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183 Chemotherapy rewires gut bacteria to block metastasis

ScienceDaily
ScienceDaily 1 place · 01/23/2026 23:12 EDT

Chemotherapy’s gut damage turns out to have a surprising upside. By changing nutrient availability in the intestine, it alters gut bacteria and increases levels of a microbial molecule that travels to the bone marrow. This signal reshapes immune cell production, strengthening anti-cancer defenses and making metastatic sites harder for tumors to colonize. Patient data suggest this immune rewiring is linked to better survival.

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