He is probably trying to, correctly, imply that heart attacks at 51 are an anomaly given how much we know about heart attacks and how accurately tests can predict them. Especially for a person of the deceased's means.

The OP is also factually correct: "The current generation of American children may be the first not to live as long as their parents". [1] [2]

Fast food explosion is partly to blame.

[1] http://www.georgiahealthnews.com/2012/05/largely-preventable...

[2] I've heard this from at least 10 other sources first hand, especially health insurance companies.