system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek] What is the average life expectancy of an Federation citizen on Earth?

What is the average life expectancy of a Federation citizen living on Earth in a city like San Francisco or Washington, D.C given the healthcare citizens had access to.
gpt
In the pilot episode of *ST: Next Generation*,  we are told that a wrinkled and white-haired Admiral McCoy who looks to be in his early 80s by our standards is actually 137 years old.  Keep in mind that this is a man who has dealt with potentially lethal situations and life-threatening conditions many times throughout his life, which means that he is likely to have aged at a faster rate than those who have spent their lives safely on Earth.

So it is likely that the average Federation citizen can expect to live up to 150 years old if fortune keeps him or her safe.