Fewer calories equals a longer life -- At least in monkeys - CNN.com

looks like a flawed study to say the least

the monkeys not on the reduced diet were allowed to eat as much as they wanted so they likely over ate

I didn't look at that particular study, but the general concensus - due to a number of other studies - is that lower calories generally means longer life.

This has probably something to do with a reduction in the amount of reactive oxygen species that result from converting food to energy.