Yes, it’s interesting how rarely anyone lives past 120, I think the oldest verified was somewhat over 122. That seems about the limit the human body was designed to last. I know people who have lived into their 90s, but they all seemed to start failing fairly quickly at that point. My 84 year old Dad is hale and hardy and plans to live to 100. A very good reason to not want Obamacare.
Interesting maybe, but not surprising. Every time a chromosome is replicated, a little bit of the end of the chromosome is lost. Fortunately, chromosomes come with things at the end called telomeres, which are DNA sequences which (basically) are unused "junk" and serve primarily to protect the "important" DNA.
A telomere is often compred to an aglet (the plastic part of your shoelace which keeps the lace from unravelling), FWIW.
Eventually, you run out of telomere, and chromosomes begin to lose encoding DNA during replication. The body stops making the right stuff, and in some cases makes the wrong stuff, and eventually the wheels on the bus stop going round and round.
At the same time, the longer you live, the slower you move, and the more chances you have to get hit by a bus.
Finally, we have cancer. The body has defenses against cancer (interestingly, the "reason" for telomeres is so that one of the body's defenses against cancer doesn't kill us). IIRC, there are three main ones. Each can be defeated by genetic mutation. Once all three are gone, you're hosed. The longer you live, even if you avoid all of the things that cause high probabilities of said mutations, the higher the odds of eventually hitting the trifecta.