It's also the case that we already know what kinds of things kill people, and people aren't really sticking to the lifestyles that correspond to longer life. S

It's also the case that we already know what kinds of things kill people, and people aren't really sticking to the lifestyles that correspond to longer life. Someone the Queen's age was actually unlikely to make it to 100, so you'd have to improve survival quite a bit. From looking at a UK table I found, there's ~2000 people left of 100K at 99 years, 1300 left the year after. Table doesn't go to 103.