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3/5 Moderate evidence

Metabolic health evidence brief

Cinnamon

Cinnamon may modestly improve glucose or lipid markers in type 2 diabetes research, but it is not a substitute for medical treatment or diet quality.

Modest metabolic-marker support health 6 linked sources Content audit 2026-05-05

Headline Finding

Updated T2D meta-analysis reported lower fasting glucose and HbA1c, but heterogeneity was high and product form matters.

Dose Context

Trials vary by species, extract, powder, dose, and duration; cassia cinnamon can contribute coumarin exposure at high intakes.

Important Caveat

This is not diabetes treatment. People using glucose-lowering or blood-thinning medication should check with a clinician.

Source Drawer

Linked Research

6 papers and evidence links - audit 2026-05-05
  1. Meta-analysis Updated glycemic meta-analysis
  2. Meta-analysis Dose-response RCT meta-analysis
  3. Review NCCIH cinnamon overview
  4. Meta-analysis Blood pressure meta-analysis
  5. Review Cardiovascular risk GRADE review
  6. Meta-analysis Lipid profile meta-analysis

How To Read This Rating

The score reflects evidence that the supplement does its stated job. Some jobs are direct, such as strength, endurance, or recovery; others are indirect, such as sleep, mood, appetite, or health support. A real effect can still receive a cautious practical rating when dose, safety, product quality, or audience fit remain uncertain.

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