How do I know if I have this, and why does it happen?
Here is the uncomfortable truth about fatty liver disease: in most people it produces no symptoms at all — for years, often decades. It is discovered accidentally, on routine bloodwork or an ultrasound ordered for something else. When symptoms finally appear, the disease is usually advanced. That is why this chapter is less about recognizing feelings and more about recognizing the signals in your labs and metabolic profile that warrant a look.
The most common presentation: mildly elevated ALT/AST on routine bloodwork, often the only clue for years.
CommonNon-specific tiredness, easily blamed on stress or sleep — the liver itself has no pain nerves.
CommonA dull ache or pressure under the right ribs as an enlarging liver stretches its capsule.
CommonElevated triglycerides, low HDL, rising glucose and waistline — the cluster fatty liver travels with.
CommonWhen fatty liver progresses to cirrhosis, the signs are unmistakable — jaundice (yellow eyes and skin), abdominal swelling (fluid accumulation called ascites), easy bruising (the liver makes clotting factors), spider-like blood vessels on the chest, and confusion (the failing liver can no longer filter the blood of toxins). These are late-stage events, and they are why screening matters: the disease is silent exactly while it is most treatable.
Who should be looking? The screening logic follows the metabolic cluster: elevated liver enzymes, type 2 diabetes or prediabetes, obesity (especially the abdominal pattern), high triglycerides with low HDL, and a family history of liver disease. Notably, a dark, velvety skin patch at the neck or armpits (acanthosis nigricans) is a visible marker of the underlying insulin resistance. If several of these apply to you, a liver conversation with your physician — including the inexpensive FIB-4 calculation — is the evidence-appropriate next step, not a wait for symptoms.
Select a trigger
Fatty liver risk factors cluster into four families. Identifying yours tells you how hard to look:
These signs suggest cirrhosis with decompensation. Seek immediate emergency medical care if you experience: