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Showing results for tags 'CALERIE study'.
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All: This is evidently the main report from the CALERIE study, an NIA trial that was billed as a CR feasibility study in humans. Most earlier "CALERIE" reports came from pilot studies, which unfortunately used entirely overweight and obese people, making it impossible to disentangle beneficial effects or effects suggesting CR's translatability from simple obesity-avoidance effects. CALERIE proper was somewhat more selective — "Body mass index averaged 25.1 (range: 21.9–28.0kg/m2)" — but this unfortunately still leaves a lot of suspect data points. Additionally, the degree of CR intended was mild, and that achieved and sustained was even milder. Anyway, here is the abstract of the CALERIE report: I should be able to get access to the full text soonish, and will provide more details if someone else doesn't beat me to it.
All, In case you missed it, Al posted a pointer to a new review paper  by Luigi that reviews lots of interesting human CR results, including Okinawans, Biosphere II, Minnesota Starvation Study, CALERIE-I and II, and our own CR Society Cohort study. I read through it and didn't see anything particularly new. Pretty much a thorough review of everything we already know about human CR, much of it from his own work. Most of the positive evidence for CR benefits in humans comes from us. Reading between the lines, and looking at the lack of many expected changes, the CALERIE studies were somewhat of a disappointment. For anyone who is steeped in CR science, it probably isn't worth reading, except perhaps as a refresher. But for newcomers to CR, it looks to be a very good introduction. --Dean --------  Ageing Res Rev. 2016 Aug 17. pii: S1568-1637(16)30183-0. doi: 10.1016/j.arr.2016.08.005. [Epub ahead of print] Review. Calorie restriction in humans: An update. Most J, Tosti V, Redman LM, Fontana L. Full text: http://sci-hub.cc/10...arr.2016.08.005 Abstract Calorie restriction (CR), a nutritional intervention of reduced energy intake but with adequate nutrition, has been shown to extend healthspan and lifespan in rodent and primate models. Accumulating data from observational and randomized clinical trials indicate that CR in humans results in some of the same metabolic and molecular adaptations that have been shown to improve health and retard the accumulation of molecular damage in animal models of longevity. In particular, moderate CR in humans ameliorates multiple metabolic and hormonal factors that are implicated in the pathogenesis of type 2 diabetes, cardiovascular diseases, and cancer, the leading causes of morbidity, disability and mortality. In this paper, we will discuss the effects of CR in non-obese humans on these physiological parameters. Special emphasis is committed to recent clinical intervention trials that have investigated the feasibility and effects of CR in young and middle-aged men and women on parameters of energy metabolism and metabolic risk factors of age-associated disease in great detail. Additionally, data from individuals who are either naturally exposed to CR or those who are self-practicing this dietary intervention allows us to speculate on longer-term effects of more severe CR in humans. PMID: 27544442