Eating a lot of highly processed foods might lower the good bacteria in your gut, raise the bad ones that cause inflammation, and could lead to health problems like diabetes or heart disease.

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Evidence from Studies

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The Detrimental Impact of Ultra-Processed Foods on the Human Gut Microbiome and Gut Barrier

Narrative Review

2025 Feb 28

The study looks at how eating ultra-processed foods affects gut bacteria and finds it reduces good bacteria and increases bad ones, just like the claim says, so it supports the claim.

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According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

The Detrimental Impact of Ultra-Processed Foods on the Human Gut Microbiome and Gut Barrier

Score: 1

DOI: 10.3390/nu17050859

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