Dried, powdered ginger root has been used extensively in naturopathic medicine for at least 2,000 years. Modern herbalists continue to recommend this fragrant, spicy root as a remedy for common diseases, conditions and symptoms. Many of ginger's most popular uses are well supported by scientific evidence, but others warrant further research.
Effective Uses
Clinical studies have supported some of ground ginger's medicinal uses. According to the National Institutes of Health, ginger is "possibly effective" as a treatment for nausea and vomiting after surgery. Clinical evidence also supports ginger's value as a treatment and prevention for dizziness. Although its exact effects on fetal health remain under-researched, ginger root supplements also seem to ease nausea and vomiting associated with pregnancy. Although these medicinal properties are well documented, more research is necessary before scientists can draw a firm conclusion on ginger's safety and efficacy.
Ineffective Uses
The National Institutes of Health regards powdered ginger as "possibly ineffective" as a treatment option for motion sickness and seasickness, stating that there is "no hard evidence" of its efficacy. The University of Maryland Medical Center cites encouraging but inconsistent evidence of ginger's value in preventing motion sickness, but acknowledges that some studies have found no benefit.
Under-Researched Uses
Many of the most common medicinal uses of ginger are under-researched. There is not enough clinical evidence to prove or refute the safety or efficacy of ginger for these purposes. According to the National Institutes of Health, there is insufficient evidence in favor of, or against, powdered ginger's use as a treatment for poor appetite, viral infection, migraine or arthritis. Studies of these uses have either been poorly designed or have given inconsistent results.
Safety
Ginger is generally safe for the majority of people. According to the University of Maryland Medical Center, daily ingestion of up to 4 grams of ginger root is generally safe. However, the UMMC notes that excessive doses of powdered ginger may cause mild diarrhea, heartburn and mouth irritation. The UMMC advises patients to take ground ginger in capsules to minimize the risk of these side effects.
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