There's no single "normal" level of fat in the liver. A healthy liver contains some fat, but the amount varies. Different sources define "fatty liver" based on different thresholds:
- Over 5% Liver Fat: Some sources indicate that fat buildup becomes a problem when it exceeds 5% of the liver's weight. [Source: Cleveland Clinic]
- Over 10% Liver Fat: Other sources state that fatty liver disease is diagnosed when fat makes up more than 10% of the liver's weight. [Source: Better Health Channel, other sources]
Therefore, a "normal" level would be less than 5% to less than 10%, depending on the source. It's crucial to remember that these percentages are based on liver biopsy, a relatively invasive procedure. More commonly, fatty liver is suspected through blood tests showing elevated liver enzymes (like ALT and AST), although normal enzyme levels don't rule out fatty liver disease. [Source: AAFP, Jefferson Health] Up to 80% of patients with normal liver enzymes may still have the disease. [Source: Jefferson Health, BMJ]
It's important to consult with a healthcare professional for proper diagnosis and assessment. They will consider several factors beyond just liver fat percentage, including blood tests, imaging scans, and your overall health.
