Japan's Remarkable Centenarian Population
Japan has long been celebrated for its exceptional life expectancy, and its ever-growing centenarian population is a testament to this reality. The nation's Ministry of Health, Labour and Welfare conducts an annual survey to track the number of individuals aged 100 or older. The findings consistently place Japan at the forefront of global longevity trends. As of September 2025, the number reached a staggering 99,763, an increase of 4,644 from the previous year. This remarkable growth showcases significant improvements in public health and living conditions over several decades.
The trajectory of centenarian growth in Japan is particularly striking. In 1963, when the government began tracking these figures, only 153 people were recorded as being 100 or older. The number steadily climbed, reaching 1,000 in 1981 and 10,000 in 1998. The nearly one-thousandfold increase since 1963 is a powerful indicator of the nation's success in extending lifespans.
Why Do Japanese People Live So Long?
Experts and researchers point to a combination of cultural, dietary, and lifestyle factors behind Japan's exceptional longevity. While there is no single 'secret,' several contributing elements have been identified:
- Healthy Traditional Diet: The typical Japanese diet is rich in fish, vegetables, seaweed, and fermented foods like miso and natto. This low-fat, high-nutrient diet is linked to lower rates of chronic diseases such as heart disease and cancer. Many also practice hara hachi bu, a tradition of eating until only 80% full, which helps with weight management.
- Active Lifestyle: Japanese culture emphasizes staying active well into old age. Regular daily activities, such as walking, gardening, and using public transport, are common. Many older Japanese citizens also participate in Radio Taiso, a broadcast calisthenics routine that has been a cultural staple since 1928.
- Universal Healthcare: Japan's healthcare system provides comprehensive coverage that focuses heavily on preventive care. This emphasis on regular health screenings and early intervention helps manage chronic conditions before they become critical, supporting healthier aging.
- Strong Social Connections: The Japanese value community and family ties, which provide robust social support networks for elders. Group activities and a cultural emphasis on respecting the elderly help combat isolation and contribute to mental well-being, which is crucial for overall health.
Gender Disparity Among Centenarians
A notable characteristic of Japan's centenarian population is the significant gender imbalance. Women consistently outlive men, a pattern observed globally but especially pronounced in Japan. As of the September 2025 figures, women accounted for approximately 88% of the total centenarian population. This disparity is linked to biological differences in genetics and hormones, as well as distinct lifestyle factors such as lower rates of smoking and different dietary patterns.
Demographics of Japan's Centenarian Population
| Feature | Statistics (Sept 2025) | Notes |
|---|---|---|
| Total Number | 99,763 | A new record for the 55th consecutive year. |
| Female Centenarians | 87,784 | Constitutes approximately 88% of the total. |
| Male Centenarians | 11,979 | A smaller but growing portion of the demographic. |
| Oldest Woman | Shigeko Kagawa (114) | As of September 2025. |
| Oldest Man | Kiyotaka Mizuno (111) | As of September 2025. |
| Highest Concentration | Shimane Prefecture | With 168.7 centenarians per 100,000 people. |
Implications of a 'Super-Aged' Society
While the rising number of centenarians is a positive indicator of population health, it also poses significant challenges for Japan's society and economy. The nation is classified as a 'super-aged' society, where over 20% of the population is over 65. This demographic shift creates pressure on several areas:
- Healthcare and Social Services: The demand for elderly care, long-term support, and pensions increases with the aging population. Japan's government must continually adapt and expand these services to meet the needs of its citizens.
- Economic Sustainability: A shrinking workforce combined with a growing dependent population strains the economy and social security systems. Policymakers are exploring strategies to maintain economic vitality and support older adults.
In conclusion, the answer to the question of how many people are over the age of 100 in Japan is a dynamic figure that continues to grow year after year. As of September 2025, that number stood at a record 99,763, with women making up the overwhelming majority. The reasons behind this remarkable trend are a complex interplay of diet, lifestyle, healthcare, and strong community bonds. While this longevity is a cause for celebration, it also highlights the significant societal adjustments Japan must undertake to support its increasingly older population. The ongoing study of Japan's centenarians provides valuable lessons for other nations grappling with the global phenomenon of aging.
World Economic Forum Article on Okinawan Longevity
Conclusion
Japan's centenarian population has reached an unprecedented high, with 99,763 individuals over the age of 100 as of September 2025. This milestone, a result of decades of continuous growth, reflects the country's world-leading life expectancy driven by a confluence of healthy lifestyle, a traditional nutritious diet, universal healthcare, and strong social networks. The demographic trend is not without its challenges, as Japan navigates the socioeconomic implications of a rapidly aging and shrinking population. However, the experiences of Japan's centenarians offer crucial insights into the factors that contribute to a long and healthy life, a model for the rest of the world.
