Coffee is one of the most popular beverages worldwide. While excessive caffeine consumption can be harmful, moderate intake offers numerous benefits for the liver.
Drinking black coffee without added sugar and cream can support liver health. A 240 ml cup of black coffee contains B vitamins (B1, B3, B5, B9 - folate, B12) and minerals like potassium, magnesium, manganese, and phosphorus, along with a rich supply of antioxidants. The liver-protective effects are attributed to caffeine, chlorogenic acid (an antioxidant), and diterpenes (kahweol, cafestol) found in coffee.
Non-alcoholic fatty liver disease (NAFLD) is common in individuals who are overweight, obese, have diabetes, or lipid disorders. Uncontrolled, it can progress to cirrhosis or liver cancer. While coffee does not treat fatty liver disease, it acts as a supportive factor. When caffeine is metabolized, the body produces paraxanthine, a substance that can slow the formation of scar tissue (fibrosis) in the liver. This helps to slow the progression of cirrhosis, hepatitis B and C, and fatty liver disease.
Coffee contains two bioactive compounds, cafestol and kahweol, which have demonstrated anti-inflammatory and liver-protective effects. Certain acids in coffee can also inhibit the hepatitis B virus, contributing to a reduced risk of chronic liver damage.
Moderate daily coffee consumption can also help lower the risk of liver disease. This is because compounds in the beverage contribute to reducing the risk of hepatocellular carcinoma (HCC), a common form of liver cancer. Higher coffee intake correlates with a lower risk of HCC. While green tea also offers benefits, coffee's effects are more potent.
Both regular and decaffeinated coffee are linked to a reduced risk of liver disease, as compounds beyond caffeine also play a protective role. Studies indicate optimal liver benefits are achieved with about 3-4 cups of coffee daily; consuming more has not shown additional benefits. However, healthy adults should limit caffeine intake to under 400 mg per day (equivalent to about 2-3 354 ml cups of coffee, depending on preparation).
Not everyone tolerates coffee well. For some, coffee can cause headaches, insomnia, nervousness, or anxiety; individuals with arrhythmias or cardiovascular disease should exercise particular caution. For liver benefits, prioritize black coffee, limiting added sugar, cream, and full-fat milk; alternatives like skim milk or plant-based milk can be used. While coffee consumption generally isn't harmful for those with liver conditions like hepatitis or fatty liver disease, it is advisable to consult a doctor to determine an appropriate caffeine intake.
Beyond moderate coffee consumption, other liver protection measures should be combined: vaccination against hepatitis A and B, limiting alcohol, reducing high-sugar and saturated fat foods, regular exercise, and increasing intake of oats, garlic, berries, grapes, and grapefruit. Regular health check-ups and discussions with a doctor before lifestyle changes also contribute to long-term liver protection.
By Bao Bao (Source: Very Well Health, Health Shots)
