Scientists have found that purple fruits and vegetables may protect against diabetes.

Finnish researchers have found that red and purple fruits and vegetables contain pigments called anthocyanins that can prevent diabetes. Purple potatoes are especially beneficial for health. Anthocyanins may reduce the risk of diabetes by affecting metabolism, gut microbiota, and inflammation. This substance is found in abundance in purple potatoes, radishes, purple carrots, and red cabbage. Foods such as blueberries and mulberries contain mostly non-acylated anthocyanins. They are less digestible, but they have other important functions. For example, they improve gut health, suppress inflammation, and regulate glucose and lipid metabolism, which reduces the risk of developing diabetes.