07/06/2025
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The calories you drink daily can have a big impact on your liver health, often in ways people don’t realize. Sweetened beverages are one of the sneakiest sources of extra sugar in modern diets, and they directly contribute to fat building up in the liver through several processes.
When you drink sugary drinks, your liver has to process a lot of fructose—a type of sugar that’s especially harmful in large amounts. Unlike glucose, which your whole body can use, fructose is mainly processed by the liver. When your liver gets overwhelmed with fructose, it turns much of it into fat through a process called de novo lipogenesis. This fat can then stay in your liver or circulate in your blood as triglycerides.
For example, a 12-ounce soda usually contains about 10 teaspoons of added sugar, often from high-fructose corn syrup. Other drinks like energy drinks, sweetened teas, flavored coffees, and fruit juices with added sugars have similar amounts. Even drinks marketed as “healthy” sometimes have more sugar than candy bars.
Drinking these sugary beverages every day puts constant pressure on your liver to process sugar, increasing fat production and storage in liver cells. Research shows that having just one sugary drink a day raises the risk of developing non-alcoholic fatty liver disease—even for people who aren’t overweight.
It’s not just added sugars that can be harmful. Some studies suggest artificial sweeteners might also affect metabolism and promote fatty liver by changing gut bacteria and insulin response, but more research is needed.
