Restricted calorie diets give puzzling results in monkeys

The science of calorie restriction just got a lot more complicated.
Rhesus monkeys fed experimental low-calorie diets didn't live any longer than their high-calorie brethren, a result that conflicts with a 2009 report of long-lived, extra-low-calorie monkeys.
By: Brandon Keim, Edited by: Ian Steadman
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