A new review finds that wild blueberries support heart and gut health. An extensive scientific review identifies them as an exceptional food for cardiometabolic health. The strongest evidence shows improvement in blood vessel function. Encouraging signs are observed in the area of blood pressure, cholesterol and blood sugar. It is also about improving gut health and cognitive functions. Researchers report that these benefits can be felt within hours or weeks. The reason is the unique blend of polyphenols and fiber in the berries.[1][2][3][4][5][6][8]