🦠 Beneficial Probiotic · Butyrate Producer
Roseburia hominis: Your Gut's Butyrate Powerhouse
R. hominis is one of the most important butyrate producers in the human gut. Butyrate fuels your colon cells, seals the gut barrier, and keeps inflammation low. Low levels are found in IBD, colon cancer, and type 2 diabetes.
✓ Beneficial probiotic
🧬 Detectable by PCR stool test
🏥 No referral needed
Butyrate
primary fuel for
your colon cells
your colon cells
Medically Reviewed
Dr. Samantha Naidoo
MB ChB, FCP (SA) · Medical Director, Epicentre Laboratories
Last reviewed: 19 March 2026
At a glance
Why does R. hominis matter?
Butyrate
primary fuel source for colon cells
Colon cell survival
🔥
potent anti-inflammatory via NF-kB suppression
Inflammation controller
↓ Low
in IBD, colon cancer, and type 2 diabetes
Multiple disease links
🛡️
protects against colorectal cancer
Butyrate shields colon DNA
PCR
detectable in all Epicentre gut tests
Walk-in or home kit
Could Your R. hominis Levels Be Low?
6 quick questions. Not a diagnosis, but it may help you decide whether testing is worthwhile.
How it works
What does R. hominis actually do in your gut?
🧬
Produces butyrate
The primary fuel for colonocytes (colon lining cells). Without butyrate, these cells weaken, the barrier breaks down, and inflammation follows.
🔥
Suppresses inflammation
Butyrate inhibits NF-kB, the master switch of inflammatory pathways. This provides measurable, systemic anti-inflammatory effects.
🛡️
Protects against colon cancer
Butyrate induces apoptosis (programmed death) in damaged colon cells, preventing them from becoming cancerous. It also supports DNA repair.
🧠
Supports gut-brain communication
Butyrate modulates neurotransmitter production and vagus nerve signalling, linking R. hominis to mood and cognitive function.
Warning signs
What happens when R. hominis levels are low?
Chronic bloating and excess gas
Abdominal pain, especially in the lower gut
Alternating diarrhoea and constipation
Mucus in stools
Urgency or incomplete evacuation
Butyrate from R. hominis doesn't just stay in the gut. It enters the bloodstream and influences inflammation, metabolism, and brain function throughout the body.
Persistent fatigue and brain fog
Systemic inflammation (joint pain, skin issues)
Low mood or anxiety
Weakened immune responses
Worsening metabolic markers
Low R. hominis is not a disease in itself, but it is consistently found in people with these conditions.
Crohn's disease: significantly reduced R. hominis and butyrate levels
Ulcerative colitis: butyrate depletion linked to flare severity
Colorectal cancer: butyrate protects colon DNA and induces apoptosis in damaged cells
Type 2 diabetes: low butyrate linked to insulin resistance and metabolic inflammation
IBS: reduced butyrate worsens gut motility and pain signalling
"
"When R. hominis is low on a gut test, I know butyrate production is compromised. That single finding tells me the patient's colon cells are underfuelled, their barrier is weakening, and inflammation is likely rising. It is one of the most actionable results we report."Dr. Samantha Naidoo, MB ChB, FCP (SA), Medical Director, Epicentre
What happens over time
The progression of low R. hominis
1
Trigger: low-fibre diet, antibiotics, or stress
R. hominis feeds on dietary fibre. Without it, populations collapse. Antibiotics and chronic stress compound the decline.
2
Butyrate production falls
Colon cells lose their primary fuel source. The gut lining begins to thin and weaken.
3
Gut barrier breaks down
Without butyrate maintaining tight junctions, toxins cross into the bloodstream. Low-grade inflammation begins.
4
Inflammation and disease risk rise
NF-kB activation drives systemic inflammation. Colon cancer risk increases. IBD flare-ups become more likely.
5
Severe dysbiosis
The fibre-depleted, inflamed gut cannot support R. hominis recovery without dietary intervention and potentially supplementation.
The good news: R. hominis is an obligate anaerobe (like F. prausnitzii), so it cannot be taken as a standard supplement. The most effective approach is to feed it with dietary fibre: oats, legumes, whole grains, and resistant starch. Results show within 4 to 8 weeks.
Take action
How to boost your R. hominis levels
High-fibre foods
Oats, legumes, whole grains, bananas, and resistant starch (cooled potatoes, cooled rice) are the primary fuel for R. hominis.
Resistant starch
Cooked-and-cooled potatoes and rice are particularly effective at boosting butyrate-producing bacteria.
Fermented foods
Support the broader ecosystem that R. hominis depends on.
Cut refined carbs
White bread, pasta, and sugar starve R. hominis while feeding competitors.
Diverse vegetables
Each vegetable provides different fibres. Aim for variety, not just volume.
Manage stress
Cortisol disrupts gut motility and microbial balance. Exercise and rest support R. hominis.
Testing
Test your R. hominis levels at Epicentre
All three Epicentre gut packages include R. hominis quantification. No referral needed. Walk in or test at home.
Gut Essentials
✓ Includes R. hominis
17 probiotic species mapped and quantified.
R1,995
~R499/mo with Payflex · 5% student discount
Complete Gut Profile
✓ Includes R. hominis + 44 more targets
Full picture: probiotics, pathogens, parasites, fungi, H. pylori.
R4,850
~R1,213/mo with Payflex · 5% student discount
Gut Deep Dive
✓ Includes R. hominis + disease associations
Everything in the Complete Profile plus disease association analysis.
R5,620
~R1,405/mo with Payflex · 5% student discount
Common questions
Frequently asked questions about R. hominis
Can I take R. hominis as a supplement?
Not directly. R. hominis is an obligate anaerobe, meaning it dies in oxygen and cannot survive as a standard supplement. The most effective approach is to feed the R. hominis already in your gut with dietary fibre, especially resistant starch, oats, and legumes.
What foods contain or support R. hominis?
High-fibre foods are essential: oats, legumes, whole grains, vegetables, bananas, and resistant starch from cooled potatoes and rice. These are the primary fuel for R. hominis and other butyrate producers.
How long does it take to restore R. hominis levels?
With dietary changes and supplementation (where applicable), most people see measurable improvements within 4 to 8 weeks. A follow-up gut test confirms progress.
Do I need a doctor's referral for gut testing?
No. Walk into any Epicentre branch in Durban (Hillcrest), Cape Town (Observatory), or Johannesburg (Parktown North). Or order a home stool collection kit delivered to your door in discreet packaging with prepaid return.
How much does a gut test cost?
Gut Essentials (17 probiotic targets): R1,995. Complete Gut Profile (45 targets): R4,850. Gut Deep Dive (45 targets + disease associations): R5,620. All prices include VAT. Payflex instalments available. Students get 5% off.
Find Out Where Your R. hominis Stands
Explore other gut organisms
Akkermansia muciniphila
B. bifidum
B. breve
B. lactis
B. longum
F. prausnitzii
L. acidophilus
L. gasseri
L. rhamnosus
L. plantarum
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