The Claim

Brazilian adults with Hashimoto thyroiditis exhibit a significant increase in gut Bacteroides species and a significant decrease in Bifidobacterium species compared to healthy Brazilian adults without Hashimoto thyroiditis.

Source: Detection of Alterations in the Gut Microbiota and Intestinal Permeability in Patients With Hashimoto Thyroiditis

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
44score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

In Brazilian adults, Hashimoto thyroiditis is associated with higher levels of Bacteroides bacteria and lower levels of Bifidobacterium bacteria in the gut compared to healthy individuals.

See the scientific wording

Brazilian adults with Hashimoto thyroiditis show a significant increase in gut Bacteroides species and a significant decrease in Bifidobacterium species compared to healthy controls, suggesting a distinct gut microbiota signature associated with the disease.

Why this might work

An imbalance in gut bacteria, with more Bacteroides and fewer Bifidobacterium, causes the gut lining to become leaky. This allows bacterial parts and food particles to escape into the bloodstream, which activates the immune system and leads to inflammation that targets the thyroid gland.

Supported mechanismbased on 1 study

What the research says

1 study
  1. Study: Detection of Alterations in the Gut Microbiota and Intestinal Permeability in Patients With Hashimoto Thyroiditis

    Scientists found that people with Hashimoto’s in Brazil have more Bacteroides and less Bifidobacterium gut bacteria than healthy people, which matches what the claim says.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.