Blood sugars is the reasons cinnamon has sttracted so much attention. Some reaserch suggests cinnamon may have a modest effect on fasting blood glucose, yet the evidence is far from conclusive. And there is an important detail that often gets overlooked, not all cinnamon is the same.
Ceylon cinnamon (Cinnamomum verum) sometimes called true cinnamon, is different from the more commonly used Cassia varieties. So, what does the research actually tell us? And can adding Ceylon cinnamon to your everyday diet be a sensible choice if you’re trying to maintain healthy blood sugar levels?
Let’s look at the evidence without the exaggerated health claims.
Research into cinnamon and blood sugar has produced mixed results. Some clinical reviews have reported reduction in fasting blood glucose or measures related to insulin resistance, while other trials have found little or no meaningful effect. The National Center for Complementary and Integrative Health (NCCIH) currently concludes that the evidence in not strong enough to say that cinnamon supplementation can reliably control diabetes or blood sugar.
That distinction matters. Cinnamon should not be considered a treatment fot diabetes, and it should never replace prescribed medication, a balanced diet, physical activity or advice from your healthcare professional. Instead, I think of Ceylon cinnamon as a simple food ingredient that can add flavour to an otherwise balanced diet.
There is stillan interestinh area of research here. Studies have explored whether compunds in cinnamon could influence how the body handles glucose, including processes involved in insulin sensitivity and glucose uptake. A systematic review published in 2022 found the overall evidence to be conflicting, with results varying according to the type of cinnamo, amout used, study length and characteristics of the participants.
More recent research continues to investigate the relationship. A 2025 umbrella revuiew of meta-analyses reported assocoations between cinnamon suplementation and improvements in fasting blood glucose and some other metabolic measures, particularly in people with metabolic conditions. Hoever, the researchers also highlighted difference between studies, meaning the findings should be interpreted carefully rather than treated as proof that cinnamon will lower blood sugar for everyone.
Here’s where the type of cinnamon becomes particularly relevant.
Many studies simply refer to “cinnamon” without identifying the species used. That makes it difficult to apply their findings specifically to Ceylon cinnamon. NCCIH highlights this problem, noting that different cinnamon species and different pasrts of the plant have different chemical compositions.
Ceylon cinnamon, traditionally grown in Sri Lanka. One of its best-known differences from Cassia cinnamon is its lower levels of coumarin. Cassia generally contains considerably more coumarin. a compound that can be a concern when consumed in large amounts. Particularly for people who are sensitive to it or have liver pronlems.
For everyday cooking, that makes choosing Ceylon cinnamon an appealing option if you enjoy cinnamon regularly.
The practicle approach is simple: use it as a spice, not as a medicine. Sprinkle it over porridge, stir it into natural yoghurt, add it to coffee or tea. Or use it in baking and cooking. These small changes can make meals more enjoyable without relying on exaggerated promises about blood sugar.
And if you’re specifically looking to support healthy blood sugar levels, focus on the bigger picture too. Choose minimally processed foods, include fiber-rich ingredients, stay physically active and follow personilised advice from your healthcare professional where appropriate. Enjoy cinnamon as much as you can, it is a wonderfull spice with many benefits, but it should not be treated as blood sugar medicine or magic cure.
At zoetic, we believe you should know exactly what you’re buying. Our Ceylon cinnamon powder is sourced from Sri Lanka, giving you a convenient way to add genuine Ceylon cinnamon to everyday food and drinks. Explore Zoetic Ceylon Cinnamon Powder.
The bottom line? Ceylon cinnamon is an interesting subject of ongoing research, but it isn’t a cure or treatment for diabetes. The evidence suggests there may be potencial benefits for blood glucose management, but researchers still need better, more consistent studies, particularly studies specifically examining Ceylon cinnamon.
For now, enjoy it for what is unquestionably is, a fragrant, versatile spice with long culinary history. And if you’re going to use cinnamon regularly, chossing authentic Ceylon cinnamon is a sensible place to start.
