# Plan and operations of the 10th Korea National Health and Nutrition Examination Survey (2025–2027)

## TL;DR

The 10th Korea National Health and Nutrition Examination Survey (2025–2027) introduces new features to better assess health and aging in the Korean population.

## Contribution

The survey introduces web-based questionnaires, enhanced older-adult health assessments, and a longitudinal follow-up system.

## Key findings

- The survey improves participant convenience through web-based self-administered questionnaires.
- Enhanced assessments for older adults include osteoporosis and life functioning.
- A longitudinal follow-up system is established to monitor long-term health trends.

## Abstract

The Korea National Health and Nutrition Examination Survey (KNHANES) is a national health survey mandated by Article 16 of the National Health Promotion Act to assess the health and nutritional status of the Korean population. Over the past 2 decades, the survey has continuously introduced timely survey components while strengthening its survey methodology and operational systems to enhance both the policy relevance and scientific utility of its findings. The 10th KNHANES (2025–2027) preserves the statistical representativeness of its sampling design while expanding the use of web-based self-administered questionnaires to improve participant convenience. In response to Korea’s transition into a super-aged society, the 10th KNHANES incorporates enhanced older-adult health surveys, including osteoporosis assessment and older adults’ life functioning, and newly introduces items addressing social support as part of the social determinants of health. In addition, a longitudinal follow-up survey system has been established to monitor long-term changes in population health. Collectively, these changes are expected to improve understanding of aging-related health issues, support evidence-based national health policy development, and expand the applicability of KNHANES data for academic research.