Drinking more than four cups of coffee a day has been linked to a lower risk of dying from some oral cancers.
The American Cancer Society study found that those who drank more than four cups of the caffeinated drink a day halved their risk of dying from oral cancers compared to those who only occasionally or never drank coffee.
The research, published on the American Journal of Epidemiology website, compared caffeinated coffee, decaffeinated coffee and tea intake with fatal oral and pharyngeal cancers.
They found consuming more than four cups of caffeinated coffee per day was associated with a 49 per cent lower risk of oral cancer death.
"Coffee is one of the most widely consumed beverages in the world, and contains a variety of antioxidants, polyphenols, and other biologically active compounds that may help to protect against development or progression of cancers," said lead author Janet Hildebrand.