The Short Answer
Use caution with Cassia cinnamon. While it's fine for the occasional cookie or curry, eating it daily can harm your liver. Cassia cinnamon contains high levels of coumarin, a natural compound that is hepatotoxic (toxic to the liver) in large doses.
Even worse, Cassia cinnamon has been the subject of massive lead contamination recalls in 2024 and 2025. Between the liver-damaging coumarin and the neurotoxic lead, regular Cassia cinnamon users are taking a double hit. If you use cinnamon daily for blood sugar control or flavor, you must switch to Ceylon cinnamon ("true cinnamon"), which has virtually no coumarin and a cleaner safety record.
Why This Matters
Your liver has a limit. The European Food Safety Authority (EFSA) sets the safe daily intake of coumarin at 0.1 mg per kg of body weight. For a 150lb adult, that's roughly 6.8 mg. One teaspoon of Cassia cinnamon can contain between 5 mg and 18 mg of coumarin. Meaning? One teaspoon can put you over the safety limit.
Lead is a silent neurotoxin. Unlike coumarin, which is naturally occurring, lead contamination comes from the soil or processing equipment. Recent testing by Consumer Reports found that one-third of cinnamon powders tested had lead levels high enough to trigger a recall in New York. There is no safe level of lead exposure, especially for children.
Not all cinnamon is the same. Most people don't realize there are two distinct species. Cassia (the cheap, spicy, dark stuff) is what you likely have. Ceylon (the mild, expensive, tan stuff) is the safe alternative. Ceylon Vs Cassia Cinnamon covers the flavor differences in depth.
What's Actually In Cinnamon
When you buy a generic bottle of "Ground Cinnamon," you are almost certainly buying Cinnamomum cassia.
- Coumarin ā A natural blood-thinning compound found in high concentrations in Cassia (up to 1%). In Ceylon cinnamon, it's barely detectable (0.004%). Is Cassia Cinnamon Bad For You
- Cinnamaldehyde ā The oil responsible for the smell and blood sugar benefits. Both types have this, which is why Ceylon is still effective for health.
- Heavy Metals ā Cinnamon trees absorb lead from soil easily. Cassia, largely grown in China, Vietnam, and Indonesia, frequently tests higher for lead than Ceylon varieties grown in Sri Lanka. Is There Lead In Cinnamon
What to Look For
Green Flags:
- "Ceylon" on the label ā If it doesn't say Ceylon, it's Cassia.
- Origin: Sri Lanka ā This is the home of true cinnamon.
- Visuals (Sticks) ā Look for tightly rolled, thin layers (like a cigar).
- Visuals (Powder) ā Ceylon is a lighter, tan color; Cassia is reddish-brown.
Red Flags:
- "Saigon" or "Vietnamese" Cinnamon ā These varieties often have the highest coumarin levels of all.
- "Korintje" or "Indonesian" Cinnamon ā Common commercial Cassia varieties.
- Thick Bark ā If the stick is one thick, hard layer of bark that curls inward, it's Cassia.
- Unspecified Origin ā "Imported" usually means mixed Cassia sources.
The Best Options
Based on recent Consumer Reports testing (2024) and FDA recall data.
| Brand | Product | Verdict | Why |
|---|---|---|---|
| Morton & Bassett | 100% Organic Ground Cinnamon | ā | Lowest lead levels in recent testing. |
| Sadaf | Cinnamon Powder | ā | Tested safe for daily use. |
| 365 Whole Foods | Organic Ground Cinnamon | ā | Generally clean, but watch for recent batch variation. |
| McCormick | Ground Cinnamon | ā ļø | "Acceptable" lead levels, but it is Cassia (high coumarin). |
| Badia | Ground Cinnamon | š« | High lead levels found in testing. |
| Paras / EGN | Cinnamon Powder | š« | Extremely high lead. Avoid completely. |
Note: Even "clean" brands can have batch variations. We recommend checking Cleanest Spice Brands for our latest independent testing reviews.
The Bottom Line
1. Trash the generic powder. If you have a jar of "Ground Cinnamon" (Cassia) from a brand listed in recent recalls (like Badia, Paras, or store brands), throw it out.
2. Buy whole sticks. It is much harder to adulterate a whole cinnamon stick than powder. Grinding your own Ceylon sticks is the safest route. Whole Vs Ground Spices
3. Limit usage. If you must use Cassia, keep it to 1/4 teaspoon per day max to stay safe from coumarin toxicity.
FAQ
Is Saigon cinnamon better than Cassia?
No, it's actually riskier. Saigon (Vietnamese) cinnamon is a type of Cassia that is prized for its strong flavor, but it typically contains the highest levels of coumarināoften significantly more than regular Chinese Cassia.
Can I cook the coumarin out of cinnamon?
No. Coumarin is a stable compound and does not degrade with heat. Baking it into apple pie does not reduce the toxicity risk.
How do I know if I have lead poisoning from cinnamon?
You likely won't feel it immediately. Lead accumulates in the body over months and years. Symptoms are vagueāfatigue, brain fog, high blood pressure. If you've been consuming recalled brands daily, ask your doctor for a blood lead level test. Is There Lead In Cinnamon