Your Liver Is Sending a Signal
Routine blood work reveals your liver enzymes are elevated. Your doctor mentions it casually, perhaps suggesting you reduce alcohol. But elevated liver values deserve more than a passing comment – they can signal conditions ranging from fatty liver disease to hepatitis, and early detection makes all the difference.
At our practice in Zürich Seefeld, I investigate elevated liver values thoroughly because the liver is a metabolic powerhouse whose function affects every aspect of your health.
Understanding Liver Enzymes
ALT (Alanine Aminotransferase): The most specific liver enzyme. Elevation primarily indicates liver cell damage (hepatocellular injury). It is the most useful marker for non-alcoholic fatty liver disease (NAFLD).
AST (Aspartate Aminotransferase): Less liver-specific – also found in heart, muscle, and kidney. When both ALT and AST are elevated with ALT higher than AST, liver disease is likely. When AST exceeds ALT, consider alcoholic liver disease, cirrhosis, or muscle damage.
GGT (Gamma-Glutamyl Transferase): Sensitive to alcohol use and bile duct problems. Elevated GGT with elevated alkaline phosphatase suggests biliary rather than hepatocellular disease.
Alkaline Phosphatase (ALP): Elevated in bile duct obstruction, bone disease, and some liver conditions.
Bilirubin: The breakdown product of haemoglobin, processed by the liver. Elevation causes jaundice and indicates liver dysfunction or increased red blood cell breakdown.
Common Causes of Elevated Liver Enzymes
Non-Alcoholic Fatty Liver Disease (NAFLD): The most common cause of elevated ALT in developed countries. Driven by insulin resistance, obesity, and metabolic syndrome. Affects an estimated 25-30% of adults. Can progress to NASH (non-alcoholic steatohepatitis), fibrosis, and cirrhosis.
Alcohol: Regular excessive alcohol consumption causes alcoholic fatty liver, hepatitis, and ultimately cirrhosis.
Medications: Statins, paracetamol, NSAIDs, antibiotics, antifungals, and many other medications can elevate liver enzymes.
Viral hepatitis: Hepatitis B and C can cause chronic liver inflammation and should always be excluded.
Autoimmune hepatitis: The immune system attacks liver cells. More common in women and often associated with other autoimmune conditions.
Haemochromatosis: Iron overload that damages the liver. Relatively common genetic condition that is easily treatable if caught early.
Thyroid dysfunction: Both hypo- and hyperthyroidism can affect liver enzyme levels.
Our Diagnostic Approach
I assess the pattern of enzyme elevation, check hepatitis B and C serology, iron studies (ferritin and transferrin saturation for haemochromatosis), autoimmune markers (ANA, smooth muscle antibodies), thyroid function, metabolic markers, and sometimes request liver ultrasound. Non-invasive fibrosis assessment (FIB-4 score, elastography) evaluates whether liver scarring has occurred.
What We Do: Protecting Your Liver
Treat fatty liver disease: Weight loss of 7-10% can reverse NAFLD. Dietary changes (reducing sugar and refined carbohydrates), exercise, and addressing insulin resistance are the cornerstone.
Medication review: Identifying and adjusting hepatotoxic medications where possible.
Treat underlying conditions: Hepatitis, autoimmune liver disease, haemochromatosis – each has specific treatment.
Liver-supportive nutrition: Adequate protein, coffee (protective for the liver), cruciferous vegetables, and avoidance of excessive fructose and alcohol.
Monitor and follow up: Serial enzyme testing to track improvement and ensure conditions are not progressing.
Conclusion
Elevated liver values are not something to dismiss or monitor passively. Early investigation and intervention can prevent progression to serious liver disease. If your liver enzymes are elevated, book a thorough evaluation at our practice in Zürich Seefeld.
