Researchers found people with gum disease who ate two grapefruits a day for a fortnight showed significantly less bleeding from the gums.
They believe this is due to an increase in blood levels of vitamin C, known to promote wound healing and cut damage by unstable free radical molecules.
The research, by Friedrich Schiller University in Germany, is published in the British Dental Journal.
The study of 58 people with chronic gum disease found that eating grapefruits had a positive effect on both smokers and non-smokers.
Steve - keep in mind that while grapefruit has its benefits, when mixed with certain medications and dietary supplements, it can create adverse effects. Contact your pharmacist to see if any of your medications contraindicate with grapefruit. In addition, this study showed benefits from people eating grapefruits, not grapefruit juice. There is a big difference.