The indigenous people of Southeast Asia have been using the outer pericarp, or rind, of the mangosteen in folk remedies and medicines for thousands of years, based on its concentration of powerful nutrition and antioxidants.  There are many scientific breakthroughs related to the Mangosteen which have been documented over the past 500 years.  Mangosteen is full of Antioxidants.  The pericarp of the Mangosteen is particularly rich in Xanthones, which are biologically active, natural chemical substances found in only a few tropical plants. They are extremely potent antioxidants, which demonstrate a variety of proven medical benefits.