At around age 60, "muscles really start to break down," say Kathryn Starr, an aging researcher, "and because of that, the protein needs of an older adult actually increase."

在60岁左右，“肌肉真的开始分解，”一位研究衰老的研究员凯瑟琳·斯塔尔说，“也正因为如此，老年人对蛋白质的需求实际上增加了。”

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If there is an increase, and especially an increase in a number of cities at the same time, then this is not simply due to aging pipes.

如果破裂数量在增加，尤其是在同一时段出现此情况的城市数量增加，那么这就不是管道老化这么简单的了。

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The number of global cancer deaths is projected to increase 45% from 2007 to 2030 (from 7.9 million to 11.5 million deaths), influenced in part by an increasing and aging global population.

预计2007年到2030年期间，全球癌症死亡人数将增加45%(由790万人增至1150万人)，这部分受到全球人口日益增加和老龄化的影响。

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The American dream is in peril from the confluence of sky rocketing deficits, high unemployment, and the ticking time bomb of an aging baby boomer generation, with its coincident increase in the burden of entitlements as a percentage of GDP.

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These ranged from a world run by robots, where advances in artificial intelligence gradually increase our dependence on technology, to an aging population, where changing demographics alter the needs of the workforce.

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Other data sources have blamed the lingering employment woes on a gap in the skills needed and those available, geographical constraints tied to the still-difficult housing market and the increase in the number of people dropping out of the workforce, a trend that is tied to an aging population.

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