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Researchers link lack of sleep with obesity in children

http://search.japantimes.co.jp/cgi-bin/nn20080122a3.html

Kyodo News

A study tracking children over several years indicates that lack of sleep at a young age can lead to obesity as they get older.

According to the study, more children who had less than nine hours of sleep when they were 3 years old, compared with those who had more than 10 hours, became obese when they reached junior high and high school.

Among the academics involved in the study were Michikazu Sekine, an associate professor of public health at the University of Toyama, and Sadanobu Kagamimori, a professor of public health.

The study was launched in fiscal 1989 and targeted about 10,000 babies born that year. They discovered that relatively shorter sleep periods contributed to many of the children becoming obese.

Lack of exercise and an enriched diet are believed to be contributing factors to obesity in children. In the 1970s, the percentage of obese children was about 3 percent, but the figure has increased to more than 10 percent during and since the 1990s.

The babies in the study were all born in Toyama Prefecture and represented 1 percent of Japan's total that year. The children were assessed every three years until they became high school students.

The study is regarded as unusual because of its long duration and has gained attention as the "Toyama study."

The Japan Times: Tuesday, Jan. 22, 2008

ニュースの続きは、

http://search.japantimes.co.jp/cgi-bin/nn20080122a3.html