Soursop (Gaviola) contains unique antioxidants that can fight against cancer. These include acetogenins, alkaloids, and quinolones. These antioxidant components are known for their ability to reduce the size of tumors, essentially reducing the effects of cancer. Soursop is also rich in phytonutrients that contain an abundant number of antioxidants such as flavonoids, tannins, lactones, and coumarins and all of them are said to combat various diseases. In addition, several studies also suggest that the antioxidants present in the soursop can help treat eye disease. According to the National Eye Institute, the soursop plant contains vitamin C and E, zinc, and beta carotene—all of which can reduce macular degeneration by 25%.