It has been reported that Information on OLL2712 lactic acid bacteria (called “OLL2712 lactic acid bacteria” below) have the function of reducing abdominal fat (total abdominal fat) as well as HbA1c (glycated hemoglobin) in overweight people. This section explains the mechanism by which OLL2712 lactic acid bacteria reduces abdominal fat and acts on HbA1c - an important indicator used in blood sugar regulation.