A particular gut bacteria, Dialister, seemed to prevent participants from losing weight in a study done recently at The Mayo Clinic. In this very small but well-done study, researchers asked 26 patients to follow a volumetric diet (heavy on fruits, vegetables, and low energy density foods). Their gut bacteria was analyzed before and after the 3-month study. Participants with an abundance of a bacteria called Phascolarctobacterium were able to lose weight, while those with Dialister were not able to lose weight. The study of our microbiome’s contribution to weight management is a burgeoning field, and we’ll need to follow this closely. It’s tempting to want to find a company whose probiotics are heavy on Phascolarctobacterium, but don’t jump too soon as this certainly needs more research. Just stay tuned.