You might not think of potatoes as healthy food, but purple potatoes will change your mind. They are rich in an array of essential nutrients, including complex carbohydrates, potassium, vitamin C, and folic acid. In addition to antioxidants, they are packed with fibre, which can keep you feeling full and prevents constipation. Compared with regular potatoes, they have a lower glycaemic index and help regulate blood sugar and also cholesterol levels, reducing the risk of heart disease and diabetes.