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Which Human Organ Can Regenerate Itself?
biologymedicine
Quick Answer
The liver can regenerate to its full size from as little as 25 % of its original tissue.
The Full Story
The liver is the only human internal organ capable of significant regeneration. If up to 75 % of liver tissue is removed or damaged, the remaining tissue can regrow to approximately its original size within weeks to months through a process called compensatory hyperplasia (existing cells enlarge and divide). This ability makes living-donor liver transplants possible. The skin also regenerates well, and bone can heal fractures, but no other internal organ matches the liver's regenerative capacity.
Key Facts
1.Liver regeneration was known to the ancient Greeks — the myth of Prometheus describes an eagle eating his liver daily, with it regrowing overnight.
2.The liver performs over 500 functions, including detoxification, protein synthesis, and bile production.
3.A donated liver lobe typically regrows to about 80 % of normal size in 2–3 months.
YouTube Angle
Suggested video title for this topic:
"The Organ That Grows Back — How the Liver Regenerates"