Dennis,
Perhaps you are referring to some of the confounders in the Framingham study (then again maybe not). If so, this is one representative article suggesting that high levels at advanced ages still represent increased risks of events (death or heart attack).
http://eurheartj.oxfordjournals.org/cgi/content/abstract/23/4/286
And yes, some smokers live to be George Burns age. But most don't.
__________________
Peter
'79 930, Odyssey kid carrier, Prius sacrificial lamb
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