oxidized LDL cholesterol when they added blueberries to their diet (34). This finding is in line with studies showing that blueberries increase the antioxidant value of your blood (35).
Multiple test-tube and animal studies also suggest that blueberries can help fight cancer (36, 37, 38).
Blueberries are very nutritious compared to most fruits and are loaded with powerful antioxidants, some of which can increase the antioxidant value of your blood and safeguard your brain.