The Japanese Ministry of Health, Labour and Welfare published relevant statistics in 2007: 189 workers died, many from strokes or heart attacks, and about 208 more fell severely ill from overwork in the year to March, the highest figure on record and up 17. 6 % from the previous year.

The Japanese Ministry of Health, Labour and Welfare defines hikikomori as people who refuse to leave their house and, thus, isolate themselves from society in their homes for a period exceeding six months.

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