Apples, with their low glycemic index, release glucose slowly into the bloodstream and do not cause a rapid spike in blood glucose levels. This makes them a great choice for maintaining steady energy levels and supporting balanced blood sugar control. Furthermore, the polyphenols in apples may help to improve insulin sensitivity, making it easier for your body to maintain stable blood sugar levels. However, like all fruits, apples do contain carbohydrates and should be counted as part of your overall carbohydrate intake.