“ Causes
Liver disease has many causes.
Infection
Parasites and viruses can infect the liver, causing inflammation that reduces liver function. The viruses that cause liver damage can be spread through blood or semen, contaminated food or water, or close contact with a person who is infected. The most common types of liver infection are hepatitis viruses, including:
Hepatitis A
Hepatitis B
Hepatitis C
Immune system abnormality
Diseases in which your immune system attacks certain parts of your body (autoimmune) can affect your liver. Examples of autoimmune liver diseases include:
Autoimmune hepatitis
Primary biliary cholangitis
Primary sclerosing cholangitis
Genetics
An abnormal gene inherited from one or both of your parents can cause various substances to build up in your liver, resulting in liver damage. Genetic liver diseases include:
Hemochromatosis
Wilson's disease
Alpha-1 antitrypsin deficiency
Cancer and other growths
Examples include:
Liver cancer
Bile duct cancer
Liver adenoma
Other
Additional, common causes of liver disease include:
Chronic alcohol abuse
Fat accumulation in the liver (nonalcoholic fatty liver disease)
Certain prescription or over-the-counter medications
Certain herbal compounds
Risk factors
Factors that may increase your risk of liver disease include:
Heavy alcohol use
Obesity
Type 2 diabetes
Tattoos or body piercings
Injecting drugs using shared needles
Blood transfusion before 1992
Exposure to other people's blood and body fluids
Unprotected sex
Exposure to certain chemicals or toxins
Family history of liver disease”
From the Mayo Clinic
“Symptoms:
Liver disease doesn't always cause noticeable signs and symptoms. If signs and symptoms of liver disease do occur, the may include:
Skin and eyes that appear yellowish (jaundice)
Abdominal pain and swelling
Swelling in the legs and ankles
Itchy skin
Dark urine color
Pale stool color
Chronic fatigue
Nausea or vomiting
Loss of appetite
Tendency to bruise easily”
https://www.mayoclinic.org/diseases-conditions/liver-problems/symptoms-causes/syc-20374502
I believe you mean your ALT value. Why are you testing your liver enzymes?
Usually they will run a liver panel which checks ALT AST and several other enzymes. However that will only show if something is currently injuring your liver like a current liver infection live hepatitis.
Liver enzymes do not reflect how much liver damage you may have.
For me when I had hep c my liver enzymes were slightly elevated for decades. In that time I eventually progressed to liver cirrhosis. However, now that my hep c is cured my liver enzymes are normal but I still have extensive liver damage liver cirrhosis. But nothing is currently injuring my liver.
Why are you having your liver enzymes tested? Do you suspect a hepatitis infection?