Blueberries are a powerful source of antioxidants:
Antioxidants are one of the most important chemical compounds in the body because our  body uses them to eliminate free radicals that cause the oxidation of cells and aging. By consuming blueberries on a regular basis, we are providing a large amount of antioxidants to our body that helps us neutralize free radicals and strengthen collagen which gives our skin a  younger and healthier appearance.  This is highlighted by the Human Nutrition Research Center on Aging in the United States, which conducted multiple studies on how blueberries help prevent the signs of aging.