Description

Cinnamomum verum, commonly known as True Cinnamon or Ceylon Cinnamon, is a small evergreen tree belonging to the Lauraceae family. Native to Sri Lanka (formerly Ceylon) and parts of South India, it is cultivated for its highly aromatic inner bark. The tree grows to a height of 10–15 meters with thick, scabrous bark, strong branches, and ovate-oblong leaves that are bright green on top and lighter underneath. Its flowers are greenish and inconspicuous, producing a small, purple, olive-shaped fruit. The commercial product, cinnamon, is derived from the inner bark, which is carefully harvested, dried, and curls into characteristic quills (sticks). Ceylon cinnamon is noted for its light brown color, a soft, crumbly texture, and a delicate, sweet, and complex flavor profile, distinct from the more common, pungent Cassia cinnamon (Cinnamomum cassia).

Other Names

  • English: Ceylon Cinnamon, True Cinnamon, Sweet cinnamon, Sri Lankan cinnamon, Mexican Cinnamon.
  • Scientific Synonym: Cinnamomum zeylanicum.
  • Spanish: Canela
  • French: Cannelle

Health Benefits

The health benefits of True Cinnamon are linked to its active compounds, including cinnamaldehyde, and its high concentration of antioxidants, such as polyphenols.

  • Antioxidant Properties: It is rich in powerful antioxidants that help protect the body from oxidative damage caused by free radicals and may reduce the risk of chronic diseases such as heart disease and cancer.
  • Anti-inflammatory Effects: Compounds in cinnamon may help reduce inflammation in the body, which is linked to numerous chronic diseases like arthritis or cardiovascular disease.
  • Blood Sugar Regulation: Ceylon cinnamon is particularly studied for its potential to improve insulin sensitivity and lower blood sugar levels by slowing the breakdown of carbohydrates in the digestive tract. The studies suggest cinnamon may improve insulin sensitivity and lower blood glucose levels, making it potentially beneficial for managing type 2 diabetes.
  • Heart Health: Some research suggests it may reduce risk factors for heart disease, including lowering levels of total cholesterol, LDL (“bad”) cholesterol, and triglycerides, while maintaining HDL (“good”) cholesterol.
  • Antimicrobial and Antifungal Activity: The essential oil (Cinnamaldehyde) of cinnamon has been shown to inhibit the growth of certain bacteria and fungi, including Listeria and Salmonella.
  • Cardiovascular Health: Cinnamon may lower cholesterol levels and blood pressure, supporting heart health when consumed in moderation.
  • Neuroprotective effects: Preliminary studies suggest potential in protecting against neurodegenerative diseases.

Other Benefits

Beyond direct health applications, cinnamon has several other uses.

Culinary Spice: It is a beloved spice worldwide, used in both sweet and savory dishes, baked goods, curries, beverages, and desserts.

Aromatherapy and Fragrance: The warm, sweet scent makes cinnamon essential oil a popular choice in aromatherapy for its comforting and stimulating effects. It is also used in perfumes and candles.

Traditional Preservative: Its antimicrobial properties have been exploited for centuries to help preserve food.

Natural Insect Repellent: Cinnamon oil and powder can be an effective deterrent for certain insects, including mosquitoes.

Natural Preservative: Its antimicrobial properties make it useful in food preservation, inhibiting bacterial and fungal growth.

How it is Used

Cinnamon is versatile and can be used in various forms.

Culinary:

  • Quills/Sticks: Used to infuse flavor into drinks, beverages (e.g., chai tea, hot chocolate), stews, and rice dishes.
  • Ground Powder: Added to baked goods, oatmeal, smoothies, and spice rubs.

Medicinal:

  • Tea/Infusion: Made by steeping cinnamon sticks in hot water.
  • Supplements: Available in capsule form, often standardized for blood sugar support.
  • Tincture: An alcohol-based extract.

Topical and Aromatic:

  • Essential Oil: Used in diffusers for aromatherapy or diluted with a carrier oil for topical application. It should not be applied directly to the skin.

Household and Industrial Uses:

  • Production: The spice is added to skincare products, lip balms, and soaps for its fragrance and antimicrobial properties.
  • Household Uses: Cinnamon powder is sprinkled in homes or gardens to repel pests or used in DIY crafts like scented ornaments.

Side Effects

When consumed in typical food amounts, Ceylon cinnamon is generally safe. However, higher doses found in supplements or concentrated extracts carry risks.

  • Coumarin Content: This is a critical distinction between C. verum and C. cassia. Cassia cinnamon contains high levels of coumarin, a compound that can cause liver damage in high doses. Ceylon cinnamon contains negligible amounts of coumarin, making it a safer choice for regular consumption, but excessive intake should still be avoided.
  • Liver Toxicity: The primary risk from consuming large amounts of Cassia cinnamon is liver damage due to coumarin. This risk is significantly lower with True Cinnamon.
  • Blood Sugar Interaction: Due to its blood sugar-lowering effects, individuals with diabetes on medication should monitor their levels closely to avoid hypoglycemia.
  • Skin Irritation: Cinnamon oil and powder can cause skin irritation and allergic reactions in some individuals, especially when applied undiluted.
  • Pregnancy and Breastfeeding: While culinary amounts are likely safe, high doses should be avoided due to a lack of safety data.
  • Gastrointestinal Issues: Large amounts of cinnamon may cause stomach upset, nausea, or diarrhea.

References

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Ranasinghe, P., et al. “Medicinal properties of ‘true’ cinnamon (Cinnamomum zeylanicum): a systematic review.” BMC Complementary and Alternative Medicine, vol. 13, no. 275, 2013, pp. 1–10.

Ranasinghe, Priyanga, et al. “Medicinal Properties of ‘True’ Cinnamon (Cinnamomum verum): A Systematic Review.” BMC Complementary and Alternative Medicine, vol. 13, no. 275, Oct. 2013, doi:10.1186/1472-6882-13-275.

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Rao, Pasupuleti Visweswara, and Siew Hua Gan. “Cinnamon: A Multifaceted Medicinal Plant.” Evidence-Based Complementary and Alternative Medicine, vol. 2014, 2014. Hindawi, doi:10.1155/2014/642942.

Rao, Pasupuleti Visweswara, and Siew Hua Gan. “Cinnamon: A Multifaceted Medicinal Plant.” Evidence-Based Complementary and Alternative Medicine, vol. 2014, 2014, p. 642942, doi:10.1155/2014/642942.

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Van Wyk, Ben-Erik. Culinary Herbs and Spices of the World. University of Chicago Press, 2014.

Zhu, Rui, et al. “Cinnamon and its derivatives for diabetes: From experimental research to clinical trials.” Nutrients, vol. 12, no. 11, 2020, pp. 1–20.