A very interesting chart shows the impact of various lifestyle choices on the life expectancy of 75 year olds.
Pensioners halve their odds of living another decade if they smoke, drink, eat little fruit and avoid exercise, a major study has found.
Researchers have created a groundbreaking 'health calculator' which 75-year-olds can use to show their chances of living to 85 - and some of it makes for grim reading.
It shows that 75-year-old men with the worst lifestyle habits have just a 35 per cent chance of living another decade, while those odds soar to 67 per cent for healthy people.
The four categores are alcohol consumption (low, moderate and high), exercise, smoking, and eating fruit.
The approximate marginal impact of each of the four activities is interesting.
Being in the low alcohol consumption rather than the high group increases a 75 year old man's odds of living to 85 by about 3%.
The physically active improve their odds by 6%.
Being in the non-smolking category improves a man's odds of living another decade by 17% (I suspect that "smoking" is over one's lifetime, so it is not enough to quit smoking at 75, although that would probably be a good idea. I'll even bet that a similar caveat applies to the other categories, although it is never too late to take steps to improve one's health. Well, unless you are already dead or comatose.).
Finally, eating fruit leads to a 6% improvement.
I am shocked at the non-consequentiality of alcohol. Maybe there is a survivor bias effect at work - perhaps a lot of truly heavy alcohol abusers managed to kill themselves before reaching an age suitable for the study.