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Insight Horizon Media

Can fatty liver cause high direct bilirubin?

Author

Rachel Hickman

Published Mar 07, 2026

Can fatty liver cause high direct bilirubin?

Elevated serum bilirubin levels are inversely associated with nonalcoholic fatty liver disease.

What causes high direct and indirect bilirubin?

An increase in direct bilirubin is most likely caused by a blockage in the liver. An increase in indirect bilirubin is most likely caused by destruction of too many red blood cells.

What liver disease causes high bilirubin?

Dubin-Johnson syndrome is a rare genetic liver disorder characterized by elevated levels of bilirubin in blood (hyperbilirubinemia). Persistent yellowing of the skin, mucous membranes and whites of the eyes (jaundice) is usually the only symptom in most cases. Dubin-Johnson syndrome is usually diagnosed after puberty.

When should I worry about ALT?

A high ALT level is usually a sign of some type of liver issue. It’s important to work with your doctor to find the underlying cause of your elevated ALT, even if you don’t have any symptoms. Lowering your ALT will require treating the cause, but certain dietary changes can help.

What is a critical ALT level?

Greater than 50 µg/mL. Alanine Aminotransferase (ALT) Greater than 1000 U/L. Aspartate Aminotransferase (AST) Greater than 1000 U/L.

What does direct and indirect bilirubin mean?

Some bilirubin is bound to a certain protein (albumin) in the blood. This type of bilirubin is called unconjugated, or indirect, bilirubin. In the liver, bilirubin is changed into a form that your body can get rid of. This is called conjugated bilirubin or direct bilirubin.

How is high indirect bilirubin treated?

No treatment is needed for physiologic jaundice. For breast milk jaundice and other types of nonphysiologic jaundice, phototherapy can be used. Phototherapy, which consists of exposing the infant’s skin to light, is a safe and efficient method to reduce the toxicity of bilirubin and to increase its elimination.

When should I worry about Alt?