The human organ capable of regenerating is the liver. Unlike most organs, the liver has the remarkable ability to regenerate itself after injury or partial removal. It can regenerate to its original size even if as much as 75% of it is removed. This remarkable capability is vital for healing from liver diseases, damage from toxins, or surgical procedures. However, this regenerative capacity can be overwhelmed by chronic liver conditions, such as cirrhosis or hepatitis, highlighting the need for maintaining liver health through a balanced diet and avoiding excessive alcohol consumption.