The Claim

Gastric acidity suppresses horizontal gene transfer of antibiotic resistance genes by lysing bacteria and reducing DNA availability, and this suppression diminishes as gastric pH increases toward neutral, leading to an increased risk of antibiotic resistance gene spread.

Source: Gastric Acidity and Microbial Escape Routes: Mechanisms Used by the Intestinal Microbiota and Transient Pathogens

What the research says

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How it works
1 study reviewed
In plain English

Higher stomach acid reduces the transfer of antibiotic resistance genes between bacteria by killing bacteria and breaking down their DNA. When stomach acid is weaker, more resistance genes are transferred.

See the scientific wording

Gastric acidity suppresses horizontal gene transfer of antibiotic resistance genes by lysing bacteria and reducing DNA availability, but this protective effect diminishes as gastric pH rises toward neutral, increasing the risk of resistance gene spread.

Why this might work

Strong stomach acid kills bacteria and breaks down their DNA, preventing antibiotic resistance genes from being passed between bacteria. When stomach acid weakens, more bacteria survive and reach the intestines, where they exchange DNA and spread resistance genes.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: Gastric Acidity and Microbial Escape Routes: Mechanisms Used by the Intestinal Microbiota and Transient Pathogens

    Stomach acid kills most bacteria and their DNA, stopping antibiotic resistance genes from spreading. When the stomach becomes less acidic, more bacteria survive and can pass into the intestines, where they can share resistance genes with each other.

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

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