Cinnamon extract plays a significant role in lowering blood sugar levels

Cinnamon is one of the oldest spices. It is mentioned in the Bible, and in ancient Egypt, people used it not only as a flavoring for beverages and as a medicine but also as a preservative. Cinnamon was highly prized, considered even more precious than gold. Around this same period, cinnamon also garnered widespread attention in China; it is mentioned in the earliest texts concerning Chinese herbal medicine, dating back to approximately 2700 BC.

Cinnamon has enjoyed enduring popularity throughout history. Its popularity has recently experienced a resurgence, driven by a series of clinical studies confirming its benefits in blood sugar control.

Although not all initial studies demonstrated positive effects, recent research involving patients with Type 2 diabetes has yielded consistently promising results. In experimental models and animal studies, researchers have confirmed that cinnamon polyphenols possess insulin-like properties, facilitating glucose uptake in skeletal muscle and other body tissues.

Two review articles examining the effects of cinnamon on blood sugar control in Type 2 diabetes have been published.The first, published in the September 2011 issue of the Journal of Medicinal Food and authored by researchers at the University of California, Davis, analyzed eight clinical studies investigating the impact of cinnamon and cinnamon extracts on patients with Type 2 diabetes or prediabetes. The authors reported that both forms of cinnamon resulted in a statistically significant reduction in fasting blood glucose levels.

In a more recent meta-analysis—conducted by researchers at the University of West London and published in the May 12, 2012, issue of the journal Clinical Nutrition—researchers focused exclusively on the effects of cinnamon on blood sugar control in patients with Type 2 diabetes. Analyzing six randomized controlled trials involving 435 patients, the researchers concluded that cinnamon helps to control blood glucose levels. Another double-blind study was recently published in the June 2012 online edition of Nutrition Research. This study utilized a water-soluble cinnamon extract. Sixty-six patients with Type 2 diabetes were divided into three groups: a placebo group, a group receiving a daily cinnamon supplement of 120 mg, and a group receiving 360 mg daily; the intervention lasted for three months. All participants were also taking the anti-diabetic medication gliclazide.

The results indicated that after three months, the fasting blood glucose levels of patients taking cinnamon decreased significantly: by an average of 18 mg/dL in the low-dose group and 29 mg/dL in the high-dose group. No changes were observed in the placebo group. Furthermore, triglyceride levels also decreased significantly in the low-dose group—by an average of 68 mg/dL—though they decreased only slightly in the high-dose group. However, although HbA1c levels (which reflect blood glucose control over a three-month period) declined in both groups, they did not reach ideal levels. This implies that additional measures—such as weight loss, a low-glycemic diet, and exercise—are still required. The cinnamon extract used in the study was administered as 60 mg tablets, derived from 2.4 grams of natural cinnamon. Consequently, the dosages of this water-soluble extract corresponded to 4.8 grams and 14.4 grams of cinnamon, respectively. Various forms of cinnamon extract, as well as natural cinnamon powder, are available on the market, all of which have demonstrated favorable clinical efficacy. I recommend utilizing a water-soluble extract at a dosage equivalent to that used in the study. Additionally, cinnamon extracts standardized for A-type polymers offer superior quality control; typically, these extracts are standardized to contain 3% A-type polymers.

In summary, while cinnamon and cinnamon extracts are beneficial for patients with Type 2 diabetes, they are not a panacea. In most cases, additional interventions are necessary.