Nausea induced by chemotherapy treatment can be held in check by eating ginger, according to an American Society of Clinical Oncology report.
It has published research from the University of Rochester in New York indicating that patients who take ginger before treatment suffer fewer and less severe bouts of nausea.
Sickness has led to patients either cutting short their chemotherapy sessions or refusing to undergo them, which lessens their chances of survival.
Fresh ginger has been used for generations as an alternative remedy for stomach and intestinal aches and pains, and is widely available in capsule form.
The report warns that many food and drink products that purport to include ginger only contain flavour compounds, which may not have any beneficial effect.
Rochester study leader Julie Ryan says that only a ginger root extract was tested, and it is not known whether people would benefit from ginger teas or powdered ginger sold as a spice.