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Coffee Might Curb Alcoholic Cirrhosis

Study Shows Fewer Cases of Alcoholic Cirrhosis in Coffee Drinkers
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WebMD Health News
Reviewed by Louise Chang, MD

June 12, 2006 -- Coffee may contain an ingredient that protects the liver against alcoholiccirrhosiscirrhosis, a new study shows.

The study, published in the Archives of Internal Medicine, shows that among more than 125,000 people studied for up to 22 years, coffee drinkers were less likely to be diagnosed with alcoholic cirrhosis.

"These data support the hypothesis that there is an ingredient in coffee that protects against cirrhosis, especially alcoholic cirrhosis," the researchers write.

But they aren't recommending that anyone rely on coffee to prevent alcoholic cirrhosis. Not drinking heavily is a better strategy for liver health, the researchers note.

They included Arthur Klatzky, MD. He works in the research division of Kaiser Permanente Medical Care Program of Oakland, Calif.

Coffee and Alcohol

Participants signed up for the study between 1978 and 1985. They were followed until the end of 2001.

Upon joining the study, participants got a checkup and completed surveys about their use of alcohol, coffee, tea, and cigarettes. None had already been diagnosed with liver problems.

Most participants noted drinking light or moderate amounts of alcohol (up to two daily drinks). Only 8% admitted drinking three or more alcoholic drinks per day.

Typical coffee consumption was one to three daily cups, noted by 42% of the group. Another 16% reported drinking four or more daily cups of coffee.

Alcoholic Cirrhosis Rarer

Over the years, 330 participants were diagnosed with cirrhosis; 199 of those cases were alcoholic cirrhosis. The remaining cases of cirrhosis were nonalcohol related.

For every daily cup of coffee that participants reported drinking, they were 22% less likely to have been diagnosed with alcoholic cirrhosis during the study, Klatzky's team reports.

The odds of developing nonalcoholic cirrhosis weren't linked to coffee consumption.

Coffee drinkers were also less likely to have high blood levels of liver enzymes. That pattern was strongest in people with the highest reported alcohol consumption.

Participants only took the survey once -- when the study started. So the data don't include changes in coffee or alcohol consumption.

People don't always report their drinking habits accurately, note Klatzky and colleagues, adding that participants' alcohol use is "relatively stable."

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