Calorie restriction has a far better effect on human health for average, healthy people than any other presently available tool, technique, or medical technolog

Calorie restriction has a far better effect on human health for average, healthy people than any other presently available tool, technique, or medical technology. That's a definitive statement that can be made from results of the existing studies, such as those under the CALERIE program. http://calerie.dcri.duke.edu/ http://calerie.dcri.duke.edu/ E.g.: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2829643/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2829643/ There are no human longevity studies for the obvious reasons. The current consensus is that it won't add more than a few years to life. If it did reliably add to longevity to a significant degree, we'd already know about it for one, and secondly there are a range of evolutionary arguments for why CR produces larger effects on life span in shorter-lived species - since it evolved to adapt to famine (~= weather) conditions, which come and go on a fixed timescale depending on their cause, not one that is relative to species longevity. Reconciling tremendous proven health benefits versus little extension of life span is one of those interesting sidebars that will fall out of the scientific process at some point.