Does Calorie Restriction In Primates Reduce Mortality? The Debate Continues

A 2012 National Institute on Aging report on monkeys and diet found no differences in survival or better overall health among animals that were calorie restricted. But University of Wisconsin researchers conducting a 25-year study on the impact of calorie restrictions on monkeys report just the opposite: a significant lengthening of lifespan and reduction in age-related diseases. The discrepancy may be due to differences in the way the animals were fed in the two studies. The Wisconsin study started with two groups of adults, one of which ate 30 percent fewer calories.  The NIA control monkeys, however, were fed according to a standardized food intake chart and may also have been calorie restricted.