50% of people aged between 40 and 49 receive less than 6 hours of sleep
Last year in November, the Ministry of Health, Labor and Welfare asked 6500 people over the age of 20 how many hours of sleep they receive each night.
According to the survey, 36% of men and 42% women sleep for less than six hours overall, meaning that around 50% of people aged between 40 and 49 are receiving less sleep.
The survey also reported that 7% of men and 9% of women slept for less than 5 hours, showing that men in Japan tend to have longer sleep than women.
The Ministry has stated that it is a worrying issue because due to the lack of sleep, the level of heart problems, weight gain and blood pressure has been increasing.
The Ministry has advised people to not work as much and to spend more time at home with the hope that this will help lower the rising issue.
Source: NHK (Japan Broadcasting Corporation), 睡眠時間 40代の半数が６時間未満, retrieved from https://www3.nhk.or.jp/news/html/20180912/k10011625431000.html