The liver rarely makes itself noticed, yet it does remarkable work: it processes nutrients, converts fats and handles almost everything we eat and drink. What research says about its everyday needs is surprisingly concrete, from alcohol-free days to brisk walking and coffee to a nutrient hardly anyone thinks about.
Why the liver is becoming a bigger topic in Switzerland
The Swiss figures are clear. A model published in Swiss Medical Weekly (modelling study) estimates that by 2030 around 2.2 million people in Switzerland could have non-alcoholic fatty liver, roughly one in four. Fatty liver (now usually called MASLD, formerly NAFLD) describes a liver that stores more fat than is healthy. An analysis of national hospital data (observational study) also shows that hospital admissions for liver cirrhosis more than doubled between 1998 and 2020, from 1,631 to 4,052. In 2020 the leading causes were alcohol-related liver disease (47.9%) and, once other causes were excluded, fatty liver (42.7%). The authors describe both as largely preventable.
That makes everyday life the most important setting. Five areas are well studied.
Alcohol: breaks are the simplest step
The Swiss Federal Commission for Alcohol-Related Issues recommends that healthy adults drink no more than one standard drink a day (women) or two (men), with at least two alcohol-free days a week. A Swedish cohort study of more than 15,000 people with MASLD shows why this matters for fatty liver too: about 17% received an additional alcohol-related diagnosis at some point in life, and in this group serious liver events such as cirrhosis or liver cancer occurred about three times as often. Experts therefore advise raising alcohol consumption openly from the start when fatty liver is diagnosed. With existing liver disease, during pregnancy and with medicines that burden the liver, stricter rules apply and should be clarified with a doctor.
Exercise and diet: what studies observe for liver fat
A meta-analysis of randomised trials (14 studies, 551 participants with fatty liver) found that aerobic and resistance training led much more often to a clinically meaningful reduction in MRI-measured liver fat than usual care (odds ratio 3.5). Such a response appeared only at an amount equivalent to about 150 minutes of brisk walking per week, regardless of whether participants lost much weight. Smaller amounts did not lead to the same result in this analysis. That fits a simple everyday rule: better regularly and a little brisker than occasionally and very gently.
For diet, the picture is less clear-cut than headlines suggest. In a randomised trial of 250 overweight adults with fatty liver, a Mediterranean and a low-fat diet produced similar results for liver fat and liver stiffness over twelve weeks. The authors attribute this to the weight loss achieved. What seems to matter is therefore less the label of the diet than an overall balanced way of eating that can be kept up.
Coffee: the surprisingly well-studied everyday companion
Few foods have been studied as often in relation to the liver as coffee. A meta-analysis of observational studies found that two additional cups a day were associated with roughly half the risk of cirrhosis (relative risk 0.56); for alcohol-related cirrhosis the figure was 0.62. Such studies describe associations; results varied between individual studies. Caffeine is also not tolerated equally well by everyone, and special recommendations apply during pregnancy.
Choline: the nutrient hardly anyone thinks about
Choline is an essential nutrient that, among other things, is involved in methyl group transfer and in building cell membranes. The liver is a central site of its metabolism. In a controlled depletion study in humans, on a choline-free diet 77% of men and 80% of postmenopausal women developed signs of fatty liver or muscle damage, compared with 44% of premenopausal women. Six men showed these signs even at an intake that matched the recommendation at the time.
The European Food Safety Authority (EFSA) sets an adequate intake for adults at 400 mg per day. Choline is found in eggs, meat, fish, whole grains, vegetables and fruit. A cross-sectional study in people with fatty liver (observational study) found a link between very low choline intake and more scarring of liver tissue in postmenopausal women, but not in children, men or premenopausal women. How much additional choline makes sense varies from person to person and has not been conclusively settled. In practice: anyone who eats mainly plant-based food or rarely eats eggs, fish and meat can take a conscious look at their intake.
Milk thistle, artichoke and dandelion: what studies observe and where they reach their limits
Bitter plants have belonged to European plant lore for centuries, dandelion root as much as milk thistle and artichoke. Research has examined them with varying thoroughness. The usual outcome measures are the liver values ALT and AST, enzymes in the blood that rise when liver cells are under strain. They are an indicator, not a health outcome in themselves.
| Plant | Traditional background | Evidence in humans | Notes on use |
|---|---|---|---|
| Milk thistle (fruit) | Long tradition in Central Europe; contains silymarin as its characteristic compound complex | Meta-analysis of 26 RCTs in fatty liver: lower ALT and AST; further studies on tissue findings are needed | Not recommended during pregnancy and breastfeeding; use under 18 not established (EU monograph) |
| Artichoke (leaf) | Bitter plant; contains cynarin, among other compounds | Two meta-analyses (7 and 8 RCTs): lower ALT and AST, especially in fatty liver | Not with certain liver and bile duct disorders or with allergy to the daisy family (EU assessment) |
| Dandelion (root) | Classic European bitter plant; classified as traditional use in the EU monograph | Traditional use; no study assessment here | Not with bile duct obstruction, gallstones, bile duct inflammation or liver disease; not recommended during pregnancy |
Milk thistle has the most studies behind it: a meta-analysis of 26 randomised trials in fatty liver (2,375 people) found lower ALT and AST values. For artichoke, two meta-analyses (7 and 8 trials) showed a similar picture, especially in fatty liver. How this relates to tissue findings is still being studied.
Anyone taking medicines or living with a liver disease should discuss herbal products with a doctor or pharmacist beforehand. For children, the notes for each plant apply.
Leber essentia: five plants, complemented by choline
Anyone who wants to combine the European plant tradition with the nutrient choline in one capsule will find Leber essentia at Natura Nova. The capsule combines milk thistle, artichoke, dandelion, peppermint and yarrow in a 492 mg plant complex, complemented by choline. The milk thistle extract is standardised to 80% silymarin, the artichoke extract to 2.5% cynarin. The formula was developed by Natura Nova and is manufactured in Switzerland to GMP standards; the capsule shell is vegan.
Conclusion: everyday habits first, plants as a traditional addition
What has been shown is that alcohol-free days, regular exercise and a balanced diet are the most important levers for fatty liver and liver strain. For coffee there are consistent signals from observational studies. Choline is a nutrient whose requirement is not the same for everyone. For milk thistle and artichoke, meta-analyses point to lower liver values; further studies will clarify which amounts and combinations make sense. Abnormal liver values belong in the family doctor's practice in any case.
This article provides general information about the liver, nutrition and plant compounds and does not replace medical advice, diagnosis or treatment. If you have health complaints, please consult a doctor or pharmacist.
Sources
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- Swiss Federal Commission for Alcohol-Related Issues: recommendations on low-risk alcohol consumption (2018), as reported by swissinfo. swissinfo.ch
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