The liver is actually the only organ the regenerates like this. Mine shows only normal post-op changes and has full size and 100% function back. Dr. says I can drink, take hepatoxic meds like tylenol, statins, accutane, etc. if needed... so the deal is, I guess... I DON'T have any liver issues whatsoever. However, once upon a time I DID have some major ones and I worry that it could be more likely to happen again. Guess only time will tell. Oh, and the process is entirely natural... remove a large chunk of the liver and it simply regrows itself, no meds or anything else needed to promote growth.