(3) Guava Explanation: The humble guava is the healthiest fruit for the human body, while the pineapple is at the bottom of this index. The first-of-its-kind research to evaluate the amount of natural antioxidant levels of 14 fresh fruits commonly consumed in India has come up with surprising revelations. Guava came in at the top, followed by the Indian plum. Mango, pomegranate, custard apple and apple are among the other fruits that offer, the highest amount of antioxidants.