The purpose of the present invention is to provide a probiotic(s) which can activate an aromatic hydrocarbon receptor (AhR) and can consequently prevent inflammatory damage in the digestive tract. The present invention relates to； a probiotic(s) capable of activating an AhR； an anti-inflammatory agent comprising the probiotic(s)； an orally ingestible composition containing the anti-inflammatory agent； and a method for screening for the probiotic(s).
