Microbial species living in a fruit fly gut interact with one another—and influence the insect’s health and longevity in the process.

A study of Danish adults reveals moderate changes in the abundance of multiple gut bacteria species, but the results might not be due to reduced gluten per se.

A case study of two patients with advanced cancer shows it might be possible to avoid a common and severe side effect of immunotherapy treatment.

As people move to the United States from Southeast Asia, the microbes in their digestive tracts begin to Westernize, possibly explaining high rates of obesity and other metabolic issues in these immigrant populations.

Glyphosate perturbs the balance of gut bacteria in honey bees and increases the insects’ susceptibility to lethal infection.

Experiments in mice and people find that probiotic supplements don’t consistently change the composition of the gut microbiome, and may have adverse effects after antibiotics.

Antibiotics boost men’s responses to the oral rotavirus vaccine.

A new study finds that more than 200 human-targeted, non-antibiotic drugs inhibit the growth of bacterial species that make up part of the human microbiome.

New findings suggest that promoting the growth of fiber-loving bacteria may help manage type 2 diabetes.