A new review of decades of research suggests that drinking coffee may help protect the liver from disease. The study examined data from multiple published papers to understand the link between coffee consumption and liver health.
Researchers found that coffee drinkers tend to have lower levels of liver enzymes that indicate cell damage, including ALT, AST, and GGT. The review also showed a reduced risk of fibrosis and cirrhosis, even in people who already have liver disease. Coffee drinkers were found to have up to a 40% lower risk of developing hepatocellular carcinoma, the most common form of liver cancer. The findings also pointed to healthier gut bacteria and lower inflammation among coffee consumers. Additionally, the study reported a 29% lower risk of metabolic dysfunction-associated steatotic liver disease, or MASLD, which is the most common chronic liver condition.
MASLD affects about one in three adults worldwide. It is more common than type 2 diabetes. If left untreated, the condition can progress to cirrhosis and liver cancer. The protective effects of coffee appeared to be dose-dependent, meaning that drinking more coffee was linked to greater protection. The strongest benefits were seen in people who drank three or more cups per day, which is about 24 ounces.
The review credited coffee’s bioactive ingredients for these effects. Caffeine may help activate the body’s own antioxidant defenses. Chlorogenic acids, a group of polyphenols, support liver health by helping regulate glucose and fat metabolism, reducing oxidative stress, and protecting the liver from damage. Diterpenes, another compound in coffee, may help stimulate the body’s natural detoxification processes.
How coffee is brewed can affect its health benefits. Choosing whole, organic Arabica beans and grinding them fresh helps preserve flavor and antioxidants. Coffee beans can contain mold, so brands that test for mold, mycotoxins, and heavy metals may offer a purer product. Longer brewing methods, such as cold brew or French press, tend to extract higher levels of antioxidants. Espresso and pour-over methods are also good options. Adding too much sugar, milk, or creamer can reduce coffee’s beneficial effects. Adding protein powder or collagen instead can make the drink more balanced.
The research consistently shows that moderate coffee consumption supports overall health. Drinking around three cups per day may benefit not only the liver but also heart, metabolic, and gut health.
