Over 8,600 South Koreans aged 100+, restrained diet cited as key to longevity

South Korea is witnessing a significant surge in its centenarian population, with over 8,600 individuals aged 100 or older recorded last year, marking a nearly threefold increase from 2015. This demographic shift highlights evolving lifestyles and healthcare, prompting a closer look at the factors contributing to extreme longevity.

“

Restrained eating habits.

Data from the 2025 Population and Housing Census reveals that Gyeonggi Province has the highest number of centenarians, followed by Seoul and Gyeongbuk Province. On a per capita basis, Jeonnam, Jeju, and Gangwon provinces show the highest concentration of individuals aged 100 and above.

For the 4,280 centenarians living in their homes rather than in facilities, a restrained diet emerged as the most frequently cited secret to a long life, mentioned by nearly 60% of respondents. Regular routines and genetic factors were also noted as significant contributors. The survey also indicated that a vast majority of these centenarians have never smoked (86.9%) and have abstained from alcohol throughout their lives (79.6%).

“

Regular routines.

Social engagement appears to play a crucial role as well. On average, centenarians meet with family, friends, or caregivers about 12.7 times per month, with over half reporting more than 10 such interactions monthly. While television and radio remain popular pastimes, a notable portion also engage in outdoor activities like walking or visiting community centers. Despite these active lifestyles, the survey indicates a trend of deteriorating health, with nearly 31.2% describing their health as 'poor,' an increase from a decade ago. Chronic conditions such as hypertension, arthritis, dementia, and diabetes are widespread among this age group. Nevertheless, most express satisfaction with their lives and a strong preference to remain in their familiar home environment rather than move to care facilities.

“

Genetic factors.