specific noo noo's causing you problems? let's check it out!
- May 12
- 2 min read

Let’s look at the specific gut microbes that are linked to Hashimoto’s, Rheumatoid Arthritis (RA), Lupus (SLE), and Psoriasis — both harmful strains that worsen these conditions, and beneficial strains that can help reduce symptoms.
🧫 GUT MICROBIOME & AUTOIMMUNE DISEASE LINKS
1. Hashimoto’s Thyroiditis
🚨 Harmful gut microbes (increased in Hashimoto’s):
Prevotella spp. – Promotes Th17 inflammation and disrupts mucosal tolerance
Klebsiella pneumoniae – Linked to cross-reactivity with thyroid tissue
Yersinia enterocolitica – Molecular mimicry potential (triggers thyroid antibodies)
Proteobacteria overgrowth – Linked with leaky gut and systemic inflammation
✅ Helpful microbes (often decreased):
Lactobacillus reuteri – Regulates thyroid axis and inflammation
Bifidobacterium longum – Supports mucosal immunity and Treg cells
Akkermansia muciniphila – Improves gut barrier and insulin sensitivity
Faecalibacterium prausnitzii – Produces butyrate; anti-inflammatory
2. Rheumatoid Arthritis (RA)
🚨 Harmful microbes (increased in RA):
Prevotella copri – Strongly linked to early RA onset; promotes immune dysregulation
Collinsella aerofaciens – Alters gut permeability and promotes IL-17
Eggerthella lenta – Increases inflammation and disease severity
Actinobacteria imbalance – Associated with pro-inflammatory T-cell activity
✅ Helpful microbes (often reduced):
Lactobacillus casei – Reduces joint inflammation
Bacteroides fragilis (non-toxigenic) – Promotes Treg development
Faecalibacterium prausnitzii – Suppresses TNF-α and IL-6
Roseburia spp. – Butyrate producer, supports gut lining
3. Lupus (Systemic Lupus Erythematosus – SLE)
🚨 Harmful microbes (increased in lupus):
Ruminococcus gnavus – Major lupus trigger; activates TLRs and flares
Lachnospiraceae imbalance – Increases intestinal permeability
Clostridium spp. (pathogenic types) – Disrupts immune signaling
Bacteroides dorei – Associated with autoantibody production
✅ Helpful microbes (often reduced):
Bifidobacterium bifidum – Modulates immune activity
Lactobacillus fermentum & plantarum – Supports Treg cells and gut barrier
Akkermansia muciniphila – Helps prevent flares by regulating mucus lining
Bacteroides vulgatus (at proper levels) – May balance gut immunity
4. Psoriasis (and Psoriatic Arthritis)
🚨 Harmful microbes (overgrown in psoriasis):
Escherichia coli (pathogenic strains) – Promotes gut-skin axis inflammation
Streptococcus spp. – Can trigger molecular mimicry (especially with guttate psoriasis)
Candida albicans (yeast) – Often overgrown; linked to flare severity
Firmicutes/Bacteroidetes imbalance – Common in gut dysbiosis of psoriasis patients
✅ Helpful microbes (deficient in psoriasis):
Lactobacillus salivarius – Helps reduce skin lesions
Bifidobacterium breve – Improves skin barrier and inflammation
Faecalibacterium prausnitzii – Major anti-inflammatory action via butyrate
Butyricicoccus pullicaecorum – Supports gut barrier and skin health
🧠 Summary Table
Autoimmune Condition | Harmful Microbes | Beneficial Microbes |
Hashimoto’s | Prevotella, Yersinia, Klebsiella | L. reuteri, B. longum, A. muciniphila |
RA | P. copri, Collinsella, Eggerthella | L. casei, F. prausnitzii, Roseburia |
Lupus | R. gnavus, Clostridia, B. dorei | B. bifidum, L. fermentum, Akkermansia |
Psoriasis | Candida, E. coli, Streptococcus | L. salivarius, B. breve, F. prausnitzii |
Crazy right!!!!! These guys need to go.
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