Featured photo: Zingiber officinale (common name- ginger) plant
While there is a reference in literature on the possible blood sugar reducing property of ginger; in the course of my research, I did not find any credible scientific study that would support this claim. Ginger is not also listed as an antidiabetic herb either in Ayurvedic or TCM scientific literature.
There are, though, generic claims that ginger compounds were immune-modulatory, anti-tumorigenic, anti-inflammatory, anti-apoptotic, anti-hyperglycemic, anti-lipidemic, and anti-emetic.
Trials with highly purified ginger extract were conducted by Altman et al. (2011) on patients with osteoarthritis pain caused by standing for extended periods of time. The relief observed was moderate with mild gastrointestinal side effects.
These studies appear to validate the beneficial impact of ginger on osteoarthritis patients as mentioned in ancient Chinese and Ayurvedic herbal medicine practices. Ginger and turmeric are used as herbal remedies for osteoarthritis. (Wigler et al., 2003)
There is a body of scientific literature in support of many other medicinal properties of ginger but blood sugar reduction is not one of them.
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