Platycodin D (PD) is an oleanane-type triterpenoid saponin and one of the primary active substances isolated from the root of the Platycodon herb. Investigators from First Affiliated Hospital of Jinan University and affiliated organizations studied the effects of PD on high-fat diet-induced obesity and nonalcoholic fatty liver disease (now called metabolic dysfunction-associated steatotic liver disease or MASLD).