The increase in food allergy prevalence in recent years suggests that environmental factors, such as diet and intestinal microbiota, play contributory roles. In this issue of the JCI, Bao et al. compared twins that differed with respect to food allergies. The researchers analyzed sequences from microbe ribosomal RNA and profiled microbe metabolites, identifying health-associated microbes at the species level. In addition to revealing microbes from the Clostridia class enriched in healthy twins, the authors identified two commensal species (Phascolarctobacterium faecium and Ruminococcus bromii) related to the healthy fecal metabolome. This study advances the goal for next-generation probiotic therapies that effectively treat or prevent food allergy.


M. Cecilia Berin


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