Guanábana, or soursop, has a tart pulp, which is used in sweetened drinks, ice cream, milkshakes, and pudding.

People in many parts of the Amazon plant guanábana in home gardens or in fields with other crops, but this sensitive fruit often succumbs to insects or disease.

Could it help humans stave off illness? Scientists are studying the possibility that the leaves, seeds, and stems of guanábana and its relatives may contain natural cancer-fighting chemicals.