Drinking coffee regularly helps protect liver health
A new study has found that drinking caffeine-free coffee can protect your liver just as much as drinking regular coffee, LiveScience reported.
The researchers found that those who drank large amounts of coffee daily had relatively low levels of liver enzymes, whether decaf or regular coffee. This suggests that a chemical in coffee protects the liver, but not caffeine.
Other studies have also found that coffee consumption reduces people's risk of diabetes, cardiovascular disease, nonalcoholic fatty liver disease, cirrhosis and liver cancer.
"Previous studies have found that coffee consumption may have protective effects on the liver," said Dr. Shaw Qian, principal investigator at the National Cancer Institute, in a statement."However, at the time there was no clear evidence that decaffeinated coffee had the same effect."
To answer the decaf question, Shaw and his colleagues used data from the National Health and Nutrition Survey, a health survey conducted by the Centers for Disease Control and Prevention of people living in the United States. In this survey, participants not only had to be interviewed, but also underwent various physical examinations, including blood tests.
The researchers looked at about 27,800 people over the age of 20 and asked them how much coffee they had consumed in the past 24 hours. The team also looked at several important indicators of liver health in their blood samples, including alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP) and gamma-glutamyl aminotransferase (GGT). Elevated liver enzyme levels may indicate liver damage or signs of inflammation.
The results showed that people who drank more than three cups of coffee a day had liver enzyme levels four times lower than those who did not drink coffee. Surprisingly, whether a person drank regular coffee or decaffeinated coffee, their effects on liver enzyme levels were almost identical.
"Our results suggest a link between decaffeinated coffee and lower liver enzyme levels," Shaw said,"but further research is needed to determine which components of coffee have this effect."
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