Seoul researchers identify specific gut microbiome signature linked to dyslipidemia and cardiovascular risk

Seoul researchers find a specific gut microbiome signature in people with dyslipidemia, suggesting the gut plays a key role in cholesterol and lipid regulation.

By: AXL Media

Published: Mar 4, 2026, 9:23 AM EST

Source: The information in this article was sourced from American Society for Microbiology

The silent precursor to cardiovascular disease

Cardiovascular disease remains the leading cause of death globally, often preceded by a silent condition known as dyslipidemia. This imbalance of lipids in the blood—characterized by high triglycerides and total cholesterol or low levels of "good" high-density cholesterol—frequently manifests before clinical symptoms of heart disease appear. Researchers at the Samsung Advanced Institute for Health Sciences and Technology in Seoul have conducted a large-scale study to determine how the gut microbiome influences these early biological shifts. By studying microbial alterations at this stage, the team aims to identify the biological mechanisms that govern lipid regulation before the onset of symptomatic heart disease.

Metagenomic analysis of microbial communities

The research team, led by Dr. Han-Na Kim, compared fecal and blood samples from 1,384 participants, 895 of whom were diagnosed with dyslipidemia. Utilizing shotgun metagenomic sequencing, the scientists were able to identify specific bacterial taxa and infer the metabolic pathways encoded in the microbial genes. Unlike traditional sequencing, this approach allows for a comprehensive look at the entire microbial community structure. While the study also examined the "resistome"—the collection of genes associated with antimicrobial resistance—researchers found no statistically significant differences in resistance patterns between healthy individuals and those with dyslipidemia.

Microbial markers of lipid imbalance

The results revealed a significant enrichment of the bacterium Bacteroides caccae in participants with dyslipidemia. Previous medical literature has associated this specific taxon with various inflammatory and metabolic processes, suggesting its presence may reflect an altered lipid state. Conversely, participants with healthy lipid levels showed a higher prevalence of Coprococcus eutactus and Coprococcus catus. these bacteria are known to produce short-chain fatty acids (SCFAs), which provide anti-inflammatory effects and support general metabolic stability. The study suggests that the absence of these beneficial, SCFA-producing microbes may contribute to the body's inability to properly regulate lipids.