some kind of aura

Just having a small library in the house must emit some kind of aura that makes over 50's 23% more likely not to die in the next 12 years.
Who would've thought?
Beyond belief, really.
Yet another example of people with far too much time on their hands:

http://www.csmonitor.com/Books/chapter-and-verse/2016/0811/Do-book-lovers-live-longer

(originally published 08-09-16)