Decrease your chances of a heart attack this much by eating three or more servings of berries a week. Researchers from the Harvard School of Public Health tracked the diets of 93,600 women in a study that spanned 18 years. They found that three or more half-cup servings of fresh or frozen strawberries or blueberries per week could lower a woman’s risk of a heart attack by about a third. The berries contain anthocyanin, flavonoids that give the fruits their bright colors. They help improve blood flow and counter the build up of plaque.
Circulation, January 2013