NAFLD is excess fat build-up in the liver that is not caused by alcohol.
What NAFLD is
NAFLD, or non-alcoholic fatty liver disease, happens when fat accumulates in liver cells in people who do not drink much alcohol. It is now also called MASLD in newer medical terminology. The condition is closely linked to insulin resistance, excess weight, and other metabolic problems. The liver plays an important role in processing sugar and fat, so when this process is disrupted, fat can build up beyond healthy levels.
Why it is linked to PCOS
Because insulin resistance is common in PCOS, some women with the condition carry a higher fatty-liver risk than other people. The same metabolic factors that contribute to cycle problems and androgen signs can also affect liver health. For that reason, doctors sometimes check liver enzymes or assess metabolic health as part of an overall review in some women with PCOS. However, NAFLD is not part of the criteria used to diagnose PCOS itself.
How it is detected
In its early stages NAFLD often causes no clear symptoms, so it is frequently found by chance during a routine check or testing for another reason. It is usually detected through liver-enzyme blood tests or a liver ultrasound, and in some cases a doctor may suggest further tests. A single test result does not tell the whole story, and liver enzymes can change for many reasons. For that reason, results should be interpreted by a doctor in the context of your overall health, including weight, blood-sugar levels, and other factors, not from a single number.
What it means for you
If you have PCOS symptoms or metabolic signs, a doctor can advise whether liver checks are appropriate for you. The encouraging part is that in early stages liver health can often improve, and the approach frequently overlaps with managing PCOS as a whole, such as attention to nutrition and physical activity. This glossary does not provide a treatment plan, however, because each person’s needs differ. Any decisions about testing, monitoring, or next steps should be discussed with a doctor who reviews your personal situation, rather than from online worry alone. See also what is PCOS for broader context on the metabolic side of the condition.
This glossary is education, not diagnosis. For your own situation, ask a doctor or pharmacist.