Diets · Metabolic & Cardiometabolic
Do statins lower an appetite and blood-sugar hormone?
The claim, precisely: statin therapy decreases GLP-1
Insufficient Diets
RefutedContestedStrong support
consensus score 0.56
Too early to say — it rests on one small 40-person trial and is often exaggerated.
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: Human trials (RCT / n-of-1)
MechanismIn-vitroAnimalObservationalRCTMeta-analysis
How the studies fall
1 support 0 contradict 0 tested null 2 mixed · 3 sources, 1 independent group
What the evidence shows
Atorvastatin lowered GLP-1 and worsened glucose tolerance via a Clostridium-bile-acid axis (reversible by UDCA) in a small trial. Real and interesting, but ONE 40-person study - Norwitz repeatedly inflates this to statins 'smashing GLP-1 into the floor.'
The evidence (3)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Thomasen 2026 2026 · Endocr Connect | observational | mixed | moderate | atorvastatin altered enterohepatic/incretin physiology (independent group) |
| Miskelly 2026 · J Clin Endocrinol Metab | mechanism | mixed | moderate | Rosuvastatin acutely REDUCED postprandial GLP-1 but chronic treatment raised it (direction depends on timing) |
| She J, et al. 2024 · Cell Metab | RCT | supports | moderate | RCT n=40: atorvastatin reduced GLP-1 & worsened glucose via gut bile-acid axis; UDCA rescued it |
Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.