Evidence supporting the use of: Ceylon cinnamon
For the health condition: Metabolic Syndrome
Synopsis
Source of validity: Scientific
Rating (out of 5): 2
Ceylon cinnamon (Cinnamomum verum) has been investigated for its potential benefits in supporting or treating metabolic syndrome, which is characterized by a cluster of conditions including insulin resistance, elevated blood glucose, dyslipidemia, hypertension, and central obesity. The interest in cinnamon, particularly Ceylon cinnamon, arises from its polyphenolic compounds that may have insulin-sensitizing and antioxidant properties.
Several in vitro and animal studies suggest that cinnamon may improve glucose uptake and modulate carbohydrate metabolism. Human clinical trials have yielded mixed results. Some meta-analyses and randomized controlled trials (RCTs) indicate modest reductions in fasting blood glucose, HbA1c, and lipid parameters in individuals with type 2 diabetes or metabolic syndrome after cinnamon supplementation. However, many of these studies used Cinnamomum cassia rather than Ceylon cinnamon, and dosages and durations varied widely.
Ceylon cinnamon is considered safer for long-term use compared to Cassia cinnamon due to its lower coumarin content, which can be hepatotoxic in high amounts. Nevertheless, the overall clinical evidence specific to Ceylon cinnamon for metabolic syndrome remains limited and of low quality, with inconsistent findings and small sample sizes. Therefore, while there is some scientific rationale and preliminary evidence for its use, robust clinical trials are lacking. Health authorities do not currently endorse Ceylon cinnamon as a standalone treatment for metabolic syndrome.
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