The Miuras are among the fast-growing ranks of super-seniors -- Japan's extraordinarily fit old folks. In a country where the average life span has extended to 81.9 years, Japan's elderly are not only the longest-lived but statistically the healthiest seniors in the world. The typical Japanese now enjoys at least 75 years of relative good health, according to the World Health Organization. That exceeds by nearly six years the average for Americans -- who rank 23rd -- and by three years the average for the French, whose seniors are warming the benches in seventh place.
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Studies indicate a multitude of reasons for the health of older people, with most citing a traditional diet heavy on fish and light on red meat, as well as the consumption of high-fiber rice. A national survey in 2000 showed that almost 63.6 percent of seniors don't overeat, 49.6 percent exercise regularly and 64.2 percent sleep well.
Older Japanese additionally have lived through the hardships of World War II and its aftermath -- and, in some cases, through the difficulties of World War I and the 1904-05 Japanese-Russian war. Those periods, geriatrics experts say, toughened older Japanese -- and they stayed tough even as Japan evolved into the world's second-richest nation after the United States.
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.....In 2002, the United States, with a population of 283 million, had roughly 50,000 centenarians, but only about 13 percent of them were living independently. In contrast, in Japan, a nation of 128 million, there are 23,000 centenarians, with about 35 percent of them living independently, according to government statistics and research studies in both Japan and the United States....
The Health Ministry is working with the Miuras to develop a nationwide health program in which the elderly would receive subsidized gym memberships as well as training at senior centers......
http://www.washingtonpost.com/wp-dyn/articles/A555-2004Oct26_2.html