Does cinnamon help with inflammation? What the research does and doesn't show

The evidence doesn't support cinnamon lowering C-reactive protein, the blood marker most commonly used to measure inflammation. A 2024 umbrella review pooling earlier meta-analyses found no significant CRP change, a small reduction in one other inflammation-related marker, and no effect on two more — in adults with existing cardiometabolic risk factors, at gram-scale cinnamon doses.

What the evidence doesn't support

It doesn't support cinnamon as a reliable anti-inflammatory supplement. The clearest, most commonly cited inflammation marker in this research is C-reactive protein (CRP), and the largest recent review of the trial literature found no significant pooled effect on it. Two markers of oxidative stress and cell adhesion (malondialdehyde and ICAM-1) also showed no significant change. Only one marker, interleukin-6 (IL-6), showed a small statistically significant reduction. A body of evidence that's null on the marker researchers rely on most, mixed on the others, and positive on only one, doesn't support treating cinnamon as an established anti-inflammatory — and cinnamon is not a treatment for any diagnosed inflammatory condition.

What the trials found

A 2024 umbrella review searched four databases through March 2024 and pooled earlier meta-analyses of randomized controlled trials on cinnamon supplementation and biomarkers of inflammation and oxidative stress in adults. It found a small reduction in interleukin-6 (weighted mean difference -1.48, 95% CI -2.96 to -0.01) and an increase in total antioxidant capacity, but no significant effect on C-reactive protein (WMD -1.33, 95% CI -2.66 to 0.00 — a confidence interval that touches zero), malondialdehyde, a marker of oxidative damage, or ICAM-1, a marker of cell adhesion linked to vascular inflammation. The underlying trials were run mostly in adults with cardiometabolic risk factors such as type 2 diabetes, PCOS or metabolic syndrome, at cinnamon doses that the broader research literature generally reports in the 1 to 6 gram a day range of ground bark (see cinnamon dosage) — not a healthy population, and not doses most single-ingredient capsules deliver.

Earlier, smaller meta-analyses focused on CRP specifically had reported a significant reduction; the 2024 umbrella review, pooling a larger and more recent set of trials, did not confirm that. Reporting the earlier positive CRP finding without the more recent null would misrepresent where the evidence currently sits.

Questions people ask

Does cinnamon reduce inflammation?

The most-used inflammation marker, CRP, showed no significant change in the largest recent review. One other marker (IL-6) showed a small reduction; two others (MDA, ICAM-1) showed none. It's a mixed, mostly null result, not an established anti-inflammatory effect.

Is cinnamon anti-inflammatory?

Cinnamon compounds have anti-inflammatory activity in laboratory and animal research, but the clinical trial evidence in people — measured by CRP specifically — doesn't currently support a reliable inflammation-lowering effect at the doses tested.

How much cinnamon should I take for inflammation?

There's no dose specifically established for inflammation. The broader research literature generally uses 1 to 6 grams of ground bark a day, and the review above didn't find a consistent enough effect to attach a recommended amount to — see cinnamon dosage.

When to talk to a doctor

A diagnosed inflammatory condition needs a doctor's evaluation, not a supplement search. Cinnamon is not a treatment for one, and nothing in the research above supports using it as a substitute for medical care or monitoring. If you're considering a gram-scale cassia cinnamon dose anywhere near what these trials used, mention it to a doctor — cassia's coumarin content sets its own separate safety ceiling, unrelated to any inflammation finding (see cinnamon dosage and who should not take cinnamon).

Related reading: does cinnamon help with blood pressure?, cinnamon benefits: what the research does and doesn't show, and cinnamon dosage.