Apple juice can be useful for rehydrating when you're sick. Its disease-fighting plant compounds may also protect your heart and brain as you age. However, apple juice is not very filling compared to whole apples, nor does it offer much fiber, vitamins, or minerals.
Potassium might be present in higher concentrations in this juice, which is good news for your heart health. Potassium can be a vasodilator, which means it can lower tension in your arteries and blood vessels. It might help in relieving pressure and strain on the cardiovascular system. Moreover, apple juice might prevent cholesterol formation in your arteries, which is often the major reason for heart attacks and other cardiovascular ailments.