From the Memorial Sloan Kettering Cancer Center
Ginger has been shown to help relieve nausea and vomiting.
Ginger root contains compounds that may help relieve or prevent nausea and vomiting. These substances can increase the flow of saliva and digestive juices and may also help calm the stomach and intestine. Scientists are still unsure exactly how ginger exerts these effects. In humans, studies have shown that eating fresh ginger (but not dried ginger) in high doses can “thin” the blood by preventing the platelets from sticking together. In addition, laboratory studies suggest that ginger can protect brain cells from the plaques that cause Alzheimer’s disease, but this effect has not been studied in humans.
To stimulate appetite
Ginger is known to stimulate the flow of saliva and digestive secretions, but clinical trials have not been performed.
To relieve indigestion
Compounds found in ginger are known to stimulate the flow of saliva and digestive juices, reduce gas, and calm the stomach and intestine, but human data are lacking.
To treat diarrhea
Compounds found in ginger are known to calm the stomach and intestine, but scientific evidence is lacking.
To treat nausea and vomiting
Several clinical trials support use of ginger for short-term treatment of nausea and vomiting associated with chemotherapy and motion sickness. However, because of blood-thinning effects, ginger supplements should not be used around the time of surgery. It is also not suggested for use during pregnancy because of possible unknown risks to the developing embryo.
To treat rheumatoid arthritis and osteoarthritis
A few studies have been conducted with positive results but more research is needed.
To treat respiratory ailments
Certain compounds in ginger may improve inflammation and protect against certain viruses, but no human studies have been conducted to confirm this.
To treat drug withdrawal symptoms
A small animal study suggests that ginger may help ease withdrawal symptoms from drugs like morphine. However, no other studies have been published and human studies would be needed to see if this was true.