Cinnamon: Diabetes Evidence, Species Differences & Safety

Cinnamon sounds simple until you ask which species, which plant part, what dose, and what outcome was studied.

What the evidence says

NCCIH says research does not clearly support cinnamon for any health condition. Diabetes studies have produced conflicting results, and many trials differ in cinnamon species, formulation, dose, and quality.

Evidence strength

Norene’s Farmacy rating for diabetes-related claims: MIXED / INCONCLUSIVE HUMAN EVIDENCE.

Safety

Cassia cinnamon can contain substantial coumarin. Prolonged high intake may be a concern for people with liver disease or those using medicines that affect bleeding. Food amounts are different from concentrated supplement doses.

Source: National Center for Complementary and Integrative Health. Cinnamon: Usefulness and Safety.

Dr. Village Reports is educational information and product guidance, not medical advice.