Caloric restriction (CR) refers to a dietary regimen low in calories without undernutrition. This regimen seemed to delay the onset of various chronic disorders thus increasing longevity. Some people might find this program starving and results in low quality of life.
So instead of having huge reduction of caloric intake another option is to increase caloric expenditure by exercise. Though some studies on this showed conflicting results.
But if you are really the lazy-kind and hate exercise and being starved close-to-death there is one thing left for you to do. Take resveratrol(longevity pill?). It goes directly to the triggering mechanism that prevents dna damage due to extraneous factors and thus delay onset of inflammatory and maybe neoplastic conditions : activating the sir2 genes known as longevity genes.
http://genesdev.cshlp.org/content/17/3/313.full
http://www.sciencedaily.com/releases/2008/05/080514064921.htm
http://blog.wired.com/wiredscience/2008/07/caloric-restric.html
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