A study tracking 9,419 meals in 173 patients suggests cutting sugar intake before and during antibiotic treatment may help protect the gut microbiome, with lower sugar intake linked to less microbial diversity loss and mouse experiments suggesting a protective effect.

[u/Phylogenix]

https://www.nature.com/articles/s41586-026-11077-3

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[u/SelarDorr]

should be noted the human data is in people who are prepping for stem cell transplantation. probably most are cancer patients, so the results cant be directly generalized to genpop

however id imagine mechanistically similar phenomena in 'healthy' individuals.