The Study
Insulin Resistance is Associated With Skin Microvascular Dysfunction and Reduced Circulating Endothelial Progenitor Cells in Hypertensive Patients
This study looked at a group of people with high blood pressure and found that those with more insulin resistance also tended to have weaker tiny blood vessels and fewer repair cells. But it didn’t change anything or wait to see what happens later — it just took a snapshot. So we can’t say insulin resistance breaks the blood vessels — only that they often go together.
Analysis score
Maximum 44 for a cross-sectional study.
Where the score came from
Even if you don’t have diabetes, having too much fat and sugar in your blood might weaken your body’s ability to repair tiny blood vessels.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 544 / 100
Quality score
Snapshots of a population at a single point in time, or descriptions of small groups. Can identify correlations and prevalence, but cannot determine cause and effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — this suggests metabolic stress can damage small blood vessels early, even before full-blown diabetes or heart disease develops, potentially increasing future risk.
- 2For every 1 standard deviation increase in the TyG index (a measure of insulin resistance), people had 11% fewer repair cells (cEPCs) and 6.3% less blood flow response in their skin after a blood pressure cuff was released.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
The Journal of Clinical Hypertension
Year
2026
Authors
Ya-Wan Lu, Chun-Chin Chang, Ruey-Hsin Chou, Chin-Sung Kuo, Shih-Hung Tsai, Po-Hsun Huang
Related Content
Claims (6)
In people with high blood pressure and normal fasting blood sugar, a higher triglyceride-glucose index is linked to lower levels of endothelial progenitor cells and worse microvascular function, whether or not they have diabetes or coronary artery disease.
Among people with high blood pressure and normal fasting blood sugar, higher levels of the triglyceride-glucose index are linked to lower levels of endothelial progenitor cells, which are involved in blood vessel repair.
Among hypertensive individuals with normal fasting blood sugar, higher levels of the triglyceride-glucose index are linked to reduced blood flow response in skin capillaries after temporary blood flow blockage, regardless of standard heart disease risk factors.
In people with high blood pressure and normal fasting blood sugar, the triglyceride-glucose index does not relate to how well HDL cholesterol removes fat from cells, suggesting HDL function is not impaired at this early stage of metabolic change.
Persistently high blood sugar, high triglycerides, excess fat around the organs, and ongoing inflammation cause direct harm to the inner lining of arteries and lead to the development and rupture of fatty plaques.
In people with high blood pressure and normal fasting blood sugar, higher levels of the triglyceride-glucose index are linked to poorer microvascular function, and this link is weaker when accounting for lower levels of endothelial progenitor cells, suggesting that reduced vascular repair contributes to this relationship.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.