Eating fermented dairy products like yogurt does not lead to better changes in gut bacteria than eating non-fermented dairy products like regular milk in people.
See the scientific wording
Fermented dairy consumption does not result in greater improvements in gut microbiome markers compared to non-fermented dairy consumption in humans.
Very strong evidence
Randomized trialsOne good-quality study supports this claim.
What the research says
1 study reviewedSupporting (1)
Randomized Controlled TrialHuman2024
The study found that eating yogurt with dead bacteria or sour milk (no bacteria at all) changed gut chemicals just as much as eating regular yogurt with live bacteria. So, the live bacteria in fermented dairy don’t seem to make a big difference for these gut markers.
Contradicting (0)
No contradicting studies found yet
That doesn't mean it's settled — it just means no study has tested the opposite.
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Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting study
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