It usually turns up by accident — a slightly raised liver enzyme on a routine blood test, or a scan done for something else. You are told it is common and probably nothing. Both of those are true, and neither is the whole answer, because it becomes considerably more common after menopause and it is one of the few things on this site that can actually be reversed.

Where we stand: Menova is an independent publication. We sell no supplements, tests or programmes, we are not your doctor, and this is general education, not a diagnosis.

What it is, and what it is now called

Fat accumulating in liver cells beyond a small amount. It has had several names, which is why the letters look different depending on when your result was written: non-alcoholic fatty liver disease (NAFLD) is the older term, and metabolic dysfunction-associated steatotic liver disease (MASLD) is the newer one. If your notes say either, they are describing the same territory.

It is among the most common liver conditions in many countries, and most people who have it do not know.

Why it rises after menopause

The honest position: the association is well described and the mechanism is not fully settled.

What is reasonably clear is that estrogen appears to have a protective role in how the body handles fat, and that the transition brings changes — in where fat is stored, in insulin sensitivity, in lipids — that all push in the same direction. Prevalence in women rises around and after menopause towards, and in some studies past, the rate in men of the same age.

So it is not that menopause "causes" it. It is that this decade removes some protection while adding several risk factors at once — see insulin resistance in menopause, menopause and belly fat and cholesterol after menopause.

Why you probably will not notice it

There are usually no symptoms at all. When there are, they are vague — fatigue, and sometimes a dull ache under the right ribs — and in midlife those get attributed to the transition, which is exactly the problem.

Two things worth knowing, because both are commonly misunderstood:

Normal liver enzymes do not exclude it. A large share of people with fatty liver have entirely normal blood tests. "Your liver bloods are fine" is not the same as "your liver is fine".

Being slim does not exclude it. Lean fatty liver is well recognised, and it is more often missed precisely because nobody suspects it.

The question that actually matters

Not "do I have fat in my liver" — many people do. The question is whether there is scarring, because that is what determines whether this matters for your health.

Most people with fatty liver never progress. A minority develop inflammation and then fibrosis, and that is the group worth identifying.

There is a simple way to start. A widely used score called FIB-4 is calculated from your age and three routine blood results — ALT, AST and platelets. It requires no new test if you have had bloods recently. It is a screening step, not a diagnosis: a low score is reassuring, and a raised one is a reason to look further, often with a non-invasive scan that measures liver stiffness.

This is the thing to ask for, because it converts "probably nothing" into an actual answer.

What genuinely changes it

This is unusually actionable, which is why it is worth taking seriously rather than filing away.

Weight, if it applies. Modest loss has a meaningful effect on liver fat — much smaller than the amount most people assume is required. See losing weight in midlife.

Exercise, independently of weight. Both resistance training and aerobic exercise reduce liver fat even when weight does not change. This matters because "I exercise but the scale hasn't moved" is not a reason to stop — see strength training in menopause and walking and hiking in midlife.

Alcohol. Even though the older name said "non-alcoholic", alcohol on top of a fatty liver is additive rather than irrelevant — see alcohol in midlife and stopping drinking in midlife.

Treating what sits underneath it — raised blood sugar, blood pressure, lipids. See menopause and diabetes and blood pressure and menopause.

Sugary drinks specifically, which are more strongly associated with liver fat than diet as a whole.

Protein and muscle. Muscle is where a great deal of glucose disposal happens, and it declines in this decade — see how much protein you need and muscle loss in midlife.

What does not

No supplement is established as a treatment for it. Milk thistle, "liver detox" formulations and similar are sold heavily into exactly this gap — see why "detox" claims do not hold and what the supplement research says.

Very rapid weight loss is not the shortcut it appears to be, and crash approaches can be counterproductive.

Does it affect hormone therapy?

Usually not, and this is worth saying because women sometimes stop or avoid treatment unnecessarily.

Active liver disease is a standard contraindication, but simple fatty liver without significant impairment is not the same thing. Route matters here as it does throughout: oral estrogen passes through the liver and affects protein synthesis in a way transdermal largely does not, which is a reasonable thing to raise if your liver has been flagged.

Discuss it rather than deciding alone — see gallbladder, liver and HRT and HRT types and forms.

What to ask

"My liver enzymes were slightly raised and I was told not to worry. Could we work out my FIB-4 score from my bloods, and check whether I need a fibrosis assessment? And could we look at HbA1c, lipids and blood pressure at the same time?"

That asks for the specific step that separates "common and harmless" from "worth following", and bundles it with the other midlife numbers so it is one appointment rather than four.

Our free printable blood test sheet has space for lipids and liver results alongside the rest, and the free visit prep sheet keeps it to one page. The free 2-minute Menova self-check organizes your symptom picture — no account, not a diagnosis, and your answers never leave your device.

The proportion to keep

Common, usually harmless, frequently reversible — and worth one conversation rather than either panic or dismissal. The specific thing to walk away with is whether you have been assessed for scarring, because everything else follows from that answer.

This article is general education, not medical advice or a diagnosis. Do not start or stop any medication, supplement or hormone therapy based on this page. Persistent abdominal pain, yellowing of the skin or eyes, dark urine or vomiting blood requires prompt assessment by a licensed clinician.

Sources: NIDDK — NAFLD & NASH, NICE NG49 — Non-Alcoholic Fatty Liver Disease, NICE NG23 — Menopause, and NHS — Non-Alcoholic Fatty Liver Disease.