When animals' livers process fructose, it can drain energy levels and build up a byproduct that might mess with how the liver works.

When animals eat fructose, their liver breaks it down super fast without needing insulin, turning it mostly into glucose and lactate — and this might mess with the liver's energy and lead to health problems if it happens too much.

When animals eat a lot of sugar like fructose, especially along with high blood sugar, their liver makes more of a substance called lactate. This could sometimes build up and cause a problem called lactate acidosis, especially in people with diabetes or liver issues.

When your liver processes fructose (a sugar found in fruit and soda), it burns through energy really fast, makes a waste product called uric acid, and this can damage the liver’s power plants and cause fat to build up—even if your insulin levels are normal.

Eating a lot of fructose (like in sugary drinks) might turn up the activity of certain liver enzymes that process sugar and make fat, especially in people who already have metabolic problems like obesity or diabetes.

Eating too much fructose—like the sugar in soda and candy—can slow down your liver’s ability to burn fat, making fat build up and mess up your metabolism.