Consuming greater amounts of caffeine, including soft drinks, tea and coffee, may help reduce the risk of death for people with chronic kidney disease, according to a study.

Researchers sought to determine whether the association between coffee consumption and mortality of those with the disease matched previous research that showed the relationship in the general population. Their findings were published Wednesday in the journal Nephrology Dialysis Transplantation.

The possible protective effect has been shown to be related to vascular effects because caffeine is known to promote the release of substances, such as nitric oxide, that improve the vessels’ function. About 14 percent of adults have chronic kidney disease in the Untied States, according to the National Institute of Diabetes and Digestive and Kidney Diseases. Around 468,000 individuals are on dialysis.

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