People who have Diabetes can eat 3 to 4 servings of fruits each day. Many people restrict the consumption of fruits as they are worried about the sugar content. However, when fruits are consumed in the form of whole fruit, then it doesn't affect the blood sugar levels.  Fruits rich in fiber protect us against insulin resistance and fight against type 2 diabetes. The polyphenol content in fruits is known to control blood sugar levels. You must, however, not consume fruits like watermelon, ripe bananas, and mangoes because these fruits contain high amounts of sugar.