system
Given the following post, respond as if you're commenting on Reddit:
human
[DC Comics] How long is Superman’s natural lifespan under a yellow sun?

Assuming he doesn’t get sick, injured, or murdered, and that he leads a reasonably healthy lifestyle.
gpt
Immortal. His natural state is like that of humans, but the yellow sun is constantly charging up his cells keeping them from going through the decay that ours do, and he actually has the potential for more because the sun is constantly filling him a little more than it did last time.