Old news, but something I have something to say about (eventually on the blog). Research has been undertaken into the effects of calorie restricted diets on humans and whether this has a positive effect on longevity.
To me much of it sounds like a healthier life in addition to a longer life; many of the diseases effected by calorie restriction cause various issues from changes of lifestyle to medication to surgery and suffering (for the individual and family members).
Eat less, live more from the Economist.
