Board Thread:Questions and Answers/@comment-34129530-20140824132655/@comment-995426-20160409152102

And if you go by Tales of the TMNT, their lifespans are actually centuries-long, with Swan Song telling some of the rest of 's later life story until his final years. Archie TMNT seems to agree in speculating that the turtles will actually live centuries. IDW TMNT hasn't gauged the lifespans of their actual mutant bodies, but its newly introduced version of Leatherhead is already over 200 years old.