A new study suggests a compound produced by gut bacteria when they ferment dietary fiber may influence how immune cells develop, according to a report published July 15, 2026, by mindbodygreen. The study, cited by the publication and posted to ScienceDirect, focused on butyrate and its effects on dendritic cells, researchers said.
The findings were based on laboratory experiments conducted in cells and mice, the report stated. The results do not demonstrate an immediate immune boost in humans from eating more fiber, according to the report.
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