Plum is very rich in polyphenol antioxidants, especially anthocyanins, having anti-inflammatory effects and improving heart health. Sorbitol, a compound present in plums and prunes, can aid digestion and relieve constipation acting as a natural laxative. Plum extract may also help kill breast cancer cells. Although high in sugars, plum is rich in fiber and can help regulate blood sugar. Antioxidants found in this fruit can also benefit brain health and prevent some diseases, like Alzheimer’s.