---
title: "Fatty liver disease: Symptoms & Treatment | HealthAnswers"
description: "Non-alcohol related fatty liver disease (NAFLD) — causes, links to obesity and diabetes, diagnosis, and preventing progression to cirrhosis."
url: https://healthanswers.co.uk/conditions/fatty-liver-disease/
robots: noindex
---

# Fatty liver disease: Symptoms & Treatment | HealthAnswers

Health A–Z

Non-alcohol related fatty liver disease (NAFLD) — causes, links to obesity and diabetes, diagnosis, and preventing progression to cirrhosis.

Written by HealthAnswers editorial team Medically reviewed by [HealthAnswers UK doctor review panel](https://healthanswers.co.uk/our-doctors/) Reviewed 3 July 2026

## Quick answer

What is fatty liver disease? Fatty liver disease means excess fat stored in liver cells — usually linked to obesity, type 2 diabetes, and metabolic syndrome rather than alcohol. Most people have no symptoms — found on blood tests or scans. Weight loss of 5 to 10% is the main treatment. A small proportion progresses to inflammation (NASH) and cirrhosis. See a GP if liver blood tests are abnormal — exclude alcohol and other causes.

General UK health information, not a diagnosis. In an emergency call 999 ; for urgent advice use [NHS 111](https://111.nhs.uk/) (GP out-of-hours in Northern Ireland).

On this page 8 sections

## Key facts about fatty liver disease

- NAFLD affects up to 1 in 3 adults in the UK — often with obesity and type 2 diabetes.
- Most have simple steatosis (fat only) — benign; NASH (inflammation) can scar the liver.
- Weight loss, exercise, and controlling diabetes reduce liver fat — no specific licensed pill for all NAFLD yet.
- Alcohol can coexist — even moderate drinking worsens fatty liver; be honest with GP.
- Advanced cirrhosis causes jaundice, ascites, and liver failure — preventable with early lifestyle change.

## Fatty liver disease — NAFLD explained

**Non-alcohol related fatty liver disease (NAFLD)** — now often termed **MASLD (metabolic dysfunction-associated steatotic liver disease)** in updated nomenclature — is **excess fat in liver cells** not primarily caused by alcohol.

It affects an estimated **20 to 30% of UK adults** — parallel to **obesity** and **[type 2 diabetes](https://healthanswers.co.uk/conditions/type-2-diabetes/)** epidemics. Most people **never know** they have it until **blood tests** or **ultrasound** for other reasons.

## Spectrum of disease

| Stage | Name | Risk |
| --- | --- | --- |
| Simple steatosis | Fat only | Low — liver function often normal |
| NASH | Steatohepatitis — inflammation | Moderate — can scar |
| Fibrosis | Scarring | Progressive |
| Cirrhosis | End-stage scarring | Liver failure, cancer risk |

**Not everyone progresses** — majority remain stable with simple fat.

## Causes and risk factors

- obesity — especially abdominal fat

- type 2 diabetes and [prediabetes](https://healthanswers.co.uk/conditions/prediabetes/)

- [insulin](https://healthanswers.co.uk/treatments/insulin/) resistance

- [high cholesterol](https://healthanswers.co.uk/conditions/high-cholesterol/)/triglycerides

- metabolic syndrome

- [polycystic ovary syndrome](https://healthanswers.co.uk/conditions/polycystic-ovary-syndrome/)

- ** obstructive [sleep apnoea](https://healthanswers.co.uk/conditions/sleep-apnoea/)**

- rapid weight loss — paradoxically can worsen NASH transiently

- genetics — PNPLA3 variant common

**Alcohol:** any intake adds injury — **honest alcohol history** essential — **dual pathology** common.

## Symptoms

**Early:** **asymptomatic**

**Later (cirrhosis):**

- fatigue

- right upper abdominal discomfort

- [jaundice](https://healthanswers.co.uk/symptoms/jaundice/) — yellow skin/eyes

- [itchy skin](https://healthanswers.co.uk/symptoms/itchy-skin/)

- ascites — fluid belly

- leg swelling

- easy bruising

- confusion — encephalopathy

## Diagnosis

GP pathway:

- Abnormal [LFTs](https://healthanswers.co.uk/tests/liver-function-test/) — raised ALT/AST (ALT often higher)

- Exclude other causes: alcohol-related liver disease — AUDIT questionnaire

- [hepatitis](https://healthanswers.co.uk/conditions/hepatitis/) B and C

- autoimmune hepatitis

- haemochromatosis — [ferritin](https://healthanswers.co.uk/tests/iron-blood-test/), transferrin saturation

- [coeliac disease](https://healthanswers.co.uk/conditions/coeliac-disease/) — if indicated

- [Ultrasound](https://healthanswers.co.uk/tests/ultrasound-scan/) — bright liver, excludes focal lesions

- Fibrosis assessment — Fib-4 calculation, FibroScan in secondary care

## Treatment — no magic pill (yet)

### Weight loss — cornerstone

**7 to 10% body weight loss:**

- reduces liver fat

- improves NASH histology in trials

- see [weight loss guide](https://healthanswers.co.uk/conditions/weight-loss-and-obesity/)

### Exercise

**150 to 200 minutes weekly** — improves enzymes **independent of weight loss**

### Metabolic control

- HbA1c targets in diabetes

- statins — safe in NAFLD — reduce CV risk

- blood pressure control

### Medicines

- vitamin E — selected non-diabetic NASH — specialist

- pioglitazone — insulin sensitiser — specialist

- GLP-1 agonists — emerging evidence for liver fat reduction in obesity/diabetes

- no universal NHS pill for all NAFLD yet

### Alcohol

** abstinence or minimal** — even moderate alcohol accelerates harm in fatty liver

## Monitoring

**Regular LFTs** — track trend **Fibrosis reassessment** if risk factors persist **Screen for cardiovascular disease** — main cause of death in NAFLD patients

## When to worry

**Urgent referral:**

- jaundice

- ascites

- variceal bleed

- platelets falling , albumin low — synthetic function failing

Fatty liver is **reversible early** — **weight and metabolic health** are treatment; ignoring abnormal LFTs risks **preventable cirrhosis**.

## ! When to see a GP about fatty liver disease

See a GP if blood tests show raised ALT or AST, or ultrasound reports fatty liver. Assessment excludes alcohol-related liver disease, hepatitis B/C, autoimmune liver disease, and haemochromatosis. Urgent referral if jaundice, ascites (swollen abdomen), vomiting blood, or severe fatigue with weight loss — possible advanced liver disease.

## Common questions about fatty liver disease

What causes a fatty liver? Excess calories stored as fat in liver cells — strongly linked to obesity, insulin resistance, type 2 diabetes, high cholesterol, and metabolic syndrome. Less commonly rapid weight loss, certain medicines, or genetic factors. Alcohol-related fatty liver is separate diagnosis — alcohol intake must be assessed honestly. Can fatty liver be reversed? Yes — weight loss of 5 to 10% body weight reduces liver fat and inflammation in most people. Exercise improves liver enzymes even without major weight loss. Controlling diabetes and cholesterol helps. Simple fatty liver often fully reverses; scarring (fibrosis) may be partially reversible early. What are the symptoms of fatty liver disease? Usually none — discovered on routine blood tests (raised ALT) or ultrasound. Advanced disease — tiredness, discomfort upper right abdomen, jaundice, itchy skin, swollen legs or abdomen — signs of cirrhosis. Most never reach this stage with lifestyle intervention. Is fatty liver dangerous? Simple steatosis is low short-term risk. NASH with inflammation and fibrosis can progress to cirrhosis, liver failure, and liver cancer over years — similar pathways to alcohol cirrhosis. Cardiovascular disease risk is also elevated — manage heart risk factors. What should I eat for fatty liver? Mediterranean-style diet — vegetables, whole grains, olive oil, fish; limit sugary drinks, refined carbs, and processed food. No specific miracle food — calorie deficit if overweight matters most. Coffee may have modest protective association in studies — not a treatment alone. Do I need a liver biopsy? Not routinely — non-invasive scores (Fib-4, ELF test, FibroScan) estimate fibrosis in many cases. Biopsy reserved for uncertain diagnosis or research — specialist decision.

## Sources

- [NHS — Non-alcoholic fatty liver disease](https://www.nhs.uk/conditions/non-alcoholic-fatty-liver-disease/)
- [NICE — NAFLD assessment](https://www.nice.org.uk/guidance/ng49)

## How we reviewed this page

Medically reviewed by the [HealthAnswers UK doctor review panel](https://healthanswers.co.uk/our-doctors/)

First published 14 June 2026 Medically reviewed 3 July 2026 Next review due 3 July 2029 or sooner if NHS or NICE guidance changes

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