Physical activity, independent of diet, shifts the composition of bacteria in the intestines, spurring researchers to search for species that might provide benefits akin to working out.

In Niger, fewer kids die when health workers administer azithromycin routinely, perhaps because of a shift in the composition of gut microbes.

Studies point to the life-saving record of fecal transplants for patients infected with C. diff, despite a recent death. Doctors are now testing the procedure for other conditions.

Curbing the growth of harmful bacteria in mouse microbiomes reduces the animals’ incidence of inflammation-related colorectal cancer.

Neither the maternal microbiome nor housing conditions appear to permanently alter which microbes remain in the animals.

The lab animals had more natural microbiomes seeded by wild mice, unlike conventional models that are kept in sterile conditions.

The authors of a new study find no evidence for bacteria in the placenta, but others in the field question their interpretation of the data.

Boosting the levels of Akkermansia muciniphila in mouse guts slowed the progression of an ALS-like disease, while two other microbiome members were associated with more severe symptoms.

The Purdue University nutrition researcher delves into the details of how fat tissue affects tumors.