· Reviewed by Dr. Lauren Foster, MD, FACE
Cinnamon contains cinnamaldehyde and MHCP that enhance insulin signaling and slow gastric emptying. Multiple human trials show modest fasting glucose reductions (10-20 mg/dL) and HbA1c reductions (0.2-0.4%) at daily doses of 1-6 grams of powder or equivalent extract.
Quick answer: Cinnamon contains cinnamaldehyde and methylhydroxychalcone polymer (MHCP), bioactive compounds that enhance insulin signaling and slow gastric emptying. Multiple human trials show modest fasting glucose reductions of 10-20 mg/dL and HbA1c reductions of 0.2-0.4% at daily doses of 1-6 grams of powder or equivalent extract.
Cinnamomum cassia (Chinese cinnamon) is high in coumarin (0.4-0.8%) which can stress liver function at high daily doses. Cinnamomum verum (Ceylon, "true" cinnamon) is essentially coumarin-free. For long-term high-dose use, Ceylon is safer; for shorter-term standardized extract use, both are reasonable.
Insulin signaling enhancement. MHCP mimics insulin's effects at the cellular level. Gastric emptying delay. Cinnamaldehyde slows stomach emptying, producing a smaller post-meal glucose spike. Reduced carbohydrate breakdown. Inhibits alpha-amylase and alpha-glucosidase, the enzymes that break dietary starches into glucose.
A 2013 meta-analysis published in Annals of Family Medicine reviewed 10 randomized controlled trials and found cinnamon supplementation produced statistically significant fasting glucose reductions (mean −24.6 mg/dL) and HbA1c reductions. Effect sizes are modest — meaningful adjunct support but not equivalent to diabetes medications.
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Visit Gluco6 Official Website →Cinnamon contains cinnamaldehyde and methylhydroxychalcone polymer (MHCP), bioactive compounds with three mechanisms relevant to blood sugar: insulin signaling enhancement (MHCP mimics insulin's effects), gastric emptying delay (cinnamaldehyde slows stomach emptying, reducing post-meal glucose spikes), and reduced carbohydrate breakdown (inhibits alpha-amylase and alpha-glucosidase enzymes). Cassia cinnamon is high in coumarin (0.4-0.8%) which can stress liver function at high doses; Ceylon cinnamon is essentially coumarin-free and safer for long-term high-dose use. 2013 Annals of Family Medicine meta-analysis of 10 RCTs found significant fasting glucose reductions (-24.6 mg/dL mean) and HbA1c reductions. Effect sizes modest — meaningful adjunct, not equivalent to diabetes medications.