Akkermansia Benefits, Supplements & Science: The 2026 Expert Guide You Need to Read

Akkermansia Muciniphila: What It Does, Normal Levels, and 4 Ways to Increase It

Quick answer

Akkermansia muciniphila is a gut bacteria that lives inside the mucus layer lining your intestine, where it feeds on mucin (a protein and the primary fuel source of mucus) and stimulates your gut to produce more. It typically makes up 1–5% of the bacteria in a healthy stool sample. Higher levels are associated with a stronger gut barrier and better metabolic health; lower levels are consistently observed in inflammatory bowel disease, obesity and type 2 diabetes. You can support it through polyphenol-rich foods, fermentable fibre and plant diversity — though more is not automatically better.

Key takeaways

• What it is: a mucin-degrading bacterium of the phylum Verrucomicrobia, first isolated in 2004
• Normal range: roughly 1–5% of stool bacteria, though reference ranges vary by test provider
• Why it matters: it strengthens the mucus layer, tightens junctions between gut cells and calms local immune activity
• When it’s low: associated with IBD, obesity, type 2 diabetes and metabolic dysfunction
• How to raise it: polyphenols, fermentable fibre (inulin), plant diversity; avoid indefinite restriction
• The caveat: most mechanistic evidence is from mice, and the largest human supplement trial included just 32 participants

If you have had an Ultimate Gut Health Test, you may have seen Akkermansia muciniphila on your results and wondered whether your level was a good thing or a cause for concern. We know that living with long-term digestive symptoms is exhausting, especially when you have tried a lot of things already. Understanding what individual bacteria actually do is a useful step towards making sense of your own results.

Here is what the research currently shows.

What is Akkermansia muciniphila?

Akkermansia muciniphila is a gut bacterium belonging to the phylum Verrucomicrobia. It typically accounts for 1–5% of the bacteria found in a stool sample in healthy adults, making it one of the most abundant single species in the human colon (Macchione et al, 2019).

It is unusual in two ways. First, it is one of the very few gut bacteria whose primary food source is not dietary — it eats your own mucus. Second, it is one of an even smaller number of individual species that researchers treat as a standalone marker of gut health, rather than as one entry in a long species list.

The name is pronounced ak-er-MAN-see-uh mew-sin-IF-ill-uh. It is named after the Dutch microbiologist Antoon Akkermans, and muciniphila means “mucin-loving”.

Where does Akkermansia muciniphila live in the gut?

Akkermansia muciniphila lives in the mucus layer that coats the intestinal wall, not in the open channel where food passes through. This location is what sets it apart from most other gut bacteria, which sit in the lumen (Liu et al., 2022).

That mucus layer is made of proteins called mucins, and Akkermansia feeds on them. At first glance this sounds unhelpful, as though the bacterium is eating away at your protective barrier. The picture is more interesting than that:

1. It releases short-chain fatty acids. As Akkermansia breaks mucin down, it produces acetate and propionate — fuels that other beneficial bacteria and your own gut cells can use for energy.
2. It prompts more mucus production. The process stimulates the goblet cells in your gut lining to produce more mucin, keeping the layer turning over and renewing itself (Liu et al., 2022).

In other words, this is a working relationship rather than a one-way loss. The mucus layer is not a finite resource being depleted — it is a living tissue that renews faster when it is grazed.

How does Akkermansia support the gut barrier?

Akkermansia muciniphila supports the gut barrier in three distinct ways: it increases mucus secretion, it improves tight junction integrity between gut cells, and it dampens inflammatory signalling in the gut wall (Shaheen et al. 2025).

To understand why that matters, it helps to know how the barrier is built. Your intestinal lining is a single cell layer thick. The mucus sits on top, the epithelial cells sit beneath it, and tight junction proteins act as the seals between those cells. A weakness at any one of these levels compromises the whole structure.

Akkermansia also appears to communicate directly with the immune system through a specific outer membrane protein called Amuc_1100, which survives pasteurisation and signals through the TLR2 receptor. This is thought to partly explain why its effects reach beyond the gut itself (Mruk-Mazurkiewicz et al., 2024).

This is why so many researchers describe Akkermansia as a marker of gut health rather than simply another resident species. When barrier function is compromised, this bacterium is often found in lower numbers.

What does low Akkermansia mean?

Lower levels of Akkermansia muciniphila have been observed alongside a range of conditions, including inflammatory bowel disease, obesity and type 2 diabetes (Macchione et al, 2019). A low result is an association, not a diagnosis — but it is a signal worth interpreting alongside your symptoms.

What the human evidence shows:

Two limitations apply to this research. First, the Depommier supplement study involved only 32 people who completed it, so the findings are exploratory rather than settled. Second, a great deal of the wider mechanistic research has been carried out in mice, and animal findings do not always translate to people.

Is more Akkermansia always better?

No. Akkermansia muciniphila is best understood as a marker that behaves well within a range, not a score to maximise.

Two reasons for caution:

• Fibre scarcity drives it up for the wrong reasons. Akkermansia thrives on mucin. In a gut where fermentable fibre is scarce, mucin becomes one of the few food sources available, and mucin-degrading bacteria expand while the protective mucus layer thins. This was demonstrated in gnotobiotic mice by Desai et al. (Cell, 2016). A high reading on a very low-fibre diet may not mean what it appears to mean.
• Elevated levels appear in some neurological conditions. Higher Akkermansia abundance has been reported in people with multiple sclerosis and Parkinson’s disease, though whether this is cause, consequence or coincidence remains unresolved.

Context matters, which is exactly why test results are best interpreted alongside your symptoms and your history rather than on their own.

How do you increase Akkermansia naturally?

Four dietary levers have human evidence behind them: polyphenols, fermentable fibre, plant diversity, and avoiding prolonged restriction.

Source for all four: Verhoog et al., 2019; plant diversity association from Dao et al., 2016.

Polyphenols

Several human trials have reported increases in Akkermansia abundance following polyphenol supplementation, with pomegranate extract having the strongest supporting data. Responses vary a good deal from person to person.

Fermentable fibre

Fermentable fibres such as inulin have been associated with higher Akkermansia levels in human trials. If your gut is sensitive, increase these slowly — a sudden jump in fermentable fibre often produces more wind and bloating before it produces any benefit.

Restrictive diets

A low FODMAP diet was associated with a reduction in Akkermansia in the Verhoog systematic review. That does not mean low FODMAP eating has no place, because it can be genuinely useful in the short term for symptom management. It does mean that staying on it indefinitely may have a cost to your microbiome, which is why the reintroduction phase matters so much.

Plant diversity

Akkermansia tends to appear in the company of other bacteria linked to good health. A varied plant intake supports the wider community rather than one species in isolation.

What else influences your levels

• Metformin. One of the best-documented drivers of increased Akkermansia, and thought to be part of how the drug exerts its metabolic effects.
• Antibiotics. Repeated courses can substantially reduce abundance, and recovery is not always complete.
• Sleep, movement and stress. Each has been independently linked to gut barrier function, though direct evidence for effects on Akkermansia specifically is limited.

Be realistic about how much any single food will shift a single species. Microbiome composition responds to your overall pattern of eating over weeks and months, not to one ingredient added to an otherwise unchanged diet.

Can you take an Akkermansia supplement in the UK?

Yes — pasteurised Akkermansia muciniphila has been assessed as a novel food and is available in supplement form. The regulatory picture is worth understanding, because it differs from an ordinary probiotic.

• European Union: pasteurised A. muciniphila was authorised as a novel food in February 2022, for use in food supplements and foods for special medical purposes.
• Great Britain: the Food Standards Agency and Food Standards Scotland completed their safety assessment in September 2024, concluding that pasteurised A. muciniphila is safe at up to 4 × 10¹⁰ cells per day for the general population aged 12 and over.

Our recommended product is Renew Gut Thrive. And to feed keystone species like Akkermansia we recommend MegaPre.

Two points people often miss:

1. The authorised product is pasteurised, not live. Counterintuitively, the heat-killed preparation performed at least as well as the live one in the Depommier trial. The active component is thought to be the surface protein Amuc_1100, which survives pasteurisation.
2. These are food supplements, not licensed medicines. No Akkermansia product is licensed to treat, prevent or cure any condition, and none should be presented that way.

The human efficacy evidence remains limited to small, short studies. Supplementation is a reasonable thing to discuss with a practitioner; it is not a substitute for the dietary pattern that supports the bacteria you already carry.

Frequently asked questions

What is a normal Akkermansia level? Roughly 1–5% of stool bacteria in healthy adults. Reference ranges vary between test providers, so interpret your result against the range printed on your own report rather than a general figure.

Is Akkermansia muciniphila good or bad? Generally beneficial. Lower levels are associated with IBD, obesity and type 2 diabetes. However, higher is not automatically better — elevated levels can reflect a low-fibre diet driving mucin degradation.

How long does it take to change Akkermansia levels? Dietary intervention studies typically run 4 to 12 weeks before measuring change. Microbiome composition responds to sustained patterns of eating rather than short bursts, so think in months rather than days.

Does a low FODMAP diet reduce Akkermansia? Yes. A 2019 systematic review associated low FODMAP diets with reduced Akkermansia abundance — one reason the reintroduction phase should not be skipped.

Which tests measure Akkermansia? Shotgun metagenomic and 16S rRNA stool sequencing tests both report Akkermansia, usually as a relative percentage. Standard NHS stool tests do not.

Can you get Akkermansia from food directly? No. Akkermansia muciniphila is not present in fermented foods. Food influences the population you already carry rather than introducing new organisms.

Where to go from here

Akkermansia muciniphila is one useful signal among many. On its own, a single number cannot tell you why your symptoms started or what to do next. Interpreted alongside the rest of your microbiome results, your symptom history and your diet, it becomes far more informative.

If you have been on a restrictive diet for a long time, or you have had repeated courses of antibiotics, your starting point may be different from someone who has not. That is not a reason for discouragement. It simply means the sequence matters: settling symptoms enough to widen your diet often has to come before the diet can do its work.

That is the thinking behind our Ultimate Gut Plan, which combines advanced testing with a practitioner review of your results and symptoms, a personalised food, supplement and lifestyle plan, and a recorded video explaining what your results actually mean for you. If your symptoms point more towards bloating, wind and distension after eating, our SIBO Plan may be the better starting point.

You have most likely been managing this for a long time. Getting a clearer picture of what is happening in your gut is a reasonable place to begin.

References

1. Macchione et al., (2019) Akkermansia muciniphila: key player in metabolic and gastrointestinal disorders. Eur Rev Med Pharmacol Sci. PMID: 31599433
2. Liu et al., (2022) Recent findings in Akkermansia muciniphila-regulated metabolism and its role in intestinal diseases. PMID: 36113229
3. Shaheen et al. (2025) Akkermansia muciniphila: A key player in gut microbiota-based disease modulation. PMID: 40845731
4. Mruk-Mazurkiewicz et al., (2024) Insights into the Mechanisms of Action of Akkermansia muciniphila in the Treatment of Non-Communicable Diseases. PMID: 38892628
5. Dao MC, et al. Akkermansia muciniphila and improved metabolic health during a dietary intervention in obesity. Gut. 2016;65(3):426–436. PMID: 26100928
6. Depommier C, et al. Supplementation with Akkermansia muciniphila in overweight and obese human volunteers: a proof-of-concept exploratory study. Nat Med. 2019;25(7):1096–1103. PMID: 31263284
7. Everard A, et al. Cross-talk between Akkermansia muciniphila and intestinal epithelium controls diet-induced obesity. PNAS. 2013;110(22):9066–9071. PMID: 23671105
8. Verhoog S, et al. Dietary Factors and Modulation of Bacteria Strains of Akkermansia muciniphila and Faecalibacterium prausnitzii: A Systematic Review. Nutrients. 2019;11(7):1565.
9. Desai MS, et al. A dietary fiber-deprived gut microbiota degrades the colonic mucus barrier and enhances pathogen susceptibility. Cell. 2016;167(5):1339–1353. PMID: 27863247
10. Food Standards Agency & Food Standards Scotland. Safety Assessment on Pasteurised Akkermansia muciniphila Used as a Food Supplement (RP1468). 2024. DOI: 10.46756/001c.125531
11. Commission Implementing Regulation (EU) 2022/168, 8 February 2022.
12. Advisory Committee for Novel Foods and Processes, ACNFP/167/04, 2024