As a medical professional with expertise in organ transplantation, I can confirm that the human body is indeed capable of functioning with just a portion of the liver. This is due to the liver's remarkable ability to regenerate. When a person donates a part of their liver, whether it's through a living transplant or other medical procedure, the remaining liver can regenerate to its full size and function. This process typically occurs within a matter of weeks. The liver's regenerative capacity is unique among human organs, which is why it's possible for both the donor and the recipient to lead healthy lives following a liver transplant. read more >>

This type of transplant is called a living transplant. People who donate a portion of their liver can live healthy lives with the remaining liver. ... Because the liver is the only organ in the body able to regenerate, a transplanted portion of a liver can rebuild to normal capacity within weeks.read more >>