What does it mean when bilirubin levels are elevated?

Elevated bilirubin levels may be caused by various factors: 1. Physiological factors: Newborns may experience elevated physiological bilirubin levels during the first week after birth, which typically gradually subsides after one week. After normal food intake, direct bilirubin levels may temporarily rise but subsequently return to normal on their own. 2. Liver diseases: Conditions such as hepatitis and cirrhosis can damage liver cells, affecting bilirubin metabolism and excretion. 3. Biliary tract diseases: Such as biliary obstruction, cholangitis, and gallstones, which hinder the normal flow of bile, leading to bilirubin accumulation in the body. 4. Hemolytic diseases: Such as blood transfusion mismatches, drug intoxication, or poisoning, which cause extensive destruction of red blood cells and release of hemoglobin into the bloodstream, exceeding the liver's metabolic capacity and the body's excretion ability. When bilirubin levels exceed the normal range, it is recommended to seek timely medical attention for detailed examination and diagnosis to determine the specific cause and implement appropriate treatment measures.