More than 28,000 Japanese are 100 years or older, up from a mere 1,000 at the start of the 1980s as solid health habits increase the graying of the population.

良好的健康习惯是日本长寿老人增多的一大原因，目前，日本百岁及百岁以上的老人达到28000人之多，远远超过上世纪80年代初的1000人。

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The graying of the prison population is not unique to Japan, although it is happening faster here than in other countries, according to the Justice Ministry.

司法部称，虽然（日本）监狱囚犯老龄化的趋势比其他国家更快，但这个问题并不是日本特有的。

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Elsewhere in Asia, the graying of the population is less pronounced, though the beginnings of a phenomenon similar to what is happening in Japan are already visible in Hong Kong and, less obviously, Singapore.

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The graying of the U.S. population and the Affordable Care Act, known as Obamacare, will increase the demand for medical services.

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America risks following Europe and Japan into the trap of a falling population combined with the spiraling entitlement costs of a graying society.

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