Cinnamon (Dalchini)
The most important distinction in spices: Ceylon is safe daily. Cassia contains coumarin at liver-damaging doses.
TLDR — Cinnamon
- There are two types sold as cinnamon in India: Ceylon (C. verum) and Cassia (C. aromaticum/cassia)
- Cassia coumarin content: 1–12mg/g. Ceylon coumarin: 0.004mg/g — 250–3000× lower
- The EU tolerable daily intake for coumarin is 0.1mg/kg bodyweight — 1/2 tsp of Cassia exceeds this for a 60kg adult
- For blood sugar: 1–6g (1/4–1.5 tsp) Ceylon cinnamon daily reduces fasting glucose in Type 2 diabetics in multiple RCTs
- Ceylon cinnamon has thinner, lighter, multi-layered quills that crumble when pressed; Cassia is a single thick hard roll
- Most cinnamon sold in India is Cassia — verify before daily therapeutic use
Ceylon vs Cassia — The Critical Difference
Cinnamon is one of the oldest known spices, but the name covers two very different species:
Ceylon cinnamon (Cinnamomum verum or C. zeylanicum) — “true cinnamon” from Sri Lanka. Delicate, multi-layered quills. Complex, sweet flavour. Very low coumarin.
Cassia cinnamon (Cinnamomum aromaticum, C. cassia, or C. burmannii) — Chinese, Indonesian, or Vietnamese cinnamon. Single, hard, woody rolls. Stronger, more intense flavour. High coumarin.
Most cinnamon sold in India, Europe, and North America is Cassia — it is cheaper and easier to produce.
Nutritional Profile
Cinnamon — Nutrition Facts (per 100g)
Per 100g cinnamon powder
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Energy | 247 kcal | — |
| Protein | 4.0 g | — |
| Total Fat | 1.2 g | — |
| Carbohydrates | 80.6 g | — |
| Dietary Fibre | 53.1 g | 190% |
| Calcium | 1002 mg | 100% |
| Iron | 8.3 mg | 46% |
| Manganese | 17.5 mg | 760% |
| Cinnamaldehyde | ~60–80% of essential oil | — |
The Coumarin Problem with Cassia
Ceylon vs Cassia Cinnamon — Safety and Nutrition
| Parameter | Ceylon Cinnamon | Cassia Cinnamon |
|---|---|---|
| Scientific name | C. verum / C. zeylanicum | C. aromaticum / C. burmannii |
| Coumarin content | 0.004mg/g (negligible) | 1–12mg/g (significant) |
| Safe daily dose | Up to 6g (1.5 tsp) per day | Under 0.5g (1/8 tsp) for 60kg adult |
| Liver toxicity risk | No concern at food doses | Real at >0.5–1g daily for weeks |
| Blood sugar benefit | Documented in RCTs | Also documented but riskier at doses studied |
| Flavour | Delicate, sweet, complex | Strong, spicy, more intense |
| Quill appearance | Thin multi-layered rolls, crumbles when crushed | Single thick hard roll, woody |
| Price | More expensive | Cheaper — most commonly sold |
For daily therapeutic use (blood sugar, anti-inflammatory), only Ceylon cinnamon is safe at effective doses. Cassia is fine in cooking amounts occasionally.
Blood Sugar Benefits — Evidence
Multiple randomised controlled trials find cinnamon supplementation (primarily 1–6g/day) reduces fasting blood glucose in Type 2 diabetics:
- A 2003 trial (Khan et al.): 1, 3, and 6g cinnamon daily for 40 days reduced fasting glucose 18–29%
- Meta-analysis (Davis & Yokoyama, 2011): consistent fasting glucose reduction, less effect on HbA1c
- The mechanism: cinnamon polyphenols mimic insulin activity on GLUT-4 transporters and improve insulin receptor signalling
Important caveats:
- Studies used varying amounts and types of cinnamon
- Effect on HbA1c (3-month average) is smaller than effect on fasting glucose
- Not a replacement for diabetes medication — an adjunct
- Must be Ceylon for daily therapeutic doses
Other Health Benefits
Anti-microbial: Cinnamaldehyde is a potent antimicrobial against bacteria and fungi including Candida.
Anti-inflammatory: Cinnamon polyphenols inhibit NF-κB and reduce CRP (C-reactive protein) in inflammation studies.
Cognitive: Animal studies and some preliminary human data suggest cinnamon improves cognitive performance by inhibiting tau aggregation (relevant to Alzheimer’s).
How to Identify Ceylon vs Cassia
Home Test: Visual Test to Distinguish Ceylon from Cassia Cinnamon
Steps
- 1 Examine a whole cinnamon stick (quill)
- 2 Press firmly with your thumbnail into the stick
- 3 Try to roll or crumble the stick between your fingers
Pure / Pass
Ceylon: Multiple thin layers visible in cross-section. Crumbles relatively easily when pressed. Tan-brown colour, softer texture. Rolls apart like paper layers.
Adulterated / Fail
Cassia: Single thick, hard roll that does not crumble. Reddish-brown to dark brown. Very hard — cannot indent with thumbnail. If this is what you have, reduce daily quantity to pinch-amounts only.
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Frequently Asked Questions
Q How much cinnamon is safe per day?
How much cinnamon is safe per day?
Ceylon cinnamon: up to 6g (1.5 tsp) per day is the studied therapeutic dose. Cassia cinnamon: the EU tolerable daily intake for coumarin is 0.1mg/kg bodyweight — for a 60kg adult, this is 6mg coumarin/day, which is reached at approximately 0.5–1g Cassia (1/8–1/4 tsp). For Cassia, cooking amounts (tiny pinch in dishes) are fine. Therapeutic daily doses must use Ceylon only.
Q Is cinnamon in chai a problem?
Is cinnamon in chai a problem?
No — the amount of cinnamon in a cup of chai is typically under 0.5g, which is safe even with Cassia. The concern is with people deliberately taking 1–3 tsp of Cassia powder daily for blood sugar management. Occasional cooking use and chai use are not a liver concern.
Q Can I use cinnamon for diabetes?
Can I use cinnamon for diabetes?
Cinnamon has RCT evidence for reducing fasting blood glucose in Type 2 diabetics. If you want to use it therapeutically, use 1/2–1 tsp Ceylon cinnamon per day in golden milk, yogurt, or oatmeal. Inform your doctor, as it may require adjusting medication doses. Never replace prescribed medication with cinnamon.
Q Which is better for cooking — Ceylon or Cassia?
Which is better for cooking — Ceylon or Cassia?
They are genuinely different flavours. Cassia is stronger, spicier, and more punch-forward — good for Indian chai, rice pudding, and biryani. Ceylon is more delicate, sweet, and complex — better for pastries, golden milk, and where a subtle cinnamon note is needed. For daily therapeutic use, always Ceylon.
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Organic Cinnamon (Dalchini)
Organic cinnamon — variety verified. Lab tested for authenticity and safety.
Last updated: March 2026
Disclaimer: This article is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your doctor or a qualified healthcare provider before making dietary changes, especially if you have a medical condition.