Probably the only absolutely true thing you'll hear is that you may not make it to 60/70/80.
On the other hand, if we're talking about living to retirement age, 3 out of 4 do.
Whether the 1 in 4 is done in by old age, a drunk driver or a medical condition is still under investigation.
Whatever the cause, there are ways to minimise the risk, I guess. If you're 34 you've got a lot of time to put stuff right. If I'm honest, at 50, I've probably spent nearly 5 years denying the inevitable, and it'll probably cost me dear :/
PS: Second week in, first week without chesse since, probably 1969, and possibly on a no-cheese high (the marmite has taken a beating, though).