gwern comments on If calorie restriction works in humans, should we have observed it already? - Less Wrong

21 Post author: Mark_Eichenlaub 24 April 2012 04:28AM

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Comment author: gwern 24 April 2012 11:28:32PM 5 points [-]

but the expected remaining lifespan for someone who has made it to (say) 40 hasn't increased by much more than a decade since palaeolithic times

I'm pretty sure that's too low - I remember consulting some table which put high medieval French adult life expectancy in the 50s, which would be 2 decades or so different rather than 1 decade.

Comment author: [deleted] 25 April 2012 12:21:17AM 7 points [-]

Er... Yes. I've found this. So a 40-year-old in ancient Rome would have lived 23 more years in average, whereas the corresponding figure for the US in 2003 was 39.5 years.

Comment author: gwern 25 April 2012 12:32:27AM 2 points [-]

Don't feel bad - you were at least informed enough not to give a ridiculous answer like '40 years'.