Life & Education Is Japan’s Tap Water Safe to Drink? 52 Standards in Data
Japan's tap water must meet 52 legal quality standards, and 98.3% of residents were on a public supply in FY2024. Five prefectures reach 100.0%, Kumamoto 89.8%.
Life & Education
Life & Education 
Life & Education Why Is Japan So Thin? 25.3% Are Obese by Japan’s Own Rule(2026 Data)
Japan draws its obesity line at BMI 25, not 30. On that measure 25.3% of adults were obese in 2024: 32.4% of men and 19.3% of women. Charted from official data.
Life & Education How Long Do Japanese Live? 87.33 Years for Women (2026 Data)
Japan's 2025 life tables put life expectancy at 87.33 years for women and 81.35 years for men, against 44.3 and 42.8 years in the first table of 1891-1898.