Cinnamomum verum / C. cassia · Bark
Cinnamon
Traditional + some evidenceCinnamon was among the precious spices of the holy anointing oil in Exodus and was once worth more than silver. Today it fills kitchens with warmth.
Traditionally used for
- Traditionally used as a warming digestive spice
- Used in Chinese tradition (cassia) as a warming herb
What research says
NCCIH reports that studies of cinnamon and blood sugar have had mixed results, and cinnamon has not been shown to help any health condition conclusively.
How people use it
- Sticks simmered in tea, cider or rice pudding
- Ground in oatmeal, baking and Middle Eastern stews
Safety and interactions
- Cassia cinnamon contains coumarin, which in large amounts may harm the liver
- Ceylon (true) cinnamon is lower in coumarin
- Food amounts are generally safe
Always talk with your doctor or pharmacist before using cinnamon as a supplement, especially with prescription medicine, in pregnancy or before surgery.
Sources
Reviewed October 25, 2026. Evidence tier: Traditional + some evidence: Long traditional use; human research is limited, small or mixed. How we rank evidence.