They note that all living things， including humans， possess biochemical mechanisms that influence how quickly we age and， through dietary （饮食的） intervention or genetic alteration， it is possible to extend lifespan to postpone aging-related processes and diseases.

Further research in laboratory models is expected to provide clues to and deeper understanding of how existing interventions， such as exercise and good nutrition， may lead to lifelong well-being.

The authors also propose greatly increased funding for basic research into the

fundamental cellular （细胞的） and physiological changes that drive aging itself.

We believe that the potential benefits of slowing aging processes have been

underrecognized by most of the scientific community， said Olshansky. We call on the health-research decision-makers to allocate substantial resources to support and develop practical interventions that slow aging in people.

An increase in age-related diseases and escalating health care costs make this the time for a systematic attack on aging itself， the authors write.

Olshansky and colleagues contend that modern medicine is already heavily invested in efforts to extend life， and they argue that a fresh emphasis on aging has the potential to improve health and quality of life far more efficiently than is currently possible.

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