What it is
Metabolic dysfunction-associated fatty liver (formerly called non-alcoholic fatty liver) affects roughly one in four adults. It goes hand in hand with being overweight, type 2 diabetes and insulin resistance, and in some cases it progresses to inflammation, fibrosis and cirrhosis.
What improves it is well established: losing weight (5% already lowers liver fat; 7–10% improves inflammation; above 10% fibrosis can regress), a Mediterranean diet, exercise and not drinking alcohol. 'Detox' products have no evidence: the liver cleans itself. What it needs is to stop being overloaded.
What causes it and what reverses it
The reality, without the marketing:
- CAUSE: insulin resistance, excess calories, sugars and ultra-processed food, inactivity; alcohol makes it worse.
- IMPROVES WITH: sustained weight loss, a Mediterranean diet and exercise (which improves liver fat even without much weight loss).
- DOES NOT IMPROVE WITH: 'detox' teas, cleanses or miracle supplements.
- SPECIFIC TREATMENTS: some medicines (and vitamin E in particular cases) are decided by the specialist, not at the counter.
At the counter
When to recommend it
- Tell the truth: 'no supplement cures fatty liver; what works is weight, diet and exercise'
- Support the change: realistic goals (0.5–1 kg a week) and a Mediterranean diet
- Avoid alcohol, added sugars and ultra-processed food
- Remind them of medical follow-up: fatty liver can progress silently
When not to
- Do not sell a 'detox' as a solution
- Do not suggest that a supplement makes up for not changing habits
Warnings
- Important 'DETOX' MARKETING: it sells well, but there is no evidence that it cleans the liver. The liver cleans itself once it stops being overloaded.
- Important EXPECTATIONS: improvement needs months of sustained change, not a tea or a month of supplements.
- Caution SUPPLEMENTS: silymarin, choline or omega-3 have limited evidence in fatty liver. They can accompany, not treat.
- Caution ALCOHOL: it adds calories and liver damage. It is not compatible with recovery.
- Worth knowing PROGRESSION: fatty liver → inflammation → fibrosis → cirrhosis, often without symptoms. That is why medical follow-up matters.
Pharmacokinetics
- Absorption
- The plant extracts sold for the liver are absorbed variably, with poorly proven effects.
- Distribution
- Exercise and weight loss mobilise the fat stored in the liver.
- Metabolism
- When less energy comes in than is spent, the liver uses the fat it has stored.
- Elimination
- Improvement is measured in blood tests and scans over months.
Fatty liver: what works and what doesn't
| Aspect | What works | What doesn't |
|---|---|---|
| Weight | Losing 5–10% improves fat and inflammation | Expecting a product to do it alone |
| Diet | Mediterranean, low in sugars and ultra-processed food | 'Detox' or juice diets |
| Exercise | It improves the liver even without much weight loss | Inactivity |
| Supplements | At most, they accompany | Selling them as treatment |
| Alcohol | Avoid it | 'Only at weekends' |
| Result | Measurable improvement over months | Silent progression |
Changing habits is the treatment. Supplements without changing habits are money wasted.
Self-assessment
Three questions. When you check your answers you will see the explanation for each one.
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A 5% weight loss already lowers liver fat, and 7–10% improves inflammation. Without changes in habits, no product solves it.
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There is no evidence that any 'detox' treats fatty liver. What works is weight, diet and exercise.
-
Improvement is measured in blood tests and imaging over months, with the changes sustained.
Training content. It does not replace the summary of product characteristics or clinical judgement.