Coffee May Protect the Liver in More Ways Than Scientists Realized

Coffee might protect the liver in more ways than previously thought. A new study from Cedars-Sinai Health Sciences University suggests that drinking coffee is linked to a lower risk of liver damage. This includes conditions like cirrhosis, liver cancer, and death from liver disease.

Coffee's Liver Benefits

Liver disease often progresses silently. Fat builds up, inflammation occurs, and scarring develops over years before any symptoms appear. Researchers looked at over a decade of health records, liver MRI scans, and blood protein analyses. They found biological clues that could explain how coffee is connected to healthier liver tissue and a reduced risk of disease.

Dr. Hyunseok Kim, a hepatologist at Cedars-Sinai and a lead author of the study, noted that previous research hinted at coffee's benefits. However, most studies were smaller or focused on only one aspect. This new study followed hundreds of thousands of people for more than 10 years. It examined their health outcomes, liver MRI scans, and blood protein analyses.

These findings help explain the biological reasons behind coffee's link to better liver health.

Stronger Evidence from a Large Study

The study included 354,957 adults from the UK Biobank. None of them had cirrhosis or liver cancer at the start. Researchers tracked them for about 13 years, noting new cases of cirrhosis, liver cancer, and liver-related deaths. This long follow-up was important because serious liver disease develops slowly.

Compared to people who didn't drink coffee, those who drank five or more cups a day had a 32% lower risk of cirrhosis. They also had a 47% lower risk of liver cancer and a 42% lower risk of liver-related death.

MRI scans showed that coffee drinkers tended to have less liver fat, liver iron, fibrosis (scarring), and liver inflammation. Blood tests also supported these findings. Coffee drinkers had higher levels of proteins linked to healthy liver function and lower levels of proteins related to scarring and inflammation. These molecular details help explain the observed patterns.

Moderate Coffee Intake is Key

While the lowest risks were seen in those who drank more coffee, the researchers don't suggest everyone should drink five or more cups daily. Benefits were observed even with one to two cups a day, and seemed strongest around three to four cups.

Both caffeinated and decaffeinated coffee showed similar results. This suggests that caffeine might not be the only factor. Coffee contains many natural compounds that could affect inflammation, scarring, and liver metabolism.

This was an observational study, meaning it shows a connection but doesn't prove coffee directly prevents liver disease. Coffee should not replace healthy habits or medical care for reducing liver risk.

Dr. Ju Dong Yang, medical director of the Liver Cancer Program at Cedars-Sinai, said the findings support moderate coffee drinking for those who already enjoy it. However, he wouldn't recommend starting coffee solely for liver protection. Prevention should still focus on maintaining a healthy weight, limiting alcohol, exercising, and managing blood sugar, blood pressure, and cholesterol.

Caffeine can also be problematic for some people. Those with high blood pressure, heart rhythm issues, severe anxiety, insomnia, or other medical conditions should consult a doctor before increasing coffee intake.

Future Research

The next step is to find out which specific compounds in coffee are responsible for these liver benefits. Dr. Shelly Lu, director of the Karsh Division of Gastroenterology and Hepatology at Cedars-Sinai, noted that the findings point to biological pathways involving inflammation and scarring. This highlights molecular targets for future research to better understand how coffee affects liver health and who might benefit most.

Deep Dive & References

Coffee Consumption and Improved Liver Outcomes: Clinical, Imaging, and Proteomic Evidence From the UK Biobank - Clinical Gastroenterology and Hepatology, 2026