Metabolic & Cardiometabolic · Gut & Microbiome
FFAR2 activation increases L-cell GLP-1 secretion
📅 Last reviewed: 2026-08-11 ⓘ
Evidence ladder
How far up the ladder this claim has climbed. A high consensus on a low rung means "consistent so far," not "proven in people."
Top evidence so far: A plausible theory (Mechanism)
How the studies fall
What the evidence shows
The receptor step H1 depends on. FFAR2 on enteroendocrine L-cells does mediate GLP-1 and PYY release in response to SCFA — the receptor works. That is a different claim from H1's, and the difference is where H1 actually lives. H1 asserts that AhR-driven FFAR2 upregulation makes L-cells more sensitive to a given SCFA load.
The evidence (1)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| ? 2026 · study_type: mechanism | mechanism | supports | low | Review of gut-derived incretin modulation describing FFAR2/GPR43 on L-cells as a route by which microbial SCFA drive GLP-1 secretion. |
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