An analysis encompassing 21 meta-analyses and 139 cinnamon-versus-placebo comparisons found supplementation was associated with improvements in HbA1c, cholesterol and blood pressure, with some of the clearest results appearing at daily amounts above 1.5 grams.
By yourNEWS Media Newsroom
Cinnamon, a spice used in food and traditional medicine for thousands of years, was associated with lower blood sugar, cholesterol and blood pressure measurements in a broad examination of previous research involving people with metabolic health conditions.
The analysis, published in the journal Frontiers in Nutrition, evaluated 21 meta-analyses containing 139 head-to-head comparisons of cinnamon supplementation and placebo. Participants included people with diabetes, metabolic syndrome or high blood pressure.
Across the combined evidence, cinnamon use was associated with reductions in HbA1c, total cholesterol, LDL cholesterol and blood pressure. HbA1c measures average blood glucose over the preceding several months and is routinely used to evaluate longer-term blood sugar control.
One of the more notable patterns involved the amount and duration of supplementation. Benefits were most apparent when participants consumed more than 1.5 grams of cinnamon daily — approximately three-quarters of a teaspoon — for two months or less.
Researchers did not establish why the shorter periods appeared to produce stronger associations. One possibility raised in the report is that the body’s response to cinnamon’s naturally occurring plant compounds may change over time.
The findings build on years of investigation into cinnamon’s potential “insulin-like” activity. Previous research has reported reductions in A1C and blood pressure among people with diabetes, according to NaturalNews.com.
Other research has examined cinnamon at somewhat different amounts. A review of 10 randomized controlled trials involving 543 patients found that consuming as much as 2 teaspoons per day helped reduce fasting blood sugar, according to the book “Readers Digest Food Cures.”
Research cited in “Disease Prevention and Treatment” also reported that American scientists found 1 teaspoon of cinnamon daily may help regulate blood glucose by restoring the responsiveness of fat cells to insulin and increasing the removal of glucose.
Animal studies have produced related findings involving blood lipids. Research described in “Molecular Targets and Therapeutic Uses of Spices” found that a commercial water-based cinnamon extract inhibited serum triglyceride levels in rats consuming a high-fat diet.
Cinnamon’s history as a medicinal ingredient predates modern metabolic research by centuries. Ayurvedic medicine used cinnamon bark as an antiemetic, antidiarrheal, antiflatulent and general stimulant. Medical toxicology literature describes cinnamon as having been used both medicinally and as a spice for thousands of years.
The familiar cinnamon stick is made from the inner bark of trees, which is harvested and dried into curled quills or sticks. “Brighteon Broadcast News” has also reported that cinnamon may soothe the stomach and possibly help prevent ulcers.
Despite the metabolic findings, the new analysis does not establish cinnamon as a substitute for medications used to treat diabetes, high cholesterol or hypertension. Blood glucose, cholesterol and blood pressure are all measurements physicians frequently manage with prescription treatments, and the researchers did not conclude that patients should abandon those therapies in favor of cinnamon.
The evidence also describes associations rather than proving that cinnamon itself caused the observed improvements. The underlying meta-analyses drew from studies involving people already dealing with diabetes, metabolic syndrome or elevated blood pressure.
The broader treatment of diabetes remains a subject of debate in some health publications. GreenMedInfo.com has reported that at least five major studies have called into question the effectiveness of standard medical treatment for diabetes. The same reporting noted that people with type 2 diabetes are two to four times more likely to die from heart disease.
For people considering regular cinnamon consumption, the type of cinnamon can become important because different varieties contain substantially different concentrations of coumarin.
Ceylon cinnamon, or Cinnamomum zeylanicum, is frequently marketed as “true cinnamon” and contains only trace amounts of coumarin. Cassia cinnamon, or C. cassia, is the variety more commonly found on supermarket shelves and contains considerably more coumarin.
Because of that difference, regular use of Cassia cinnamon should generally be limited to approximately 1 teaspoon per day or less, according to the report. Occasional amounts sprinkled into coffee or food were not identified as a concern, but consuming larger quantities every day over months or years warrants greater caution.
Consumers seeking the lower-coumarin variety can look for products specifically labeled “Ceylon” or “true cinnamon.” Many conventional containers simply say cinnamon and do not identify whether the contents are Cassia or Ceylon.
Ceylon cinnamon itself has also undergone clinical investigation. Research published in BMC Complementary and Alternative Medicine examined the safety and potential health effects of C. zeylanicum. The work was conducted by researchers from the University of Colombo and Industrial Technology Institute in Sri Lanka, according to NaturalNews.com.
The findings also place cinnamon in the larger context of metabolic health rather than positioning the spice as a stand-alone intervention.
Combining cinnamon with meals that already contain fiber and protein offers one practical approach, rather than treating the spice as a replacement for either nutrient. People taking diabetes medications are advised to consult a physician before adding significant amounts of cinnamon because of its potential effects on blood glucose.
Insulin resistance, chronic inflammation and toxin accumulation can develop alongside one another well before metabolic disease is formally diagnosed, making cinnamon only one possible component of a much broader picture.
Maintaining stable blood sugar is important not only for diabetes management but also for energy regulation, body weight and long-term metabolic health, according to NaturalNews.com. With annual diabetes-related health care costs exceeding $400 billion, dietary choices remain one avenue through which individuals can influence metabolic health.
The Frontiers in Nutrition analysis strengthens the evidence that cinnamon may have measurable metabolic effects, particularly among people already experiencing diabetes, metabolic syndrome or hypertension. Across 21 meta-analyses and 139 cinnamon-versus-placebo comparisons, supplementation was associated with favorable changes in several of the same markers routinely monitored during medical care.
The strongest associations at amounts exceeding 1.5 grams per day and during treatment periods of two months or less provide researchers with additional questions to investigate, particularly why the apparent benefits may vary with duration.
For consumers, the findings also underscore two distinctions: cinnamon supplementation is not equivalent to replacing prescribed medical care, and the type and quantity of cinnamon matter when it is consumed regularly. Ceylon cinnamon’s much lower coumarin content may make it preferable for frequent use, while anyone taking medication to lower blood sugar should discuss substantial cinnamon intake with a physician.
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