Dietary restriction with and without caloric restriction for healthy aging.

F1000Res · 2016 · PMC4755412 · PMID 26918181

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a positive trendno p-value reported

The NIA reported no improvement in lifespan but observed a positive trend for the delay of age-related diseases (i.e. healthspan) 23 , whereas WNPRC reported significant improvement in both lifespan and healthspan 4 , 24 .

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