Does coffee protect against liver cirrhosis?

Area of Science:

• Hepatology
• Gastroenterology
• Nutritional Epidemiology

Background:

• Liver cirrhosis is a major global health concern.
• Coffee consumption is widespread, and its potential health effects are of significant interest.
• Previous research suggests a potential link between coffee and liver health, but further quantification is needed.

Purpose of the Study:

• To investigate the association between coffee and other methylxanthine-containing beverage consumption and the risk of developing liver cirrhosis.
• To quantify the relationship between coffee intake (quantity and duration) and liver cirrhosis risk.

Main Methods:

• A hospital-based case-control study was conducted in Italy.
• 101 patients with liver cirrhosis (cases) and 1538 controls were included.
• Multivariate analyses were used to adjust for potential confounding factors such as tobacco and alcohol consumption.

Main Results:

• A significant inverse association was observed between coffee consumption and liver cirrhosis.
• Odds ratios (OR) decreased with increasing coffee intake: OR=0.77 for 1 cup/day, OR=0.57 for 2 cups/day, and OR=0.29 for 3+ cups/day.
• A longer duration of coffee consumption (≥40 years) was also associated with reduced risk (OR=0.45). No significant associations were found for decaffeinated coffee, tea, or cola.

Conclusions:

• The study confirms and quantifies an inverse relationship between coffee consumption and liver cirrhosis.
• The findings suggest that regular coffee consumption may be protective against liver cirrhosis.
• Potential confounding by reduced coffee intake in individuals with early-stage cirrhosis warrants consideration.