Plum also assists the body in making healthy tissues and strong immune system. It prevents cold and flu and is helpful to people who suffer from recurrent infections. Fresh plums, especially yellow Mirabelle type, are a moderate source of vitamin A and beta carotene. Vitamin A is essential for good eye sight. It is also required for maintaining healthy mucus membranes and skin. Consumption of natural fruits rich in vitamin A has found to protect from lung and oral cavity cancers.