Leprosy is likely one of the world’s oldest and most persistent ailments however the micro organism that trigger it could even have the shocking capacity to develop and regenerate a significant organ. Scientists have found that parasites related to leprosy can reprogram cells to extend the dimensions of a liver in grownup animals with out inflicting injury, scarring or tumors. The findings counsel the potential for adapting this pure course of to resume growing older livers and enhance healthspan — the size of time residing disease-free — in people.