high blood pressure
How much can you choose to not have high blood pressure? How much is genetic? How much depends on our actions but not in a way we understand yet?
Avoiding smoking, obesity, and inactivity helps, but then it is listed separately. Choice of diet can help, for sure - lowering sodium intake will generally lower blood pressure, for the typical western diet; I believe that vegetarianism can help as well. There are also blood pressure medications - I am not sure whether "otherwise as described but with pre-medication high blood pressure that is being successfully treated with medication" puts you in the demographic or not.
In a comment on his skeptical post about Ray Kurzweil, he writes,
I wonder how people on Less Wrong would respond to that poll?
Edit: (Tried to) fix formatting and typo in title.