Abstract: The present invention provides a bile acid absorbent/adsorbent comprising as active ingredients a lactic acid bacterium having a property of incorporating bile acids into the cell in the presence of an oligosaccharide and of no releasing them out of the cells, and the oligosaccharide. The lactic acid bacterium includes Lactobacillus salivarius ssp. salicinius strain JCM1044, Bifidobacterium breve strain JCM1192, etc. The oligosaccharide includes raffinose, kestose, nystose, trehalose, etc. The bile acid adsorbent is in a form of oral formulation, or eatables and drinkables, etc. The bile acid absorbent/adsorbent can be utilized as cholesterol lowering agents or colorectal cancer inhibitors.