Lighter Meals May Bring Longer Life
The NIA currently supports a study looking into calorie restriction in humans although, Sierra pointed out, such a study is difficult to conduct.
"Studies in humans can be done but they're not going to address longevity and it's a self-selected group," he said. "Monkeys are the closest we can get."
The findings come a day after U.S. researchers reported in Nature that rapamycin, a drug typically given to transplant patients, significantly extended the lifespans of mice.
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