Reference entry
Lipopolysaccharide (LPS)
Plain-English definitions of microbiome research vocabulary — the terms you'll see across articles, testing services, and probiotic claims.
Glossary context
Defined
in the site-wide microbiome glossary
Definition
A component of the outer membrane of gram-negative bacteria. When LPS enters the bloodstream through a compromised intestinal barrier, it triggers inflammation — a key mechanism linking gut health to systemic disease.