SCIENCE · DATA · BOUNDARIES

Yim DongKoo · Ryu JeongKun:research and external materials

Read author-participated research, conference materials and external evidence as different layers. The summaries below describe research questions and limits; they are not diagnostic or treatment claims.

REPRESENTATIVE PAPERS

Two author-participated peer-reviewed studies

Ryu JeongKun’s questionnaire-development study and Dr. DongKoo Yim’s BMI·food-preference study are shown with equal importance.

Ryu JeongKun · 2022

Machine Learning Applications for the Development of a Questionnaire to Identify Sasang Constitution Typology

Kim, Ryu and Park explored item selection, hierarchical clustering and multiple correspondence analysis, identifying 47 core items and six clusters. This is a foundation for improving questionnaire reliability, not an automated diagnosis.

PubMed
Yim DongKoo · 2018

Analysis of BMI and Food Preferences by Sasang Constitution Classified by SCAT2 and Experts

Cheon, Yim and Kim compared SCAT2 with expert classification and examined group-level BMI and food-preference patterns. Classification agreement and food preference are not a personal prescription.

DOI
AUTHOR · CONTENT · PRESENTATION

Conference and co-research records

These records are presented as research and presentation assets authored or delivered by Yim DongKoo and Ryu JeongKun.

Year / venueRecord and participationWhat it contributesBoundary
2025 · JejuLiterature analysis of prevalence of major diseases by Sasang Constitution
Yim DongKoo · Ryu JeongKun · Lee Jongheon
Review of 69 papers (1990–2023). It compares constitution-linked patterns across metabolic, allergic, pulmonary, digestive and neurologic outcomes.Heterogeneous literature; not an individual risk calculator or dietary prescription.
2024 · Vascular Management AssociationAssociation between Sasang Constitution and metabolic-syndrome risk
Yim DongKoo · Ryu JeongKun · 2024 academic meeting
Literature review (2000–2023) describing a higher metabolic burden signal in Taeeumin and lower burden in Soeumin across cited studies.Confounding, classification agreement and study design vary.
2025 · Vascular Management AssociationSeparate presentation file not yet locatedThe local source index contains the 2024 Vascular Association record and the 2025 Jeju record, but no distinct 2025 Vascular Association deck or abstract.We will add it in the same format when the exact file or event record is identified.
2026 · ISPBSasang Constitution as a Stratification Variable for Inter-Individual Variance in Nitric Oxide Response
Yim DongKoo, Ph.D. · Ryu JeongKun · 16th International Symposium on Plasma Bioscience, Seoul
Narrative review and hypothesis generation connecting constitution-stratified variance with fermented NO platforms and plasma-generated NO water; proposes a staged collaboration roadmap.No diagnostic or therapeutic efficacy claim. IRB, dose, blood pressure, vascular-function and adverse-event checks come first.
EXTERNAL PAPERS

External evidence, kept separate

Genomics, microbiome, nitric oxide physiology and AI/wearables provide methods and questions—not proof that Sasang-specific effects are established.

Genomics

Explore gene–environment association without assigning constitution or destiny to one SNP. Report cohort size, confounders, effect size and uncertainty.

Microbiome · gut–brain axis

Track diet, sleep, stress and repeated samples over time. Do not convert a small comparison study into a personal treatment claim.

Nitric oxide · vascular response

NO is an important physiological molecule, but constitution-specific effects require preregistered studies, IRB review and safety endpoints.

AI · wearables

Use probability, explanation and uncertainty to support expert judgment and personal choice—not to replace them.