A New York Times article, The Calorie-Restriction Experiment, details a study where researchers attempted to find out if eating less increased longevity. 132 men and women reduced their daily calories by 25 percent for two years to see if a Spartan diet affects the aging process and its associated diseases.
Subjects experienced “astounding drops in cardiovascular risk factors”.
BUT, another quote:
“Ninety-nine percent can’t do it,” John Holloszy, a medical doctor who is the lead investigator at Washington University, told me. “The people in the study are not going to stick with it” after they leave.
Damn. Two years to figure that out?