Japan’s population of people aged 100 or older just crossed the 99,000 mark, a figure that would have seemed like science fiction just a few decades ago. As of September 1, 2025, the Ministry of Health, Labor and Welfare tallied 99,763 centenarians, an increase of 4,644 from the year before. This milestone comes as the nation marks its 55th straight year of breaking its own record for longevity, with women comprising the overwhelming majority—88 percent, or 87,784 individuals—compared to 11,979 men.
At the top of this remarkable group sits 114-year-old Shigeko Kagawa, a retired obstetrician and gynecologist from Nara Prefecture who didn’t hang up her stethoscope until age 86. Kagawa made headlines in 2021 by carrying the Olympic torch at 109, a testament to the vitality that defines so many in her cohort. The oldest man, 111-year-old Kiyotaka Mizuno, rounds out a picture of endurance that the rest of the world can only envy.
What fuels this extraordinary lifespan? Officials point to a combination of disciplined eating habits and an unyielding commitment to staying in motion, even as the years pile on. Japan’s rates of heart disease and cancers like breast and prostate remain among the lowest globally, thanks in large part to meals built around fish, vegetables, and soy, while steering clear of excessive red meat and salt.
Delusions of Adequacy 