After controlling for high levels of bacterial contamination in their lab and reagents, researchers detect microbial genetic material in plasma samples from healthy people and cancer patients.

A study of 19 postmenopausal women found that eating a bar of chocolate in the morning affected their bodies differently than eating it at night, but neither led to weight gain.

With multiple microbiota therapeutics in the pipeline for recurrent Clostridium difficile infection, clinicians foresee a shift in treatment options for the condition.

Cammie Lesser will discuss how she turns a probiotic into a drug-delivering machine, while Andrew Y. Koh will describe the connection between the gut microbiota and cancer immunotherapy efficacy.

Tiny doses of maternal poo mixed with breast milk and given to Cesarean-born infants makes their gut microbiota resemble those of babies born vaginally.

Research on hundreds of babies finds the delivery method is linked with a greater abundance of taxa more frequently seen in hospitals.

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

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.

Researchers seek to untangle the biological mechanisms linking resident microbes to our hearts—and to harness them therapeutically.

Research in mice and humans is beginning to establish a link between the composition of microbes in the gut and immune responses to tumor cells, but the mechanisms are not yet clear.

Molecules produced by resident bacteria and their hosts may signal immune cells to attack the body’s own tissues.

In a study of nearly 400 breastfeeding mothers, researchers find links between directly feeding the child and a more diverse microbiota, compared to milk from pumping.

Researchers find that it’s not just high-risk genes, but how children’s bodies respond to their own intestinal microbiota that relates to future diagnoses of type 1 diabetes.

Transposon mutagenesis give scientists a rare look at the most important interactions within microbial communities.

Using wild mice housed in laboratory conditions, researchers find that gut bacteria compositions change little from one generation to the next.

Acute bouts of diarrhea could have lasting effects on the microbiota and host immune system activation, a mouse study suggests.

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.

Including microbiome composition in predictions of whether a person is obese can significantly improve their accuracy, according to an analysis.

Hundreds of samples from microbes living in the gut, skin, mouth, and vagina add to the human microbiome “fingerprint.”