Could our gut microbiota mediate the impact of bariatric surgery on severe obesity? A new cross-sectional study has found that interactions between the gut microbiota and bile acids metabolism may partially mediate the success of bariatric surgery in the medium term.

Genetic predisposition alone cannot fully explain the current rise of food sensitivities, like celiac disease. Scientists have characterized the bacterial enzyme elastase involved in driving immune activation and worsening reactions to gluten in genetically susceptible hosts.